Ichos

Reviewer at hxosplus
Fresh and exciting
Pros: + Neutral and balanced
+ Natural timbre and tonal accuracy
+ High quality bass
+ Excellent technical performance
+ Detail retrieval and insight
+ Impressive clarity and transparency
+ Expansive soundstage with excellent imaging
+ Two pad choices with different tunings
+ Suitable for both critical and casual listening
+ Easy to drive
+ Extremely comfortable
+ Exceptionally well made
+ Luxurious and classy looking
+ Premium cable with various options
+ High quality carrying case
+ Good price for a high-end headphone
Cons: - Not as warm and inviting as the Empyrean
- Traces of metallic artificiality on the treble
- A touch bright and not as smooth as the Empyrean
- Leaner and drier than the Empyrean
The Meze Audio Empyrean marked the brand's initial venture into the high-end audio market, featuring a planar magnetic headphone equipped with Rinaro’s Isodynamic Hybrid Array Driver, a pioneering technology at the time. The Empyrean achieved significant acclaim, solidifying Meze Audio's reputation as a manufacturer of premium headphones and paving the way for subsequent esteemed models such as the Elite and the Liric 2.

Now, Meze Audio has determined that the moment is ripe for the introduction of the second generation of the Empyrean.

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Meze Audio Empyrean II

The primary objective during the design of the Empyrean II was to improve the headphones' capacity to reproduce intricate details and attain a more neutral sound profile, while still maintaining the original model's "easy to listen" quality. This initiative was prompted by significant feedback from the community, which expressed a desire for a new Empyrean that offers enhanced clarity and detail retrieval.

Technical highlights

The Meze Audio Empyrean II continues to utilize Rinaro’s Isodynamic Hybrid Array Driver and a dual-shaped voice coil, albeit in a newer and refined iteration compared to its predecessor.

For those unfamiliar with these technologies, further information can be found here.

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Non Audio stuff

The Empyrean II closely resembles its predecessor, the Empyrean I, yet it incorporates subtle yet thoughtfully redesigned elements that set it apart and lend it a distinctive character. Meticulously crafted through CNC milling, the frame showcases a sophisticated matte black finish complemented by understated silver accents. The outer grills have a fresh design inspired by the striking and enduring patterns of art deco. The Empyrean II exudes an aura of understated luxury, embodying elegance akin to fine jewelry.

Constructed from high-quality aluminum alloy, genuine leather, and carbon fiber, these headphones represent some of the finest craftsmanship available. Meze Audio's dedication to detail and quality is unmatched, positioning them ahead of any competitor, regardless of price.

The Meze Audio Empyrean II is designed with meticulous attention to detail, ensuring that the owner feels a sense of satisfaction with their investment. In the event of any issues, every component of the headphones is replaceable, and Meze Audio provides exceptional after-sales support.

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Two types of ear-pads

The Empyrean II, akin to its predecessor, incorporates Rinaro’s Isomagnetic coupling technology, facilitating effortless ear-pad changes. This system employs the demagnetizing field produced by the driver to firmly hold the ear-pads in position while simultaneously redirecting the magnetic field back into the driver, thus improving overall efficiency.

The ear-pads are designed in an oval shape, providing ample space and depth to fully encompass the ear without any contact with the driver. The Empyrean II is supplied with two sets of ear-pads, each delivering distinct sound profiles, which will be explored further.

The Duo ear-pads are meticulously engineered to acoustically complement the Empyrean II and are not available for separate purchase. They are constructed from a carefully selected combination of high-quality leather and Alcantara, in contrast to the angled Alcantara pads, which are made entirely of Alcantara. Additionally, these pads are compatible with both the Elite and the original Empyrean models.

Wearing experience

The Empyrean has received widespread acclaim from both critics and users, being recognized as one of the most comfortable headphones ever produced, a reputation that extends to the Meze Audio Empyrean II. This headphone is emblematic of comfort, featuring a lightweight design that makes it perfect for prolonged listening experiences.

The headband design effectively reduces weight and pressure, allowing the headphones to conform easily to various head sizes. The adjustment mechanism operates smoothly, the clamping force is minimal, and the headphones remain silent during use or size modifications.

It is important to note the relatively low clamping force, which necessitates caution during vigorous head movements, as there is a possibility that the headphones may slip off.

The stock cable

The Empyrean faced criticism upon its initial release regarding the quality of its stock cable, which was deemed significantly inferior given the headphone's overall quality and price point. Consumers were required to invest additional funds to acquire one of the premium cables offered by Meze Audio.

In response to this feedback, Meze Audio has attentively addressed the concerns and has equipped the Empyrean II with a high-quality cable. Buyers now have the option to choose between two types of cables: a silver-plated PCUHD copper cable or a PCUHD pure copper cable.

Both cable options are available with 4-pin XLR and 6.35mm connectors in a length of 2.5 meters, as well as 4.4mm, 2.5mm, and 3.5mm connectors in a length of 1.3 meters. The braided cables are expertly crafted, featuring aluminum connectors. They are flexible, resistant to tangling, and produce minimal friction noise.

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Accessories

The headphones are accompanied by a cable and two sets of ear pads, all housed in a high-quality ABS plastic case featuring foam inserts and a leather handle. While this case may not possess the premium feel of the aluminum suitcase provided with the Empyrean, it offers a more compact and practical design.

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Power needs

The Empyrean II features an impedance rating of 32Ω and a sensitivity of 105dB SPL/mW, compared to the original model's 31.6Ω and 100dB. This indicates a slight increase in efficiency.

Designed for portability, the Empyrean II performs best when paired with high-quality sources, as it exhibits exceptional scalability and a revealing sound profile. Premium digital audio players, such as the iBasso DX320 and the FiiO M17, are highly recommended; however, the Meze Empyrean II also benefits from more powerful equipment.

For this evaluation, I utilized Meze Audio's silver-plated PCUHD copper cable alongside Lavricables Grand pure silver cable.

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Audio stuff

The text includes direct comparison notes with the Empyrean equipped with its original suede pads.

The Empyrean II exhibits two notably distinct sound profiles depending on the ear pads utilized. Initially, we will examine the angled Alcantara pads, which provide the most neutral frequency response.

When using these pads, the Meze Audio Empyrean II emerges as a more neutrally tuned and slightly brighter iteration of the Empyrean. The bass frequencies are somewhat subdued, featuring reduced mid-bass emphasis and a slightly less pronounced sub-bass extension. The mid-range is more balanced, while the treble is enhanced in relation to the original Empyrean.

This revised sound signature aligns more closely with the reference-neutral standard, positioning the Meze Empyrean II as an exceptional option for critical listening, all while preserving the musical and warm essence of the original model. Meze Audio has successfully created a more neutral variant of the Empyrean without compromising its celebrated musicality or introducing any clinical or sterile characteristics.

The newer version, aside from its tuning differences, exhibits remarkable clarity and definition that significantly exceeds that of its predecessor. The Meze Empyrean II excels in detail retrieval and insight, managing to avoid a dull or overly analytical sound. It possesses a distinctive ability to reveal intricate details while prioritizing the musical experience rather than merely showcasing technical prowess.

Furthermore, the Meze Audio Empyrean II demonstrates exceptional proficiency in positioning accuracy and the separation of various sound sources within the soundstage, clearly surpassing the original model. While the Empyrean may offer a slightly more holographic experience, the Empyrean II provides a broader and more expansive soundstage, characterized by improved airiness and outstanding ambient detail.

The discussion regarding frequency response highlights that the bass can extend to the lowest octave while maintaining a nearly neutral character, devoid of any notable coloration. The tonal precision of the low frequencies has significantly improved compared to the Empyrean, aligning more closely with the ideal reference. Additionally, the Duo pads can enhance the experience, making it more engaging and enjoyable.

In terms of technical performance, the low-end is exceptional; the bass is remarkably clear and well-defined, exhibiting no signs of mid-range bleeding. It is characterized by rapid response, tightness, and outstanding control, accompanied by excellent dynamic range and substantial physical impact. The low-end of the Empyrean II is not only technically proficient and textured but also sufficiently robust and full-bodied, though it does not possess the same level of weight as found in the Empyrean.

The mid-range frequencies are less pronounced and exhibit a more neutral tuning when compared to the Empyrean. While both headphones feature a subtle emphasis in the upper mid-range, the Empyrean II tends to highlight this region more prominently. The sound produced is neither sibilant nor fatiguing; however, some individuals may perceive it as brighter and potentially more persistent than their personal preferences would dictate.

The textures presented are weighty, yet they lack the thickness and lushness found in the Empyrean. The new model offers significantly enhanced resolution, along with improved articulation and clarity. The timbre remains natural and organic, enriched with vibrant harmonies, though it is not as saturated as that of the Empyrean.

The treble is prominently accentuated, imparting a more vibrant and dynamic quality to the Empyrean II, which exhibits greater brightness when contrasted with the Empyrean. The Meze Audio Empyrean II does not come across as sharp or tiring; however, it certainly possesses a more radiant character, featuring quicker transients and added brilliance in the treble range.

While the headphone maintains much of the original warmth, it is less forgiving and more revealing. The higher frequencies are sufficiently natural, though they exhibit a degree of artificiality, and the textures appear leaner compared to the Empyrean, with sound decay occurring at a relatively faster rate.

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The Duo ear-pads

The Duo ear-pads significantly enhance the low-frequency response, extending from the sub-bass to the lower mid-range, while also providing a slight reduction in treble levels. In this context, the sound profile of the Empyrean II closely resembles that of the Empyrean, resulting in a more enjoyable and engaging listening experience, particularly with modern music.

Nevertheless, the Duo pads do not compromise the remarkable technical capabilities and exceptional clarity of the Meze Audio Empyrean II, which continues to deliver a brighter and more energetic sound compared to its predecessor.

The Duo pads and the angled Alcantara pads each offer distinct and unique sound signatures, thereby contributing considerable versatility to the Empyrean II, making it well-suited for both analytical and leisurely listening sessions.

Comparison with the Empyrean

The auditory distinctions between the two headphone models have been thoroughly examined in the preceding section. The remaining inquiry pertains to whether the Empyrean II surpasses the original Empyrean. The answer to this question is not straightforward, as it largely hinges on individual musical tastes and sound preferences.

For those seeking a more neutral and technically refined iteration of the Empyrean, the Meze Audio Empyrean II represents a significant enhancement that is likely to elicit considerable satisfaction.

However, it is understandable that some users may not resonate with the new tuning approach and the pronounced technical characteristics of the Empyrean II, thereby favoring the original model.

Additionally, one might contemplate utilizing the Empyrean with the angled Alcantara pads, which can impart a more neutral sound profile, thereby narrowing the disparity between the two headphones. Nevertheless, the Empyrean II remains the more technically sophisticated and transparent option of the two.

Regrettably, the original Empyrean has been discontinued, and the only avenues to acquire one are through remaining stock or the second-hand market.

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Conclusion

The Meze Audio Empyrean II represents a remarkable advancement in headphone technology that transcends mere comparison with its predecessor. This model not only offers a more neutral tuning and enhanced technical performance than the original but also stands out as one of the most balanced and transparent headphones available today.

Its sound profile adeptly navigates the spectrum between reference quality and pure enjoyment, making it an exemplary choice for both discerning audiophiles and casual listeners, particularly when considering the inclusion of two distinct ear-pad options.

Beyond its impressive audio performance, the Empyrean II excels in build quality, with a design that is both aesthetically pleasing and exceptionally comfortable.

As a flagship offering, the Meze Audio Empyrean II merges outstanding sonic attributes with superior craftsmanship, all at a price point that can be regarded as a bargain in the context of the current high-end audio market.

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The Empyrean II was kindly loaned to me for the purpose of this review. I don't use affiliate links. The price of the Empyrean II is $2999 and you can buy it from Meze Audio.

Disclaimer: For various Google indexing reasons, most parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos

Reviewer at hxosplus
Excellent entry-level earphones
Pros: + Balanced tuning with tasty bass
+ Competitive technicalities
+ Natural timbre
+ Musical and engaging
+ Mid-range presence and polite treble
+ Good imaging
+ Two tuning options
+ Very well made
+ Beautiful looking and very comfortable
+ High quality cable and nice carrying case
+ Affordable with great value for money
Cons: - Not that resolving or refined
- The treble lacks in technicalities
- Narrow and flat soundstage
- One set of ear-tips
- Not that lightweight for the size
KEFINE

KEFINE is an emerging brand founded by a group of audio enthusiasts driven by their passion for the hobby. With prior experience in earphone manufacturing, they united to realize their vision of superior sound quality. The KEFINE brand is dedicated to producing earphones that deliver an outstanding price-to-performance ratio while ensuring high-quality sound craftsmanship. To date, they have developed three models: the Klanar, the Delci, and their newest addition, the Klean.

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KEFINE Klean

The KEFINE Klean is a budget-friendly, entry-level earphone equipped with a 10mm dynamic driver that incorporates a diaphragm constructed from diamond-like carbon (DLC). This sophisticated material is recognized for its exceptional clarity, detail, and extended high-frequency response.

Additionally, the Klean is designed with a dual-cavity driver architecture and interchangeable nozzles to accommodate individual sound preferences. The silver nozzle provides a warm and smooth auditory experience, whereas the black nozzle produces a higher resolution with brighter and more transparent sound. The threaded design facilitates quick and easy nozzle changes.

Non Audio stuff

The ear-shells are crafted using an alloy casting technique and subsequently polished to achieve a sleek black finish. The faceplates are secured to the main body with screws, a method that mitigates the risk of damage from adhesive failure or external forces, thereby enhancing the product's durability. Similar to the Delci, the Klean is exceptionally well-constructed, exceeding all expectations given its price point.

While the design of the KEFINE Klean may appear simple and minimalistic, it possesses a level of sophistication and appeal. Although the ear-shells may not be particularly lightweight for their size, they are compact and feature a contoured design that conforms to the natural shape of the human ear. The Klean offers a high degree of comfort and a discreet appearance, seamlessly fitting into the ears to provide a stable and stress-free experience with effective noise attenuation.

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Cable and accessories

KEFINE provides their earphones with premium cables, and the Klean model is no exception. It features a 2-pin detachable cable constructed from high-purity silver-plated copper wires, designed in a two-core braided format. The cable is equipped with a 3.5mm aluminum plug, ensuring it is both soft and lightweight, while minimizing microphonic noise and preventing tangling. This high-quality cable offers excellent handling and aesthetically complements the Klean, making it a worthwhile investment for the price.

The package comprises three sets of silicone ear tips, a cable, two sets of tuning nozzles, and an attractive carrying case featuring a side zipper.

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Power needs

Entry-level earphones are designed to be easily driven, as the majority of consumers will utilize them through the 3.5mm jack of their smartphones or a basic USB DAC dongle. The KEFINE Klean features an impedance of 32Ω and a sensitivity of 107dB, making it particularly easy to drive. This allows for an enjoyable listening experience with portable USB DACs such as the FiiO JA11 or the Kiwi Ears Allegro Mini.

Audio stuff

Let's start with the silver nozzles.

Consumers shopping in the $40-50 price range are likely to seek earphones primarily for casual listening rather than for critical audiophile use.

Recognizing this, the seasoned KEFINE team opted for a sound profile that promotes smooth and enjoyable listening experiences, catering to the preferences of the majority.

In a departure from typical practices, they maintained a balanced tuning that avoids extreme frequency responses. The Klean features a gentle bass emphasis with commendable sub-bass extension, present mids, and a smooth yet clear treble.

The overall sound signature strikes a balance, neither overly V-shaped nor U-shaped, while emphasizing the significance of the mid-range without excessive focus on either the bass or treble.

The KEFINE Klean is a versatile earphone that performs admirably across various music genres, appealing to a broad audience, with the exception of those seeking a specialized or highly technical audio experience.

The treble response of the Klean is characterized by a smooth and unobtrusive quality, which some may perceive as lacking vibrancy; however, it remains impressively clear and well-articulated. It strikes a balance between lightness and sparkle, preventing a dark tonal character while avoiding excessive sharpness or brightness. The timbre is natural enough, though it may exhibit a slight metallic quality, particularly with higher-pitched orchestral instruments.

In terms of detail retrieval and overall resolution, the Klean performs satisfactorily within its category, though it does not offer significant depth or exceptional analytical capabilities. While it may not be the most technically sophisticated option, it makes up for this with its inherently musical character.

The mid-range exhibits a well-balanced tuning, characterized by a lack of significant recession or excessive brilliance in the upper mid-range. This results in a neutral sound profile that is pleasant to the ear, minimizing the risk of listening fatigue.

The clarity and articulation are very good, free from the masking effects often associated with mid-bass bloat. With its vibrant and harmonious tonal variety, the Klean effectively engages the listener with their preferred music.

The thoughtfully accentuated bass enhances the listening experience across various musical genres, remaining sufficiently in tune for more discerning listening, provided one is aware of its limitations.

Its technical performance is competitive; the bass is quick, well-defined, and controlled, featuring moderately rich textures that are not overly lean. While the Klean may not deliver extreme punchiness or impact, it still offers a satisfying dynamic range.

The soundstage is somewhat narrow and lacks significant depth; however, it provides adequate space and reasonable imaging, allowing the listener to perceive the intricacies of the music without descending into a messy sound experience.

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With the black nozzles

The black tips enhance the upper mid-range and treble frequencies, while subtly reducing the bass, resulting in a more vibrant sound profile for the Klean. This configuration allows the Klean to produce a clearer and more brilliant sound without becoming harsh or piercing. Additionally, the bass achieves greater tonal precision while maintaining its rich and dynamic quality.

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Comparison with the KEFINE Delci

The KEFINE Delci is priced at $10 above the Klean, leading some to question whether the additional expenditure for the Delci is justified.

The response to this inquiry is straightforward: the Delci offers a warmer and more relaxed sound profile compared to the Klean, featuring a treble that is less airy and sparkly. However, there are additional qualities that warrant the extra $10 for those who prefer this tonal balance. The Delci provides greater resolution, delivering a more expansive sound than its counterpart, along with a wider soundstage and a bass response that is both punchier and more technically refined.

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Conclusion

The Klean serves as further evidence that KEFINE possesses a remarkable ability to produce earphones that appeal to a wide audience while maintaining affordability.

The KEFINE Klean is constructed with superior craftsmanship and delivers sound quality that exceeds expectations for its price point, positioning it as an excellent entry-level choice and a genuine value in a highly competitive market.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the KEFINE Klean is $49 and you can buy it from Linsoul.

Disclaimer: For various Google indexing reasons, most parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos

Reviewer at hxosplus
Almost perfect
Pros: + Excellent tonal balance and coherency
+ Bass technicalities
+ Dynamic and impactful bass
+ No cup reflections
+ Transparency and clarity
+ Natural timbre
+ Suitable for critical listening yet fun
+ The soundstage rivals a lot of open-back headphones
+ Easy to drive and scales well
+ Lightweight with low clamping force and very comfortable
+ Well made with modern appearance
+ High quality carrying case and two cables
+ Price to performance ratio
Cons: - Rather lean textures
- A touch of metallic artificiality in the treble
- Could be more resolving
- The 3.5mm cable is passable
- Doesn't isolate as well as other closed-back headphones
Aune Audio

Aune Audio is a Chinese audio manufacturer recognized for producing high-quality audio equipment that offers exceptional value. Among their notable products are the Aune S9C Pro DAC/amp and the Aune S17 Pro headphone amplifier, both of which are regarded as some of the best value options currently available in the market. Additionally, the newer Aune S17 Pro EVO model is also on offer.

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Aune Audio SR7000

The Aune AR5000 is a budget-friendly, comfortable, lightweight open-back headphone that delivers impressive sound quality, marking the company's inaugural model.

Aune has now introduced its second offering, the Aune SR7000, which features a closed-back design. Retailing at $599, the SR7000 is priced at twice that of the AR5000, and there are valid reasons for this price difference that will be explored further.

Technical highlights

Aune has dedicated extensive time to research and development to optimize the sound quality of the SR7000, aiming for an exceptionally open auditory experience. To accomplish this, the SR7000 incorporates a variety of distinctive and cutting-edge features.

The diaphragm, made from a W-shaped ceramic-reinforced polymer composite, offers an increased effective piston area. Enhanced by Multi-Layer Distributed compensation (MLD), it guarantees consistent piston vibration throughout the entire frequency spectrum while significantly improving high-frequency extension.

The independent and flexible suspension surround is meticulously designed to support the ceramic-polymer cone, allowing for stable positioning during substantial cone movements. Additionally, the airflow channels are specifically tailored to enhance the reproduction of low and resonant frequencies.

The Tilted Acoustic Matrix, an imaging correction system developed through computer-aided design, features drivers that are steeply tilted, along with correspondingly angled ear cups. This innovative approach enables the closed-back SR7000 to deliver a soundstage that is both open and expansive, a characteristic not typically associated with closed headphones.

Furthermore, the integration of acoustic metamaterials into the headphone design, exemplified by the patented acoustic prism known as “Dragon Scale,” allows for precise modulation of sound waves emanating from the rear chambers. This results in a marked enhancement of the sound image while effectively reducing common acoustic colorations, such as resonances, that are often present in closed-back headphones.

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Non Audio stuff

The Aune SR7000, similar to the AR5000, incorporates numerous plastic components to minimize weight; however, these materials may not convey the same level of durability and premium feel as aluminum.

The headband consists of two sections: an outer frame made of stainless steel and a suspension strap crafted from leather. The gimbals and protective grills are constructed from aluminum, while the ear cups and adjustment mechanism utilize plastic. A fine mesh safeguards the drivers, preventing the ingress of dust and debris.

Despite the reliance on plastic, the Aune SR7000 is a well-constructed headphone that exhibits sturdiness and operates quietly during adjustments and use. The material quality and overall craftsmanship are comparable to other headphones, such as the Sennheiser HD660S2.

Visually, the SR7000 mirrors the AR5000, with the primary distinction being its color scheme. The SR7000 features a deep, dark green finish highlighted by golden accents visible through the protective grills, contrasting with the silver finish and red accents of the AR5000. Overall, the SR7000 presents an aesthetically pleasing appearance with a sleek, modern design.

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Wearing experience

The SR7000 incorporates the "Concentric Circle" wearing adjustment system, which was first introduced with the Aune AR5000. The design of the headband and its curvature has undergone continuous refinement to improve compatibility with various head shapes. Notably, the adjustment mechanism of the SR7000 accommodates both smaller and larger head sizes comfortably, without appearing overly bulky.

The ear pads, which can be easily replaced by the user, are filled with soft acoustic slow-rebound foam and are crafted to completely envelop the ears. The outer material is made of synthetic leather, providing a cool sensation, although it lacks the breathability found in the hybrid design of the AR5000.

The clamping force is sufficient to keep the headphones secure during movement and aids in sound isolation, yet it is not so strong as to cause discomfort. Weighing in at just 380 grams, the SR7000 is lightweight and offers exceptional comfort, making it suitable for extended listening sessions.

While the noise isolation is quite effective for home environments, it does not match the level of isolation provided by professional closed-back headphones, which typically feature a stronger clamping force.

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Accessories and cables

The Aune SR7000 package offers significantly more value compared to the AR5000, as it features a premium, stylish carrying case along with two detachable cables. One cable is a standard OFC TRS type, while the other is an upgraded OCC cable equipped with a 4.4mm plug.

The 3.5mm cable is somewhat standard and tends to produce excessive microphonic noise, whereas the balanced cable is exceptionally crafted. It is flexible, resists tangling, and minimizes friction noise. It would have been beneficial for Aune to provide either two high-quality cables or the balanced cable accompanied by a 3.5mm adapter.

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Power talk

The Aune SR7000 features a rated impedance of 55Ω with a sensitivity of 106dB, making it relatively easy to drive. It performs well with both portable and desktop devices, requiring minimal power while still benefiting from higher-quality desktop sources, such as the Aune S9C Pro, which also served as a reference for its tuning.

Aune recommends approximately 30 hours of playback time for the SR7000 to achieve its best performance, and I followed this guideline.

Audio stuff

The SR7000 features a well-balanced tuning and impressive sound coherence across the entire frequency spectrum. It offers excellent sub-bass extension, a neutral bass response, a prominent mid-range with a slight emphasis on the upper mids, and a bright yet non-intrusive treble.

Frequency response graphs can be misleading; the Aune SR7000 exemplifies how such data may not accurately reflect its true sound signature. Relying on auditory experience is always preferable to relying solely on graphical representations.

The overall tuning is remarkably balanced and tonally precise, resembling that of a studio monitor rather than typical consumer headphones. Nevertheless, the Aune SR7000 avoids a clinical or sterile sound, delivering a musical and engaging listening experience across various genres.

The SR7000 demonstrates remarkable tonal accuracy, particularly when considering its price and in comparison to other options in the market. This headphone allows for an authentic representation of all instruments within a symphony orchestra, as well as male and female vocals, delivering a sound that is strikingly true to life with a comprehensive range of fundamentals and harmonics.

The bass response is notably neutral, featuring excellent sub-bass extension that maintains a natural presence without overwhelming the mid-range or causing any bleed. Low frequencies are rendered with impressive precision, free from audible roll-off or any coloration that could detract from tonal fidelity.

The SR7000 is well-suited for critical listening, yet it also offers an enjoyable experience across various music genres, though it may not provide the level of bass excitement some listeners might seek.

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More audio stuff

The ST7000 exhibits impressive technical performance for a closed-back headphone, often surpassing many competing open-back models. Its bass response is characterized by speed, tightness, and control, showcasing remarkable timing and rhythm. The clarity and definition are exceptional, featuring class-leading layering and texture within its segment.

The Aune SR7000 effectively addresses the common limitations typically found in closed-back headphones. Its bass delivers remarkably low distortion, even at higher volumes, and is free from cup resonances and echoing artifacts.

The SR7000 offers a punchy and dynamic sound with a physical presence that rivals many open-back headphones. A minor drawback is that its textures lean more towards those of planar drivers rather than dynamic ones. The bass is not that muscular or visceral, it maintains a slightly dry and lean quality, albeit without sounding too thin or fragile.

The mid-range is present and well-defined, featuring a slight emphasis on the upper mids that is essential for enhancing the clarity and definition required in closed-back headphones. The SR7000 avoids any dark or muffled sound, showcasing remarkable clarity and definition in its mid-range, with very satisfying articulation and resolution. It successfully eliminates sibilance and harshness, even at higher volumes.

The overall tuning is well-balanced, with the mid-range neither recessed nor overly pronounced. The timbre is natural and organic, exhibiting rich saturation. The SR7000 is exceptionally expressive, allowing music to flow in a vibrant and lifelike manner, with textures that are lush and rounded, though not excessively full-bodied or thick.

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And some more

The treble emerges in a similarly understated fashion, yet it is skillfully calibrated to achieve a balance between brilliance and a gentle smoothness. The SR7000 exhibits ample luminosity and energy, performing admirably within its category without coming across as bright or fatiguing.

The higher frequencies possess a sparkling quality, yet they remain free from sharpness or edginess. The SR7000 offers clarity and transparency without veering into overly analytical or revealing territory. While it excels in detail retrieval, it does not delve excessively deep into the nuances of the recording.

The weight of the notes is perfectly aligned with the lower frequencies, ensuring that higher-pitched instruments do not sound thin or dry, a common issue with some other headphones. The timbre is predominantly natural, with only occasional hints of metallic artificiality, depending on the recording. The SR7000 is quick in response, but this speed does not compromise the natural decay of the sound.

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The remarkable soundstage

The soundstage of the Aune SR7000 warrants special mention, as it defies the typical characteristics associated with closed-back headphones. Aune has succeeded in creating a remarkably open and expansive auditory experience, featuring impressive width and depth in its layering.

The imaging capabilities of these headphones are outstanding, delivering a surprisingly holographic and immersive sound. In fact, the Aune SR7000 offers a sense of openness that rivals many open-back models, with the only notable absence being the sensation of air pressure relief that comes from open ear-cups.

Comparison with the Aune Audio AR5000

The AR5000 marked Aune's inaugural headphone release, featuring an open-back design that mirrors the exterior of the SR7000 while delivering commendable sound quality for its price point. However, what additional features does the SR7000 offer to warrant its higher cost?

The answer lies in the SR7000's superior balance and tonal accuracy, which result in significantly enhanced sound quality compared to the AR5000. The AR5000 lacks depth in the sub-bass, exhibits a more colored mid-bass, and presents a brighter sound profile. Its bass response is less punchy and impactful, with textures that are not as refined and have a lower resolving capability. The timbre also falls short, sounding more artificial and sharper in the treble range. Furthermore, the soundstage of the closed-back SR7000 surpasses that of the open-back AR5000. Overall, the SR7000 is a more sophisticated and higher-performing headphone that justifies the additional investment.

Conclusion

The saying "the second time's the charm" holds particularly true for the SR7000. Aune has not only improved the sound quality of their second headphone compared to the first, but they have also created one of the finest closed-back headphones available today.

In my experience testing various closed-back models, including the Sennheiser HD620S, Focal Azuris, and Neumann NDH 20, none have been able to rival the tonal balance and overall sound quality of the Aune SR7000.

Moreover, I can confidently assert that the SR7000 outperforms several open-back headphones in its category, particularly for those who prioritize tonal accuracy and natural sound reproduction.

The SR7000 has proven itself to be so impressive that it has become one of my go-to reference headphones for evaluating audio equipment and for critical listening sessions, especially with classical music.

Lightweight and comfortable, the Aune SR7000 delivers outstanding sonic performance, combining the advantages of a closed-back design while avoiding its typical limitations. Achieving effective isolation while sounding more open than many open-back models is a remarkable feat that certainly warrants your consideration.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the Aune Audio SR7000 is $599 and you can buy it from here.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos

Reviewer at hxosplus
Classic finesse
Pros: + Richer and colourful sound
+ Organic and analog-like timbre
+ Layering and holographic imaging
+ Weighty and visceral bass
+ Full bodied textures
+ They don't lower technical performance
+ Zero noise floor
+ Available as dual and single variants
+ Well made and very compact for discrete op-amps
+ Good heat dissipation
+ Easy installation
+ Reverse voltage protection and lifetime warranty
Cons: - Not that technical and transparent as the V7 Vivid
- Minor loss in dynamics
- Bigger than IC op-amps
- They generate more heat than IC op-amps
Burson Audio is a renowned Australian brand that makes award-winning digital-to-analog converters (DACs) and headphone amplifiers, including models such as the Playmate 3, Conductor, and Soloist.

What is less commonly known is that Burson Audio was among the pioneers in the audio industry to challenge the use of integrated circuit (IC) operational amplifiers in the audio signal path. This stance prompted them to engage in extensive research and development, ultimately leading to the creation of their own operational amplifiers, which are exclusively constructed from discrete components.

These are known as Burson Audio supreme sound op-amps, which have evolved through 20 years of dedicated innovation and have now reached their seventh generation.

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Burson Audio V7 discrete op-amps

Burson Audio has introduced the V7 Pro series, marking the 7th generation of discrete op-amps and succeeding the highly regarded V6 series, after nearly twenty years of dedicated research and development. This latest generation features advanced circuitry and exceptional craftsmanship, delivering enhanced sound quality, improved heat dissipation, and striking visual appeal.

Technical stuff

The Burson V7 op-amp is constructed using up to 8 layers in its PCB design. This approach strategically separates signal path, grounding, and shielding into distinct layers. Although this method is more costly, it is considered the ideal approach for designing analog amp circuits. As a result, the Burson V7 op-amp is not only more compact and practical but also features a shorter signal path and better shielding against EMI.

The V7 is engineered to operate at high temperatures thus it is equipped with a new high-density aluminum shell. This shell effectively dissipates heat from each layer of the PCB into the air, while also safeguarding the sensitive components within. This design allows the V7 op-amp to work with a higher idling current.

Burson Audio uses only the finest audio components, which are matched and tuned in a temperature-controlled environment that simulates real-world operations.

The Burson V7 op-amp has reverse voltage protection and is covered by a lifetime warranty.

Classic or Vivid?

The Burson V7 op-amp is available in two versions, the Vivid and the Classic.

The V7 Vivid, standing out for its dynamism, clarity, and accuracy, is an ideal choice for applications that prioritize absolute precision and transparency.

On the other hand, the Burson V7 Classic features a completely redesigned output stage, addressing the limitations of its predecessor, the V6 Classic.

The V7 Classic now matches the ultra-low noise level of the V7 Vivid, while maintaining the beloved timbre that fans of V6 Classic appreciate. Additionally, it offers improved dynamics and accuracy in the lower frequencies, striking an ideal balance between enjoyment and seriousness.

Both the Vivid and Classic Burson V7 op-amps are available in dual and single variants, just like regular IC op-amps, to cover all usual electronic applications.

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Non Audio stuff

An operational amplifier (op-amp) is typically an internal component of audio devices, where its visual appeal is often overlooked. However, the Burson V7 op-amp stands out with its exquisite design, making it a delight to behold. A transparent lid cover for the amplifier would enhance its visual appeal even further.

The outer casing is crafted from high-density aluminum, which not only provides efficient heat dissipation but also boasts an attractive appearance. The construction quality of the V7 op-amp surpasses that of the plastic V6 op-amp, reflecting superior craftsmanship.

How to install the op-amps

The compact dimensions of the Burson V7 Classic op-amp (15 x 13 x 19 mm) provide extensive compatibility with a range of audio devices, including computer sound cards, DACs, and amplifiers. It is important to ensure that there is sufficient height clearance for the V7 op-amp, as it is taller than standard IC op-amps. If the internal height of your device's chassis is limited, you can purchase Burson’s 35 mm flexible extension leads, which facilitate the horizontal installation of the op-amps.

Prior to purchasing the V7 op-amps, it is essential to consult the device’s manual or identify the type of stock op-amps currently in use. Pay close attention to whether the op-amps are dual or single type to ensure you order the correct variants.

Installation is straightforward, provided the op-amps are housed in DIP8 sockets. Carefully extract the stock op-amps, ideally using op-amp removal tweezers, and then install the Burson Audio op-amps, ensuring the correct orientation is maintained. If you are uncertain about the process, tutorial videos are available on Burson’s Audio website for guidance.

Burson Audio discrete op-amps operate at significantly higher temperatures than IC op-amps and produce more heat, so it is crucial to ensure that the device is adequately ventilated.

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Associated gear

This review focuses specifically on the V7 Classic op-amps. For insights on the V7 Vivid op-amps, please refer to my other review.

The Violectric V380² is a premium DAC and headphone amplifier combination that is widely recognized as a standard in the audiophile community.

The balanced headphone amplifier features four distinct power amplifiers, one for each phase. Each of these power amplifiers is powered by a NE5534 op-amp at the input stage, which is socketed for easy replacement. In this instance, the original four op-amps have been substituted with Burson V7 Classic op-amps.

For this evaluation, I utilized the Hifiman Susvara and HE1000 Stealth headphones, both known for their exceptional transparency, paired with Lavricables pure silver cables.

Audio stuff

Switching back and forth between the stock IC and the Burson V7 Classic op-amps to do an A/B comparison is quite a complex task, which led me to limit my playlist to a select few favorite tracks while taking detailed listening notes. To streamline the process, I utilized the built-in DAC of the V380² in conjunction with the Volumio Rivo+ transport.

The NE5534 op-amp is a popular choice in audio applications due to its remarkably low noise levels, impressive output drive capability, high unity-gain bandwidth, minimal distortion, and rapid slew rate.

Replacing the NE5534 with the Burson V7 Classic op-amps did not adversely impact the technical performance of the V380² in any way. The sound quality remained entirely transparent and pristine, maintaining the exceptional fidelity and precision characteristic of the Violectric V380², so there is no need for concern regarding any compromise in the amplifier's technical capabilities.

The introduction of the Burson V7 Classic op-amps altered the sound signature to a subtly different direction while still achieving the same high standard. It can be likened to adjusting the seasoning in a beloved dish; the overall flavor remains delightful, but the aftertaste may vary slightly.

In the already controlled sounding amplifier, the discrete op-amps contributed by slightly softening the overall presentation, introducing a sense of ease while maintaining control. The bass becomes more flexible and engaging, yet retains its tightness and precision, while the treble exhibits a more refined character without sacrificing extension and clarity. Although there may be a slight reduction in dynamic impact and attack, the bass benefits from increased weight and fullness.

The mid-range remains clear and well-defined, while also becoming richer and more harmonically diverse. The V380² is an amplifier known for its remarkably natural timbre, and the Burson V7 Classic op-amps enhance its analog and organic qualities without negatively affecting the sound.

The internal DAC of the V380² can occasionally exhibit a sharp and sterile sound profile; however, this is significantly mitigated when using the V7 Classic op-amps, which effectively minimize digital glare. While the transient response may not match the speed of the NE5534, the treble frequencies transition in a more natural and convincing manner.

Replacing the stock IC with the V7 Classic op-amps is akin to introducing a tube buffer stage prior to the power amplifiers. The Burson V7 Classic op-amps tend to introduce harmonics that enhance the realism and lifelike quality of the timbre, all while maintaining the amplifier's technical performance and linearity. Additionally, the soundstage acquires a tube-like quality, enhancing holographic layering without compromising imaging accuracy.

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Further notes

It is important to clarify that the differences we are discussing are not drastic but rather subtle enhancements in sound quality that many users may find appealing compared to the original sonic profile of the audio device in question.

Nonetheless, it is quite possible that some individuals may not appreciate the alterations introduced by the Burson V7 Classic op-amps and may choose to retain the stock configuration.

Additionally, it should be noted that all previous listening observations pertain specifically to the Violectric V380² DAC/amp utilized in this review, and there is no assurance that all audio devices will respond similarly.

Comparison with the Burson Audio V7 Vivid op-amps

The V7 Classic op-amps offer a slightly different sound profile compared to the V7 Vivid op-amps, trading some degree of transparency and precision for a richer timbral quality. While the distinctions are subtle, the V7 Classic op-amps tend to impart a more organic and analog-like essence to the sound, in contrast to the Vivid models. The choice between the two ultimately hinges on whether you prioritize optimal solid-state fidelity and clarity or prefer to introduce a hint of tube-like warmth to your music.

Ultimately, I found both the V7 Classic and Vivid op-amps to provide a superior listening experience compared to the stock IC op-amps, which are now relegated to a distant shelf.

Conclusion

Exploring new sonic avenues and enhancing your favorite music can be achieved through the use of tubes. However, if you do not possess tube equipment or prefer to avoid tubes altogether, there is an alternative. If you are fortunate enough to have solid-state audio gear with socketed op-amps, you can delve into the hobby of op-amp rolling. While it may not provide the same level of impact as tube rolling, it can be just as engaging.

You can experiment with various IC op-amps, but it is unlikely that any will match the sound quality of Burson Audio's discrete op-amps. Among their two options, the Classic and the Vivid, the Vivid is technically impressive, yet the Classic is ideal for those seeking to enrich harmonic diversity and enhance melodic lines without significant compromises in performance. Don't hesitate to give them a try; you may find that they elevate your favorite music to new heights.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The prices of the V7 Classic op-amps are $110 for a pair of single and $169 for a pair of dual op-amps. You can buy them from here.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos

Reviewer at hxosplus
FiiO does it again
Pros: + Stellar audio performance
+ Competitive technicalities
+ Not much artificiality
+ Good power output
+ No background noise
+ Spacious and accurate soundstage
+ Android 13 OS with Play Store
+ Large and bright screen
+ Ideal combination of size and features
+ Fast and responsive UI
+ Lightweight and ultra thin
+ Affordable and great value for money
Cons: - Latency in USB DAC mode
- Low RAM / Not suitable for multitasking
- Plastic back cover with a visible seam
- The protective case feels loose
Jade Audio

Jade Audio is a sub-brand of FiiO, dedicated to creating trendy and youthful audio devices that maintain high performance and quality while remaining budget-friendly. Key products include the KA15 portable USB DAC, the JT1 over-ear headphones, and the JD7 earphones. Typically, Jade Audio products are marketed under the FiiO name, and I will refer to them as such moving forward.

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The extinction of budget DAPs

In recent years, the majority of the audio industry, including FiiO, has shifted away from producing entry-level digital audio players (DAPs) in favor of portable USB DAC dongles, which have improved significantly due to increasing demand.

However, not all enthusiasts have embraced the concept of using their smartphones with a DAC attached, choosing instead to hold on to their preferred DAPs. While mid-range and high-end DAPs continued to be developed, there has been a notable shortage of entry-level, budget-friendly options.

It appears that there remains a strong interest in compact and affordable DAPs, prompting manufacturers to reconsider their strategies and introduce new models.

The JM21 represents FiiO's return to the entry-level DAP market, marking the brand's first affordable offering in many years.

FiiO JM21

The FiiO JM21 is a budget-friendly digital audio player designed for novice users who prefer not to use USB DAC dongles and seek a standalone solution for music enjoyment. Additionally, it appeals to seasoned audiophiles in need of a more portable and lightweight alternative to their premium models, allowing for everyday use.

Technical highlights

The JM21 may be positioned as an entry-level device, yet its hardware and software capabilities significantly exceed expectations for its price point, and its overall configuration is comparable to more expensive digital audio players (DAPs).

This audio player features a sophisticated circuitry design that incorporates two CS43198 DAC chips paired with dual independent SGM8262 amplifiers, delivering an impressive output of 700mW at 32Ω from the balanced output.

It utilizes a primary control chip alongside a 5th generation FPGA, which is equipped with dual custom femto-second crystal oscillators to minimize jitter prior to DAC conversion, thereby ensuring a direct signal path—an advantage not typically found in USB DAC dongles.

Additionally, the JM21 is designed with separate power supplies for its digital and analog sections, utilizing numerous precision LDO regulators. The architecture further enhances performance by isolating the main controller, DAC, and headphone amplifier into distinct zones, each with dedicated shielding and isolation.

You can read more about the FiiO JM21 here.

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Non Audio stuff

The JM21 features a compact design measuring 120.7x68x13mm, weighs only 156g, and is remarkably thin, with buttons strategically positioned for music playback and volume adjustments. However, it lacks the programmable multifunction button found in FiiO's higher-end models. The FiiO JM21 is equipped with both 3.5mm and 4.4mm analog outputs, a USB Type-C port, a micro SD card slot, and an LED indicator that changes color based on the input sampling rate.

The chassis of the JM21 combines an aluminum-alloy front cover in a sky-blue finish with a silver-painted plastic back cover, which is connected by a visible seam. While FiiO's choice of plastic helps reduce costs and weight, the overall construction, although well-executed, raises some concerns regarding the durability of the back cover.

Hardware and software

The JM21 is equipped with Qualcomm's latest Snapdragon 680 SoC, which boasts an 8-core design based on the Kryo 265 architecture. It is complemented by 3GB of RAM and 32GB of internal storage, operating on a highly customized version of Android 13.

Although the device comes with access to Google’s Play Store, FiiO recommends that users install only streaming applications and limit themselves to running a single task at any given time due to the constraints of the available RAM.

FiiO has chosen a 4.7” HD screen (750*1334) for the JM21, striking an ideal balance between size and visibility. The display is characterized by its vibrancy, brightness, and responsiveness, allowing users to enlarge fonts and utilize various Android customizations, including night mode and dark theme. However, it does not feature double tap to wake or automatic brightness adjustment.

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User interface

The JM21 operates on the familiar Android 13 OS, functioning similarly to a smartphone, allowing users to perform most Android tasks and utilize various applications, provided they are compatible with the device's limited RAM.

When using streaming services like Qobuz and Tidal, browsing the internet, or accessing the FiiO music player, the JM21 delivers a quick and responsive performance, ensuring a seamless and lag-free experience. The dropdown menu features shortcuts to commonly used functions.

Designed primarily for music listening, the JM21 is not intended to serve as a multimedia hub. If you acknowledge and accept this limitation, you will discover that the JM21 operates with impressive speed and responsiveness.

Connectivity and playback modes

The DAP offers support for various modes including Android mode, Pure Music mode, AirPlay, USB mode, and Bluetooth 5.0 mode. Engaging Pure Music mode activates the built-in FiiO music player, disabling all other functions to ensure optimal audio quality.

In contrast to other FiiO DAP models, the JM21 does not feature a global equalizer, as its functionality is restricted to the FiiO music player. The device includes a global SRC bypass, preserving the original sampling rates during playback and streaming across all applications.

Bluetooth functionality encompasses both transmission (SBC/AAC/aptX/aptX HD/LHDC/LDAC) and reception (SBC/AAC/LDAC) modes. The performance remains stable within a single room, delivering high-quality sound when using the LDAC codec.

The USB connectivity is bidirectional, allowing the JM21 to function as either a USB DAC or a streaming transport to an external DAC. Additionally, coaxial SPDIF digital output is available through the 3.5mm jack. FiiO advises that using the USB DAC mode may result in increased latency, making it unsuitable for watching movies or gaming. Both 3.5mm and 4.4mm headphone outputs can be set up as line outputs with either fixed or variable levels.

Battery duration

The JM21 features a 2400mAh battery that delivers approximately 9 to 10 hours of playback time when using the balanced output for streaming high-resolution music. This performance is commendable given its compact size, and should the battery deplete, it can be fully recharged in roughly 2 hours with a 5V/2A charger.

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Accessories

The package comes with a clear silicone protective case and a USB cable, while the front cover features a factory-applied film screen protector. The JM21 is designed with a lanyard hole, although a lanyard is not provided.

Power output

The JM21 delivers 700mW at 32Ω from its balanced output, making it capable of powering a wide range of full-sized headphones, provided they are not overly insensitive. Its remarkably low noise floor ensures outstanding performance with sensitive earphones.

The device features three gain settings, each with distinct volume curves, allowing for optimal compatibility with different loads. The Aune SR7000, which is easy to drive, complemented the JM21 perfectly, while earphones such as the FiiO FD15 were effortlessly manageable.

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Audio stuff

Comparison notes with the FiiO KA15 are included in the text.


The sonic performance of the FiiO JM21 is truly impressive, drawing strong parallels to the FiiO KA15 DAC/amp due to their shared audio architecture. However, the JM21 benefits from a more sophisticated battery-powered power supply, resulting in a more refined sound profile, enhanced silence, a broader dynamic range, and added punch in the bass.

Its sound signature is characterized by neutrality and exceptional clarity, offering remarkable transparency and fidelity for its category. Interestingly, the JM21 presents a slightly more energetic and brighter treble compared to the warmer FiiO KA15, yet it manages to avoid sounding clinical or harsh.

The bass response is profound and powerful, exhibiting speed and precision, slightly lean and dry yet offering impressive layering and clarity. When paired with suitable earphones, the JM21 delivers a vibrant and dynamic bass that balances both quantity and quality, appealing to both discerning and casual listeners alike.

The mid-range is expansive and clearly articulated, providing ample harmonic richness that renders instruments and vocals with a lifelike realism. While the JM21 may be drier and less rounded compared to the FiiO KA15, it surpasses it in terms of clarity, resolution, and texture refinement.

The treble exhibits a vibrant and lively character with impressive extension. While there is a hint of brightness, the sound remains smooth and free from sharpness or harshness. The timbre is sufficiently natural, avoiding any noticeable artificiality or digital harshness.

Interestingly, the NOS filter of the CS43198 DAC chip does not perform as effectively as it does in the KA15, lacking the usual organic quality. Detail retrieval is exceptional for this category, with micro details presented in a manner that ensures the JM21 does not come across as overly analytical.

The soundstage is broad and well-defined, offering good depth and layering. The JM21 excels in separation and imaging accuracy for an entry-level DAP, surpassing the KA15 in these aspects. While it may not be the most holographic or immersive player, it successfully conveys a sense of grandeur across various musical genres.

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Comparison with the FiiO M11S

The M11S served as FiiO's most budget-friendly and entry-level digital audio player prior to the launch of the JM21. With a price tag of $499, the M11S is twice as expensive as the JM21. Its audio design features dual ES9039Q2M DAC chips, each with independent low-pass filtering, along with dual OPA926 op-amps for amplification.

While the M11S does not surpass the JM21 in power output (660mW at 32Ω compared to 700mW at 32Ω), it does offer a slightly longer battery life. The device is powered by the Qualcomm 660 SoC, equipped with 3GB of RAM and 32GB of ROM, and operates on the Android 10 operating system. Although the OS may be considered somewhat outdated, the overall user experience remains largely consistent between the two players, with no significant differences.

The M11S features a significantly superior construction, boasting a complete aluminum casing and a glass back panel; however, it is bulkier and heavier compared to the JM21.

In terms of audio performance, the M11S offers a more refined experience than the JM21, showcasing enhanced technical capabilities, richer textures, and more powerful bass. The M11S delivers greater resolution and clarity, along with a deeper and more immersive soundstage. While the M11S outperforms the JM21 in sound quality, it comes at a higher price point and operates on outdated software, with no ongoing support from the manufacturer.

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Comparison with the Shanling M1 Plus

The Shanling M1 Plus, priced at $209, is an entry-level digital audio player (DAP) featuring an audio design centered around the ESS ES9069Q DAC chip, complemented by dual SGM8262 amplifiers that deliver 660mW/32Ω from its balanced output.

In contrast to the FiiO JM21, the Shanling M1 Plus operates on the proprietary MTouch OS rather than an Android platform. This model is a traditional DAP, meaning it does not support app installations, with Tidal being the sole streaming service available.

While the JM21 boasts a larger 4.7-inch display and is exceptionally slim, it does not match the compactness or lightweight nature of the M1 Plus (156g compared to 116g). Additionally, the M1 Plus features a more robust construction with a full aluminum body and glass panels.

Both devices offer similar connectivity options; however, the JM21 includes true line outputs that bypass the amplifier stage. Sound quality is impressive in both players, with only slight audible differences.

Ultimately, the decision hinges on size and weight. Those seeking a compact and lightweight player who can forgo certain features may opt for the M1 Plus, while others might lean towards the more feature-rich, albeit slightly larger and heavier, FiiO JM21.

Conclusion

The launch of the JM21 marks FiiO's return to its foundational principles. This is the brand that once produced some of the most competitively priced and highly regarded entry-level digital audio players (DAPs) on the market, achieving impressive sales figures.

As the excitement surrounding USB DAC dongles has diminished and interest in entry-level DAPs is on the rise once more, FiiO is ready to demonstrate that one can always return to their roots.

The FiiO JM21 is an affordable entry-level DAP that offers excellent portability alongside outstanding audio quality, incorporating all the key features expected from a contemporary player. It serves as a fantastic option for both newcomers and seasoned users, making it suitable as either a first DAP or a secondary device for everyday listening.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the JM21 is $199 and you can buy it from here.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos
Ichos
I am not sure but wouldn't you need GPS reception and mobile data to use it?
jbfps116
jbfps116
It should work from a cable like iphones do... my Hiby R4 does NOT. Apparently, if the Android Auto app doesn't come PREINSTALLED on the device/phone, it is NOT compatible. Downloading the app from the Play store will not work. The first DAP that supports this will be very tempting to me LOL.
Ichos
Ichos
I guess that the software developers think that this app is out of the scope of delivery. I don't know if they have to pay extra rights to support it.

Ichos

Reviewer at hxosplus
Back to the roots
Pros: + Neutral and balanced sound signature
+ Competitive technicalities
+ Spacious soundstage with good imaging
+ Minimum digital glare
+ Powerful amplifier for the size
+ Silent background
+ Responsive user interface
+ Double tap to wake the screen
+ DLNA and Airplay support
+ Embedded Tidal application
+ WiFi and Bluetooth connectivity
+ Compact and lightweight
+ Ease of use
+ Excellent build quality
+ Very affordable
Cons: - Doesn't support other streaming services except Tidal
- Can't download and install apps
- Average battery duration
- Rather thick body
- Small and low resolution screen
- Fonts are difficult to read and can't be enlarged
- The Tidal application doesn't support gapless playback
- The protective case is not included as a standard
Shanling is well-established brand in the audio industry, having specialized in portable and desktop audio equipment for over three decades. Their range of products, including earphones, portable audio players such as the M0 Pro, USB DAC dongles like the UA1 Plus, and stationary devices, has garnered praise from both professional reviewers and audio enthusiasts.

A recent addition to their diverse lineup is the Shanling M1 Plus, a compact digital audio player that offers essential features and wireless connectivity. This model serves as an upgrade to the M1S and occupies a space between the entry-level M0 Pro and the more advanced M3 Ultra. Notably, all three players utilize Shanling’s proprietary MTouch interface rather than the widely used Android operating system. The M1 Plus is a more affordable sibling of the M5 Ultra that also uses the MTouch OS.

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Technical highlights

The Shanling M1 Plus audio circuit utilizes the ESS ES9069Q DAC chip, paired with dual SGM8262 amplifiers to achieve a fully balanced output stage capable of delivering up to 660mW at 32Ω.

In terms of advanced features, the M1 Plus incorporates Shanling's proprietary FPGA signal processing technology, which is enhanced by dual independent clocks sourced from the Japanese company KDS. Additionally, the circuit board is equipped with high-quality electronic components, including ELNA Silmic II capacitors.

Non Audio stuff

The Shanling M1 Plus features a chassis constructed from aluminum alloy, complemented by tempered glass panels on both the front and back. With dimensions of 86 x 61 x 17 mm and a weight of just 116 grams, it is both compact and lightweight, making it an excellent choice for portable use. While some users may perceive it as slightly thick, it comfortably fits in the palm of the hand.

The design showcases a minimalistic yet contemporary aesthetic, characterized by an ergonomic asymmetrical shape that enhances handling and grip. It includes three buttons for playback control and a backlit volume wheel that also functions as the power on/off switch.

The build quality is exceptional; the M1 Plus is meticulously crafted and finished, giving it the appearance of a premium digital audio player that far exceeds its price point.

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Connectivity

The M1 Plus, despite its compact size, provides an extensive range of connectivity options. It features bi-directional Bluetooth V5.2, a two-way USB connection, a 3.5mm coaxial SPDIF output, and Wi-Fi capabilities for DLNA/Airplay, along with local playback via a micro SD card.

Additionally, the M1 Plus includes two headphone outputs (one 3.5mm single-ended and one 4.4mm balanced), a USB type-C input, and a micro SD card slot.

This device can function as a Digital Audio Player (DAP), a USB Digital-to-Analog Converter (DAC), or a USB/SPDIF digital transport to an external DAC. In USB DAC mode, it supports PCM decoding up to 384kHz/32bit and DSD256, while local playback capabilities extend to 768kHz/32bit DSD512. A notable feature of the USB mode is the option to enable or disable battery charging based on the specific usage scenario.

Bluetooth and Wireless connectivity

The Bluetooth is bidirectional and compatible with LDAC, aptX HD, aptX, AAC, and SBC codecs, providing reliable performance and range within a room. It automatically switches to receiver mode when earphones are connected and reverts to transmitter mode upon disconnection.

You can utilize DLNA and Airplay to access music libraries connected to your home network or stream music from different streaming services. The most effective method is to launch the BubbleUPnP application and choose the M1 Plus as the music renderer. I tested it with Qobuz, and it functioned smoothly, although there was a slight delay when skipping tracks.

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User experience

The device operates on the Ingenic X2000 platform and features Shanling's latest MTouch OS, designed for efficient and straightforward audio playback. Users can access and play local files stored on the SD card or stream music via the integrated Tidal application. However, the M1 Plus does not support additional streaming services, and no other applications can be installed.

The MTouch interface includes standard library search functionalities and offers extensive customization options similar to other Android players. Available features encompass home screen and playback configurations, eight digital filters, display and idle settings, in-vehicle mode, a parametric equalizer and others. Additionally, it provides a drop-down menu with shortcuts to frequently used functions, such as amplifier gain and direct access to playback or system settings.

The MTouch OS powers up almost immediately, providing a seamless and responsive user experience, although this is slightly affected by the small 3.2-inch screen with a resolution of 320x480.

Browsing functionality is satisfactory, cover art is rendered accurately, and the screen features a double-tap to wake function. However, there are notable drawbacks, including limited maximum brightness, font sizes that are too small for comfortable reading, and a virtual keyboard that resembles an outdated keypad design.

Additionally, the player allows for online firmware updates, provided an SD card is inserted, and it is also compatible with Shanling's Eddict player application.

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Tidal application

The M1 Plus natively supports only one streaming service: Tidal. This service provides access to its entire library and your saved favorites, although it does not offer offline content. The login process is straightforward; simply use a smartphone with the Tidal app installed to scan the QR code displayed on the M1 Plus.

The application operates seamlessly, delivering smooth playback and efficient search capabilities. However, a drawback is the lack of gapless playback, which is supported in local playback mode on the M1 Plus. This issue is a glitch that should be addressed in an upcoming firmware update.

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Battery duration

The MTouch OS, combined with the energy-efficient Ingenic X2000 processor, offers a notable benefit: the M1 Plus, equipped with a modest 2100mAh battery, provides approximately 8-9 hours of playback time when streaming music from Tidal at a balanced output. While this may not be exceptional, it is a commendable duration considering the compact size of the device, further enhanced by its capability for rapid 15W charging. You can get even better battery duration if you play local files.

Accessories

The package contains a USB Type-C to Type-A cable, a screen protector, and accompanying documentation. For an additional nominal fee, a protective case can be purchased. This high-quality case fits the device perfectly; however, it slightly restricts the use of the volume wheel.

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Power and noise

The M1 Plus, despite its compact design, delivers impressive power output of 660mW at 32Ω from the balanced output and 195mW at 32Ω from the single-ended output. This level of power surpasses that of most USB DAC dongles, enabling it to effectively drive a wide range of earphones and many full-sized headphones. It handled headphones such as the Aune SR7000 effortlessly, while maintaining complete silence and noise-free performance with sensitive earphones like the Juzear Dragonfly 81T.

Audio stuff

The audio quality of the Shanling M1 Plus is exceptional, rivaling that of higher-end digital audio players such as the Shanling M3 Ultra and the FiiO M11S. It significantly surpasses most USB DAC dongles in terms of power output and minimizes background noise. The sound profile strikes a balance between clarity and fidelity, delivering a musical and engaging listening experience.

The M1 Plus maintains a neutral sound with impressive technical capabilities, all while preserving a natural timbre that avoids excessive artificiality or digital harshness.

The bass response is deep and weighty, characterized by a punchy and impactful delivery that remains tight, well-paced, and controlled, while also providing a satisfying level of definition and layering for its category.

The mid-range presents a rich, harmonious, and vibrant sound profile, characterized by realistic timbre and natural tonal colors. Both voices and instruments exhibit a lifelike quality, while the performance remains impressively linear and transparent.

The treble is bright and dynamic, showcasing a significant degree of luminosity typical of an ESS DAC chip. However, the engineers have successfully managed to maintain a balance, preventing excessive brightness and sharpness.

The retrieval of micro details is satisfying, and the M1 Plus stands out as exceptionally resolving and refined within its category. While the timbre retains a natural quality, it is not entirely free from digital artifacts, and the textures demonstrate good continuity, albeit with a slight reduction in weight compared to the lower frequencies.

The soundstage produced by the balanced output exhibits naturally expanded dimensions, impressive depth layering, ample inner space, and accurate imaging.

While it may not achieve the holographic and immersive qualities found in higher-end digital audio players, it remains sufficiently grand and convincing for large-scale compositions. When paired with a quality set of earphones, you will be pleasantly surprised by its expressive and outgoing character.

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Comparison with the FiiO JM21

The JM21, priced at $199, is FiiO's (or Jade Audio, if you prefer) newly launched digital audio player (DAP) in the entry-level segment, a category the brand had previously overlooked.

This device provides a comprehensive Android 13 experience and features an audio circuit that incorporates dual CS43198 DAC chips and dual SGM8262 amplifiers, ensuring a fully balanced output. The JM21 offers slightly greater power than the M1 Plus, delivering 700mW compared to 660mW, and boasts a slightly longer battery life. (Battery duration was tested in steaming conditions)

With a larger 4.7-inch display, the JM21 is ultra-thin but not as compact or lightweight as the M1 Plus, weighing 156g versus 116g. The M1 Plus is also constructed with a higher-quality finish, as the FiiO model utilizes a plastic back cover to reduce weight.

Connectivity options are largely similar; the JM21 features true line outputs that bypass the amplifier stage, while both players deliver excellent sound quality with only minor differences in audio characteristics.

Ultimately, the decision hinges on size and weight. Those seeking a more compact and lightweight player, who are willing to forgo certain features, may prefer the M1 Plus. In contrast, others might opt for the more feature-rich yet larger and heavier FiiO JM21.

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Conclusion

The Shanling M1 Plus is a compact and lightweight digital audio player that boasts impressive build quality and excellent sound performance for its price point. It covers all the essential features, although it lacks support for certain streaming services such as Spotify.

It is encouraging to see that several audio manufacturers continue to invest in the entry-level DAP market, catering to enthusiasts who prefer playing audio files over streaming and value the independence offered by a dedicated DAP instead of relying on a mobile phone with a USB DAC dongle.

Using a traditional DAP has numerous advantages and the Shanling M1 Plus stands out as an outstanding option for those seeking portability without compromising on sound quality and functionality.

While there are even more compact alternatives, like the Shanling M0 Pro, or feature-rich options such as the FiiO JM21, the M1 Plus strikes an ideal balance between size and performance, making it an excellent choice.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the Shanling M1 Plus is $209 or $215 with the protective case and you can buy it from here.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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H
HARD SOUND
Could you describe in more detail the difference in sound between Fiio JM21 and M1+?
Ichos
Ichos
The JM21 is slightly more clean and maybe a touch more bright. A little more open soundstage too. The M1 Plus is just slightly warmer, thicker note weight and fuller bass. Very minimal differences to the point that someone novice would think that they sound identical.

Ichos

Reviewer at hxosplus
A blast from the past!
Pros: + Bass prominent yet balanced tuning
+ Impressive sub-bass extension
+ Dynamic and visceral bass
+ Excellent control and speed
+ Mid-range finesse and resolution
+ Polite yet not romantic treble
+ Texture quality
+ Musical and organic timbre
+ Vintage analog sound
+ Exceptional sound cohesion
+ Comfortable and lightweight
+ Very well made and beautiful looking
+ High quality cable and plentiful accessories
Cons: - Low-end resolution and layering
- Average treble technicalities
- Could do better with clarity and transparency
- One dimensional and average soundstage
- The cable is not modular
- Relatively easy to drive but need power to shine
Penon Audio is an online retailer shop, offering a wide range of audio products from numerous brands, in addition to producing their own line of earphones and audio accessories. Like the Vortex which is one of my favorites. The company is also the creator of the renowned ISN brand, known for its highly regarded earphones, including models such as the ISN NEO 5 and the EST 50.

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Penon Quattro

The Penon Quattro is an advanced multi-driver earphone that employs a complete dynamic driver array, distinguishing it from the typical hybrid or fully balanced armature setups. This model incorporates a distinctive arrangement featuring a 6mm custom dynamic driver for high frequencies, an 8mm graphene diaphragm driver for midrange sounds, and two 10mm composite diaphragm drivers dedicated to bass.

To enhance the low-frequency response, the Quattro utilizes a state-of-the-art horizontally opposed dual low-frequency driver, which significantly improves the bass experience. The midrange is powered by a next-generation graphene material driver, providing richer detail, while the high frequencies benefit from an innovative driver manufacturing process that results in a smoother and more refined sound.

Additionally, the Quattro is designed with a 3-way crossover and a three independent conduit system, optimizing layering performance and ensuring a harmonious integration of the drivers.

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Non Audio stuff

The ear-shells of the Penon Quattro are crafted by hand from medical-grade resin, ensuring they are both lightweight and gentle on the skin. Their custom-like design conforms to the natural shape of the ear, providing optimal ergonomics. The faceplates feature a striking marble pattern in shades of blue and black, while the remainder of the body is a rich black.

Although the ear-shells have a touch big, they are not as bulky as one might anticipate given the number and size of the drivers. The fit is comfortable for prolonged use, and the ear-shells sit snugly without excessive protrusion. The nozzle is relatively short, which may require some users to opt for double flange ear-tips to achieve a secure fit and effective noise isolation.

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Cable and accessories

The earphones feature a premium 2-pin detachable cable, distinguished by its striking blue-electric outer sheathing. This cable is designed to be soft and lightweight, allowing for easy bending without tangling and minimizing friction noise. While the cable is not modular, you can choose to order it with a 4.4mm, 2.5mm, or 3.5mm plug.

Included in the package is a high-quality carrying case with a convenient side zipper, spacious enough to accommodate the earphones along with your preferred USB DAC dongle. Additionally, you will receive three sets of silicone ear tips in various sizes, a leather pouch, a clip, and a cleaning brush.

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Audio stuff

The earphones are rated at 16Ω of impedance with 100dB of sensitivity and they are relatively easy to drive but a little sensitive to source noise. They scale quite well so they respond to upstream and especially to more powerful gear. The Penon Audio Tail is good for starters but you can do much better with the iBasso DX180 or the FiiO Q5.

To be clear from the outset, the Penon Quattro is not designed for audiophiles and may not be suitable for critical listening. Those who prioritize detail and precision should consider other options. However, for everyone else, the Quattro offers an impressive listening experience worth exploring.

The Quattro features a bass-forward tuning with remarkable sub-bass extension, while still achieving a commendable tonal balance from the lower mids to the higher frequencies. Although the low-end may lack tonal accuracy, this is intentional; the Penon Quattro is crafted to deliver a fun, enjoyable, and bass-heavy sound across various music genres, all without sacrificing the quality of the mid-range and treble.

The bass is enhanced to a level that rivals a subwoofer, yet it remains precise and of exceptional quality. The lower frequencies are prominently highlighted without overshadowing the mid-range or overwhelming the treble, allowing for an enjoyable listening experience across a wide range of genres, not just electronic music. Whether it's classic rock, modern pop, or even jazz, the bass delivers a satisfying rumble while still maintaining clarity in the vocals and other acoustic instruments.

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The bass response is dynamic, impactful, and physically engaging, akin to having a subwoofer pressed against your eardrums. The Quattro exhibits remarkable dynamism while maintaining a fast, tight, and controlled sound without any cup reverb.

It is advisable not to rush to conclusions about its performance right away, as the manufacturer recommends a burn-in period of 200 hours to allow the dynamic drivers to loosen and achieve their best performance.

The layering, resolution and clarity are good but there is significant potential for enhancement. However, it is important to note that the Quattro is not designed for critical listening, and technical performance is not its primary focus.

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The mid-range is skillfully integrated and highly musical, with a natural and organic timbre that enhances the realism of both voices and instruments. The Quattro offers a striking mid-range presence and clarity, avoiding any sibilance or listener fatigue. The music flows effortlessly, with the earphones providing excellent resolution and articulation for their category.

The treble is smooth and refined, yet sufficiently extended and lively. It pairs well with the lower frequencies and mid-range, preventing an overly dark or romantic tone while avoiding excessive brightness. The timbre remains natural even at higher frequencies, ensuring that high-pitched instruments sound authentic rather than metallic or harsh. Detail retrieval is satisfactory, offering ample useful information without any clinical or overly sterile characteristics.

The innovative choice to equip the Quattro with a complete dynamic driver array results in an earphone that delivers remarkable cohesion and stable texture across the entire frequency spectrum. Unlike many earphones in its class that utilize balanced armature drivers, the Quattro maintains a rich sound at higher frequencies, free from the metallic artificiality often associated with such designs.

However, it does fall slightly short when compared to rival earphones in terms of soundstage. While it avoids congestion, the soundstage lacks the width, depth, and spaciousness that some users may desire. Although it allows for accurate localization and identification of instruments, the Quattro does not provide an immersive out-of-the-head listening experience and could benefit from greater expansiveness.

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Conclusion

The Penon Quattro is a well-crafted and comfortable earphone featuring a distinctive driver configuration and a specialized tuning that emphasizes a fun and bass-heavy sound profile.

Despite this focus on low-end performance, it does not neglect the mids and treble, ensuring a tonally balanced experience that remains technically proficient across various music genres.

The Penon Quattro presents a unique alternative that is likely to attract users seeking something beyond the typical commercial sound signatures.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the Quattro is $399 and you can buy it from Penon Audio.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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jsmiller58
jsmiller58
Nice review, but I find it hard to reconcile what you wrote about the mids and treble. To my ears - and I stress the word MY - the bass bleeds so much into the mids that the mids come across as muddy, and there really does not seem to be any treble extension at all. Maybe it’s just my ears or maybe just my set, but I do recall the controversy the Quattro generated when it first came out for similar reasons. But I’m happy you and others like it.
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Reactions: Ichos
Ichos
Ichos
Thank you. The treble while extended in terms of frequency response, it is not that sparkling and energetic so we might be talking about the same thing but in different words. As for the mids I honestly don't find them lacking in presence or muddy at all. I have used the black tips and the Liquor orange if that helps.
jsmiller58
jsmiller58
I have them as well, so I will try those tips on my set.
  • Like
Reactions: Ichos

Ichos

Reviewer at hxosplus
Silver XLR balanced interconnects v4
Pros: + Exceptional transparency and fidelity
+ Achromatic cable that will not affect frequency response
+ Doesn't add brightness or sterility
+ Improved detail extraction
+ Wide and deep soundstage
+ Enhances imaging accuracy
+ Extra sense of silence and blackness
+ Very well made
+ Premium appearance
+ High quality XLR plugs
+ Soft and bends easily
Cons: - Extremely revealing and transparent
- Requires careful matching
- Not suitable for frequency response management
- The sonic qualities are not guaranteed and are system dependent
- The intensity of the sonic enhancements can vary from system to system
Lavricables Grand 20-core Silver XLR balanced interconnects v4

The fourth generation of Lavricables Grand 20-core silver balanced XLR interconnects is now available, featuring palladium silver as the core material. Each channel consists of 20 strands of 5N solid silver wires, including 12 strands of awg28, 4 strands of awg26, 2 ribbon strands of awg26, and 2 strands of awg27 palladium silver, all encased in oversized PTFE Teflon insulation. The interconnects are equipped with high-quality AECO XLR plugs, which have pure copper pins soldered using Mundorf Supreme Silver 9.5% audio solder.

The Teflon Litz construction, featuring a woven design, is specifically engineered to effectively reject RFI and EMI while maintaining low capacitance. The use of 5N silver enhances the transmission of electrical signals, allowing for faster speeds and reduced distortion compared to standard OFC wires. Additionally, the premium Teflon insulation provides a superior air dielectric, making it one of the finest insulators available for bare cables. The separation of 20 silver cores significantly diminishes the "skin effect" at higher frequencies. The overall width of the 20-core braided cable measures approximately 9mm.

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Non Audio stuff

The Lavricables Grand is a remarkably crafted cable that exudes a premium appearance, often seeming more luxurious than its actual price suggests. Each plug features heat-shrink strain reliefs to safeguard the cable entry, while additional heat-shrinks adorned with the Lavricables logo help maintain the cable's integrity and prevent twisting. This cable is lightweight, flexible, and retains its shape without becoming tangled.

The plugs are of superior quality, and customers can choose to add a black silk sleeving for enhanced protection, although this option may obscure the cable's aesthetic appeal. It stands out as one of the most visually striking cables available, and I personally prefer it without the sleeve.

For a nominal fee, a burn-in service is available, allowing customers to select between 100 and 150 hours of burn-in time, which is advisable for achieving optimal performance from the silver.

General thoughts about cables

Audio reviews often exhibit a high level of subjectivity, especially when it comes to cables, which remain a debated topic. Some individuals argue that cables do not create noticeable or scientifically supported differences, while others strongly believe in their effectiveness.

I neither disregard the importance of cables nor accept their influence uncritically. I perform subjective assessments of all cables in my system without utilizing a blind testing method, and at times, I do notice audible differences that can vary from subtle to quite pronounced.

It is crucial to understand that this review is purely subjective and does not have scientific backing or blind testing. The insights shared here are specific to my personal audio setup. Therefore, all listening experiences should be taken with caution, as your results may vary significantly depending on your audio system and individual preferences.

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Listening set-up

The Lavricables Grand XLR interconnects underwent a burn-in period of 150 hours.

The testing setup features Audio Physic Spark stand mount speakers powered by the Lab12 integre4 MK2 - Toroid version integrated amplifier, utilizing Tung Sol KT170 power tubes for this review. The entire system is situated in an acoustically optimized room.

For the digital source, the Volumio Rivo+ transport is connected to the Lab12 dac1 reference, with power conditioning managed by the Lab12 Gordian multifunctional power distributor/conditioner.

Reference cables are from the Oehlbach State of the Art series and I also frequently use cables by Neotech and Signal Projects.

Audio stuff

I tend to be cautious regarding interconnects, as I believe they generally have less impact on the sound performance of an audio system compared to speaker cables. Nevertheless, I often notice subtle sonic variations among different high-quality interconnects. By high quality, I refer to cables that maintain transparency and are not intentionally designed to alter the frequency response of an audio system. Such cables often exhibit unusual electrical characteristics, including capacitance, impedance, and resistance, which can cause them to function as passive equalizers. However, they typically result in a decline in sound quality rather than an enhancement.

The Lavricables Grand XLR interconnect is engineered for optimal transparency, ensuring that it does not alter the frequency response of your audio system. It is not intended to mitigate excessive brightness, enhance bass, or emphasize midrange frequencies etc. This cable should not be mistaken for a passive equalizer while contrary to popular belief regarding silver cables, the Lavricables Grand silver cable does not contribute to a brighter sound or increase energy in the higher frequency range.

Instead, it excels at connecting your audio components with the highest level of fidelity and transparency, allowing you to fully experience their sonic capabilities without introducing any limitations or coloration.

After comparing the Lavricables Grand with my usual interconnects, I found that this cable enhanced the clarity and detail of the audio without introducing a more analytical or clinical sound. While my standard interconnects are already quite proficient in this area, the Lavricables Grand provided an additional layer of clarity and detail that I appreciated. The extent of improvement may vary based on the quality of your interconnects and overall audio setup.

Furthermore, the cable contributed to a greater sense of spaciousness and airiness in the soundstage, enhancing both its width and depth. It also improved imaging, making it slightly more precise and solid compared to my already capable standard interconnects.

I was particularly struck by the enhanced sense of silence provided by the Lavricables Grand, which outperformed my standard interconnects. The Lavricables Grand produced a quieter sound compared to the Oehlbach interconnects, resulting in a deeper, more immersive background.

While the sonic distinctions were not as significant as those I experienced with the Lavricables Grand speaker cables, these interconnects still offered a fresh perspective. They complemented each other remarkably well, leading me to recommend purchasing them as a complete set.

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Conclusion

I am not claiming that the Lavricables Grand XLR interconnects significantly enhanced the sound quality of my system compared to my existing high-quality standard cables. However, they did introduce a pleasing variation that I thoroughly enjoyed, eliminating any desire to switch back to the original cables.

For individuals using entry-level cables, the Lavricables Grand XLR interconnects could provide a substantial boost to their audio system's performance. Conversely, for those who already possess high-quality cables, these interconnects may add a refreshing twist to an already impressive auditory experience.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. You can check configuration options and prices for the cable at Lavricables website.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos

Reviewer at hxosplus
Just bring your coffee
Pros: + Excellent sound for the category
+ Neutral and transparent
+ Competitive technicalities
+ Natural timbre, not much artificiality
+ Plug 'n play
+ In-line microphone and control button
+ Very efficient
+ High quality construction
+ Lightweight and beautiful looking
+ MMCX and 2-pin versions
Cons: - Not as powerful as USB DAC dongles
- No app connectivity
- Slightly heavier than the competition
- No support for DSD decoding
- No volume control buttons
ddHiFi

ddHiFi is a known audio brand recognized for its distinctive and rare audio adapters, along with a range of USB DAC dongles, cables, earphones, and other valuable accessories. All ddHiFi products are very well made and designed with affordable prices.

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ddHiFi M130B

The newest trend in the portable audiophile market is the introduction of USB earphone cables that connect directly to your phone's type-C port, enhancing the audio experience while maintaining a lightweight and compact design. These cables come equipped with either 2-pin or MMCX connectors, ensuring compatibility with a wide range of earphones that utilize a detachable cable system.

ddHiFi stands out as a pioneering brand in this space, having been one of the first to create such cables, like the ddHiFi M120B, a premium USB type-C cable that has recently been upgraded to the M130B version.
The M130B features an advanced DAC/amp chip, the ES9603Q, which significantly outperforms the ALC5686 found in the M120B, delivering 45mW*2/32Ω compared to the latter's 15mW*2/32Ω. Additionally, the M130B has a low power consumption of only 0.03A, making it highly efficient and friendly to battery life.

The ddHiFi M130B is designed for seamless plug-and-play functionality with devices running Android, iOS, Windows, and MacOS that are equipped with a USB type-C input, supporting PCM decoding up to 32bit/384kHz. However, the cable does not facilitate app connectivity or DSP features, unlike the MoonDrop Quark 2.

Incorporated into the cable is an in-line controller featuring a MEMS microphone and a single rounded button, which allows users to answer or end calls and manage music playback, though it does not control volume levels.

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Non Audio stuff

The ddHiFi M130B is a well crafted cable featuring a high-purity OCC core and an OFC shielding layer, presented in a braided design. Measuring 1.20 meters in length, this cable not only has an attractive appearance but is also reinforced with a robust exterior sheath.

It is lightweight and flexible, effectively eliminating any microphonic noise. The USB plug, earphone connectors, and in-line controller are constructed from a high-quality aluminum alloy. The ddHiFi M130B is offered in both 2-pin and MMCX configurations, with the MMCX version being compatible with Sennheiser’s IE series earphones.

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Audio stuff

The ddHiFi M130B is particularly well-suited for earphones that are easier to drive, such as the FiiO FD15, which I have primarily utilized. When paired with more demanding headphones, it tends to clip and distort at higher volume levels.

In terms of audio quality, the performance is outstanding for the category, featuring a sound signature that expertly balances neutrality and transparency while maintaining a rich musicality. The timbre is predominantly natural, with minimal artificiality in the treble, complemented by a vibrant and harmonious mid-range.

The bass response is quick, dynamic, and impactful, showcasing impressive layering and control, provided the earphones are easy to drive. The mid-range is prominent, well-defined, and articulated with remarkable resolution and refinement for its class. The treble is smooth and polite, yet it does not compromise on energy and clarity. Overall, the tonal balance is exceptionally well-executed, and the sound exhibits excellent coherence across the entire frequency spectrum.

The retrieval of details is very good, and the soundstage feels both wide and open, featuring surprisingly satisfying depth and imaging. The overall audio and technical performance of the ddHiFi M130B is highly competitive, matching or exceeding that of full-sized USB DAC dongles in the same category with comparable power output. The M130B complements a range of earphones, regardless of their tuning style, and delivers excellent sound quality across various music genres, from classical to contemporary beats.

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Comparison with the ddHiFi M120B

The ddHiFi M130B significantly outperforms the M120B in terms of sound quality and construction. Additionally, it has a more premium and visually appealing design. With double the power while maintaining energy efficiency, the M130B serves as the ideal upgrade for those who appreciate the M120B but desire enhanced performance across the board. However the M120B is more lightweight and efficient and and can be used with the cable down style.

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Comparison with the Hidizs ST2 Pro

A comparable USB Type-C cable is the Hidizs ST2 Pro, which utilizes the ESS ES9281AC DAC chip in place of the ES9603Q. This chip offers greater power but is less efficient, delivering 70mW*2/32Ω with a power consumption of 0.05A. Priced at $36 (Kickstarter price), the ST2 Pro is more affordable; however, despite its solid construction, it does not quite reach the build quality and aesthetic appeal of the ddHiFi M130B but it is more lightweight.

In terms of sound performance, both cables are relatively similar, with the primary distinction being that the ST2 Pro presents a slightly more energetic and brighter treble compared to the smoother sound profile of the M130B. While the ST2 Pro is marginally better suited for driving more challenging loads, the M130B demonstrates greater efficiency.

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Conclusion

The ddHiFi M130B exemplifies a thoughtfully crafted USB type-C cable, merging outstanding audio performance with superior construction and an elegant design. While it may not deliver high power, its ultra-efficient nature makes it an ideal match for easily driven earphones. This cable serves as an excellent option for those seeking an enhanced audio experience while traveling, all without significantly increasing bulk or weight while also maintaining minimal battery usage from the host device.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the ddHiFi M130B is $109.99 and you can buy it from here.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos

Reviewer at hxosplus
Stylish sound
Pros: + Neutral and balanced tuning
+ Musical and engaging
+ Natural timbre
+ Not much artificiality
+ Great sound cohesion and extension
+ Resolving and transparent
+ Very competitive technicalities
+ Great imaging
+ Well made and beautiful looking
+ Lightweight and comfortable
+ Good passive noise attenuation
+ Easy to drive with good scalability
+ High quality modular cable
+ Plenty of accessories
+ Right price
Cons: - Not strictly reference-neutral tuning
- A little mid-bass coloration
- Average soundstage width and depth
- Slightly lean textures
About Juzear

Juzear is a modest earphone manufacturer based in China, recognized for its Butterfly 61T model. This product gained significant popularity due to its impressive sound quality offered at a competitive price, leading to substantial success in the market.

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Juzear Dragonfly 81T

Juzear is proud to introduce the Dragonfly 81T, a new set of hybrid, multi-driver earphones that builds on the success of the Butterfly model.

The Dragonfly 81T features an impressive 9-driver configuration on each side, which includes a specially designed 10mm dynamic driver complemented by eight high-performance balanced armature (BA) drivers. This setup incorporates four custom BA drivers dedicated to high frequencies and another four for mid-range frequencies, all working in harmony through a combination of physical and electronic crossovers.

To optimize the performance of each driver, Juzear has engineered a high-precision acoustic chamber. Utilizing advanced 3D printing technology, this acoustic cavity is equipped with a smooth lead-pipe that minimizes distortion while enhancing sound transmission efficiency and coherence.

Additionally, the Dragonfly 81T features Juzear’s proprietary micro-perforated pressure relief system. Each earbud is designed with a small vent that regulates air pressure within the cavity and the ear canal, thereby improving sound quality and providing a comfortable fit for the user.

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Non Audio stuff

The design of the Dragonfly 81T is said to draw inspiration from the elegant form of dragonflies; however, it evokes a more traditional Burberry aesthetic. Regardless of the dragonfly theme, the faceplates resemble exquisite jewels, making them a delight to wear and admire.

The ear shells are lightweight and feature a custom-like ergonomic design crafted from a skin-friendly resin material. They provide a secure and remarkably comfortable fit while offering excellent sound isolation. In my experience, the Juzear Dragonfly 81T ranks among the most visually appealing and comfortable earphones I have tested to date.

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The cable and the accessories

The detachable cable features 18 AWG multi-core 6N silver-plated OFC wires arranged in a braided design. It is equipped with 2-pin connectors and comes with an interchangeable 90⁰ angled termination plug, including both 3.5mm and 4.4mm options. The plugs, connectors, and splitter are crafted from high-quality aluminum and reinforced with strain reliefs for added durability. This cable is well-constructed, offering a soft texture that allows for easy bending, while being relatively lightweight and free from friction noise.

Additionally, the package contains a hard carrying case with a side zipper, two sets of silicone ear-tips in three different sizes, and two pairs of memory foam ear-tips.

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Power requirements and associated gear

The earphones feature an impedance of 32Ω and a sensitivity of 117dB, making them easy to drive while remaining relatively unaffected by background noise from the source. Listening evaluations indicate that they perform well across various quality levels and show improved responsiveness to higher-end audio sources. They can be effectively powered by USB DAC dongles such as the iBasso DC07PRO, but their performance is notably enhanced when paired with devices like the Cayin N3 Ultra or the FiiO M23.

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Audio stuff

The text includes comparison notes with the Juzear Butterfly 61T.

The Dragonfly 81T builds on the successful tuning of the Butterfly 61T while taking a slightly different direction with a more reference-oriented tonal profile, all without compromising the musicality that the 61T is known for.

The Butterfly 61T features a warm and smooth sound signature, characterized by pronounced bass and a well-balanced tonal quality, making it suitable for casual listening and to a lesser extent to more critical applications.

In contrast, the Dragonfly 81T is tuned to provide a tonal balance that favors critical listening, yet it remains capable of accommodating casual listening experiences. The primary distinctions lie in the low-end and treble response. The bass of the Dragonfly 81T is tuned to be more neutral, retaining much of the impressive sub-bass extension found in the 61T, while the treble is slightly elevated, resulting in a more vibrant and luminous sound without crossing into harshness or excessive brightness.

The 81T's low-end is characterized by a reduced emphasis on mid-bass, which enhances tonal accuracy and effectively eliminates any mid-range masking effects. It offers impressive extension down to the first octave, with a level of precision that makes it an excellent choice for critical listening. Low-pitched instruments are reproduced with fidelity, maintaining a close adherence to neutrality without significant tonal shifts. While there is a slight pleasing coloration in the mid-bass, the Dragonfly remains convincingly near a reference sound, even compared to more neutrally tuned earphones.

The bass performance is robust and impactful, exhibiting punchiness and dynamism, while remaining fast and controlled without any noticeable reflections. It is tight and precise, offering superior definition and layering than one might typically expect in this category. The 81T's bass is elastic, avoiding a lean or dry quality while still being technically competitive.

The transition to the midrange is exceptionally smooth due to the precise alignment of the drivers and the lack of mid-bass interference. The 81T offers a slightly more balanced and neutral tuning compared to the 61T, maintaining a strong midrange presence while enhancing clarity and articulation on a technical level. The upper mid-range features an added brightness that was absent in the 61T, resulting in a more vibrant character that remains comfortable and non-fatiguing.

The Dragonfly 81T surpasses the 61T in resolution and refinement, presenting a natural and organic timbre that renders both instruments and vocals in a realistic and lifelike manner, free from excessive artificiality. The Dragonfly delivers a harmonious, melodic, and engaging listening experience that fosters a deep connection between the listener and the music.

The treble response is predominantly smooth, lacking harsh peaks, yet it is noticeably brighter and more vibrant than the 61T. Thanks to the effectively designed crossovers, it maintains a cohesive sound rather than feeling disjointed. In comparison to the Butterfly, the Dragonfly offers a more sparkling and radiant auditory experience, excelling in clarity, definition, and detail retrieval.

Overall, the technical performance of the Dragonfly is superior, making it a better choice for critical listening without compromising on timbre quality or musicality. It remains an enjoyable earphone that avoids a clinical or sterile sound, and its timbre is largely free from metallic overtones or the artificiality often associated with “balanced armature” designs.

The soundstage may not be revolutionary within its category, but it offers a commendably wide and spacious experience, featuring respectable depth layering and surprisingly good imaging. While it may not be extraordinary, it adequately captures large-scale compositions without any congestion, providing a satisfactory sense of immersion.

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Conclusion

The Juzear Dragonfly 81T represents a refined and technically superior iteration of the Butterfly, maintaining its musicality and engagement. In a crowded market, it distinguishes itself as a meticulously designed, aesthetically pleasing, and comfortable pair of earphones. Its sound signature achieves an ideal equilibrium between critical listening and casual enjoyment, creating a harmonious auditory experience.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the Juzear Dragonfly 81T is $249.99 and you can buy it from HiFiGo.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos

Reviewer at hxosplus
Best entry level USB DAC dongle
Pros: + Neutral and balanced tuning
+ Excellent technicalities for the category
+ Impactful bass
+ Smooth treble and engaging mids
+ Not much digital glare or artificiality
+ Low power consumption and dead silent
+ Both 3.5mm and 4.4mm plugs
+ Lightweight and compact sized
+ Plug 'n play
+ Excellent build quality
+ Very affordable
Cons: - Low power output
- Not really balanced architecture
- No indicator LED or buttons
- No app connectivity and zero customization options
Kiwi Ears

Kiwi Ears may be a smaller company, yet it has gained significant recognition within the audiophile community due to its highly regarded earphones. Models such as the Kiwi Ears Quintet and Orchestra Lite exemplify their commitment to delivering exceptional sound quality at a reasonable price.

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Kiwi Ears Allegro Mini

Kiwi Ears, in addition to its earphones, offers a portable USB DAC dongle known as the Allegro, which features a distinctive retro design and delivers impressive sound quality for its price.

Following the success of the Allegro, the Allegro Mini was developed with a focus on maintaining sound excellence while providing a more compact and portable option.

The Kiwi Ears Allegro Mini is a small-sized DAC dongle characterized by its lightweight and compact design. It features an integrated USB Type-C plug that connects directly to the host device, eliminating the need for an additional cable. The USB plug is designed to fit phones with protective cases, provided the cases are not excessively thick.

This device is single-ended but offers both 3.5mm and 4.4mm outputs, enhancing compatibility with a variety of earphones without requiring an adapter.

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Technical stuff

The Allegro Mini features a custom designed DAC/amp chip that is not disclosed and supports PCM decoding up to 32bit/384kHz and DSD128. It offers plug-and-play compatibility with devices running Android, iOS, Windows PC, and MacOS, provided they have a USB type-C port.

With a power output of 30mW*2/32Ω, the Allegro Mini is adept at driving sensitive earphones such as the Kiwi Ears Quintet while it can easily clip when handling more demanding loads. The device operates quietly and is effectively shielded from electromagnetic interference (EMI). Power consumption is as low as 0.02-0.03A making it especially efficient.

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Non Audio stuff

The Allegro Mini is constructed with a high-quality aluminum-alloy body, offering both durability and an upscale appearance. Its design is minimalistic, characterized by a sleek rectangular shape with rounded corners and a convenient thumb curve located at the center of the upper surface.

The device lacks a status indicator LED and does not include any physical buttons for volume or playback control. It serves as a straightforward DAC, devoid of additional features like gain settings, digital filters, or digital signal processing.

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Audio stuff

The Kiwi Ears Allegro Mini, building on the foundation of the Allegro, features a neutral sound signature characterized by outstanding transparency, linearity, and clarity within its category.

The technical performance is exceptional, and when paired with suitable, easy-to-drive earphones, the Allegro Mini delivers tight, controlled bass that is both dynamic and impactful, showcasing impressive layering and definition. While the textures may not be overly heavy, they also do not come across as lean or dry, effortlessly extending down to the first octave.

The mid-range performance of this affordable DAC is impressively detailed and refined, offering exceptional clarity and articulation. The timbre is notably natural, avoiding any artificiality, and features rich, vibrant harmonies.

The treble is both extended and lively, yet it avoids a bright or metallic quality. In contrast, the Allegro presents a slightly brighter sound than the Mini, which is characterized by a smoother and more enjoyable tone. Detail retrieval and definition are commendable for this price range, while the soundstage is expansive and open, providing accurate imaging.

The Kiwi Ears Allegro Mini does not come across as clinical or sterile; instead, it delivers a melodious and engaging listening experience that suits a wide variety of music genres and pairs well with different earphones, provided they are not overly demanding in terms of power.

Comparison with the ddHiFi TC44Pro

The ddHiFi TC44Pro, priced at $79.99, features a design akin to the Kiwi Ears Allegro Mini, though it is somewhat more compact. It boasts a true balanced architecture with dual CS43131 DAC chips, capable of delivering 120mW*2/32Ω of power.

In terms of sound performance and technical capabilities, the ddHiFi TC44Pro slightly outperforms the Allegro Mini and is capable of driving more demanding loads. However, it comes at a premium of $56 extra, consumes significantly more power (0.08A compared to 0.02A), and lacks the added convenience of an extra 3.5mm output.

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Conclusion

The Kiwi Ears Allegro Mini presents an exceptional value proposition. Priced at just $24, this compact and well-crafted USB DAC dongle delivers audio performance that exceeds expectations for its cost.

Despite its budget-friendly price, the Allegro Mini offers sound quality that rivals much pricier offerings and can pair well with much more expensive earphones, provided they are easy to drive, making it a highly recommended choice.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the Kiwi Ears Allegro Mini is $24 and you can buy it from here.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos

Reviewer at hxosplus
An upgrade you must do
Pros: + Improves technicalities
+ Doesn't affect timbre quality
+ Higher resolution and refinement
+ Immersive soundstage
+ Imaging accuracy
+ Detail retrieval
+ More silence
+ For the Hifiman Serenade and EF400 models
+ Very affordable and cost effective upgrade
Cons: - Can't do-it-yourself
- Only available for EU
- Minimal loss in texture weight
The Hifiman Hymalaya DAC module

Hifiman is a brand primarily recognized for its extensive selection of planar magnetic headphones; however, it also produces high-quality electronic components, such as the EF400 and the Serenade DAC/amps. What sets Hifiman apart from many competitors is its proprietary R2R DAC module, known as the “Hymalaya,” which is utilized instead of conventional D/S DAC chips. This module is currently in its second generation.

The Hymalaya DAC module is essentially a compact R2R DAC constructed from a significant number of discrete resistors, each with a precision of 0.01%. The second generation of this module features a new FPGA that offers enhanced computing capabilities compared to its predecessor. This FPGA operates with firmware that incorporates a new algorithm, resulting in improved accuracy and a 16% reduction in power consumption relative to the first generation. Additionally, it is designed with twice the number of resistor arrays compared to the initial version, leading to an overall efficiency increase of 20%.

The Hymalaya upgrade program

The second generation of the Hymalaya Pro module is available in three distinct versions: Pro Gold, Pro Silver, and LE, ranked from highest to lowest in terms of measured total harmonic distortion (THD) and dynamic range. The LE version is utilized in the EF500 DAC/amp, the Pro Silver is found in the EF600 and the Serenade, while the Pro Gold is designated for the flagship model, the EF1000.

Hifiman has introduced an upgrade program specifically for the Serenade and EF400 models, available exclusively to customers in Europe. Owners of these devices can send them to Hifiman for an upgrade to their preferred Hymalaya modules, after which the units will be returned with an extended one-year warranty.

The upgrade options include enhancing the Pro Silver modules of the Serenade to Pro Gold for $149, and upgrading the first generation modules of the EF400 to Pro Silver for $149, or to Pro Gold for $299.

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A DIY adventure

Disclaimer: Hifiman does not officially support the DIY installation of the Hymalaya modules; the only authorized method for upgrading is to send your device to the company.


In summary, after determining that the Hymalaya DAC modules of the Hifiman Serenade could be exchanged without soldering, I persuaded Hifiman of my capability to undertake the upgrade independently. This approach was essential for conducting a valid comparison, as sending the Serenade for the upgrade and awaiting its return would take approximately a month, a duration sufficient to diminish any acoustic memory.

Since this process is not officially supported by Hifiman, I will refrain from providing a comprehensive description. It is worth noting that accessing the interior of the Serenade and removing the circuit board can be quite challenging. While individuals with the necessary skills and caution may succeed, there remains a risk of damaging the board or severing a connector cable.

Once the internal components of the Serenade are removed, replacing the two DAC modules is relatively straightforward, as they are connected to the main board without solder, similar to socketed op-amps. The only requirement is to remove the security screw from each module and then replace it, ensuring that the small indicator dot's color matches. After reassembling everything, the task is complete.

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The EF400 case

The Hifiman EF400 is notably straightforward to disassemble, yet upgrading it presents significant challenges. The first-generation Hymalaya module is designed to be socketed to the board, allowing for easy removal. In contrast, the installation of the Pro modules necessitates the removal of the existing sockets and the soldering of four new ones (or the modules directly) at the designated locations shown in the accompanying photograph. Consequently, I was unable to carry out the upgrade and assess the sound quality.

Nevertheless, based on the sonic enhancements that the Pro Gold Hifiman Hymalaya modules provided to the Serenade, I am confident that upgrading the considerably less advanced first-generation modules of the EF400 would result in even more substantial improvements in sound quality.

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The methodology

It is evident from the aforementioned upgrade procedure that conducting a side-by-side comparison or A/B testing is not feasible.

My approach involved using the Serenade for several days to familiarize myself with its sound signature. On the designated day, I attentively listened to a carefully curated selection of well-known tracks and documented my observations. Subsequently, I swapped the modules and repeated the listening process immediately. Finally, I dedicated a few more days to enjoying leisure listening with the Serenade and the newly installed modules.

For the purpose of comparative evaluation, I utilized the Hifiman HE1000 Stealth headphones paired with a Lavricables upgraded cable.

Audio stuff

The Hifiman Serenade is a remarkable DAC/amp that stands out for its exceptional sound quality, making it one of my preferred choices. It seamlessly blends a natural and organic timbre with impressive technical performance and transparency for an R-2R DAC. The sound profile is reminiscent of analog systems, rich in musicality and devoid of any digital artifacts. Its melodious and engaging nature exemplifies the distinctive R-2R sound signature while maintaining high technical standards.

Replacing the Pro Silver modules with the Pro Gold does not result in drastic changes; instead, it offers a series of subtle yet noticeable enhancements that collectively elevate the overall audio experience.

One notable improvement is the increased silence. In the already quiet Serenade, the music's background becomes even darker, allowing the most intricate details to surface naturally, significantly enhancing the sense of realism. However, it is important to note that using overly sensitive headphones may reveal a slight hum from the transformer.

The enhanced version of the Serenade exhibits increased transparency, precision, clarity, and definition. It delivers a more refined and resolving sound, allowing listeners to delve deeper into the recording. The soundstage broadens, becoming more holographic and immersive, with additional layers of depth and improved imaging accuracy.

These technical improvements are achieved without compromising the remarkable timbral realism and the highly regarded musicality of the Hifiman Serenade. The sound maintains its organic and analog-like qualities, ensuring that the Pro Gold Hifiman Hymalaya modules do not impart a clinical tone or any form of digital artificiality. On the contrary, the Serenade becomes even more convincing and lifelike following the upgrade.

One notable consequence of switching to the Pro Gold modules is a slight reduction in sound density or note weight, as one might describe it. The textures may appear somewhat drier, losing a degree of their elasticity and lushness, although these differences are relatively minor. Nevertheless, for those who prioritize these attributes in their listening experience and prefer a denser, more full-bodied sound, it may be advisable to remain with the Pro Silver modules.

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Conclusion

The Hifiman Himalaya upgrade program presents an affordable and cost effective way to improve the audio quality of the Hifiman Serenade and the EF400. By replacing the Pro Silver modules with Pro Gold modules, the Serenade achieves the pinnacle of its technical capabilities while maintaining, if not enhancing, its natural and organic sound. If you reside within the EU, where this service is offered, do not hesitate to take advantage of this exceptional chance to elevate the sonic performance of your Serenade or EF400.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. You can learn about the Hifiman Hymalaya upgrade program and the prices by clicking here.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.



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Ichos

Reviewer at hxosplus
USB type-C cable which DAC/amp
Pros: + Available with or without earphones
+ The cable is neutral sounding with good technicalities
+ Powerful for the size
+ Low power consumption
+ In-line controls and microphone
+ 2-pin and MMCX versions
+ 32bit/384kHz PCM, DSD128 and 8X MQA
+ Soft and well made cable
+ LED indicator in the plug
+ Affordable

+ The earphones have plenty of bass that is not overwhelming
+ Decent tonal balance
+ They are lightweight and comfortable
+ Well made and affordable
Cons: - Regular prices are not yet determined

- The cable looks a bit fragile
- You can't control the volume
- No DSP features

- The earphones are only suitable for casual listening
- Average technicalities and resolution
- Way too colored tuning
(The rating is for the cable alone)

Hidizs is a reputable audio brand recognized for producing high-quality earphones and USB DACs that offer an impressive price-to-performance ratio while remaining affordable. Notable products such as the MP143 and the S8 Pro Plus have garnered significant acclaim within the audiophile community.

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Hidizs ST2 Pro Nebula USB type-C cable

Hidizs has recently introduced the ST2 Pro Nebula, a USB Type-C cable that can be purchased either as part of an earphone bundle or separately in 2-pin and MMCX versions. Initially, the ST2 Pro will be available on Kickstarter, followed by general retail availability.

The Hidizs ST2 Pro Nebula is an earphone cable featuring a Type-C connector along with 2-pin or MMCX plugs. It incorporates the ESS ES9281AC PRO DAC/amp chip, which is capable of handling sampling rates up to 32bit/384kHz PCM, DSD128, and 8X MQA unfolding. The ST2 Pro has a power output of 70mW*2/32Ω and operates with a remarkably low power consumption that I measured as just 0.05A, ensuring high efficiency.

This cable is compatible with a variety of devices, including Android, iOS, and any USB Type-C-enabled systems such as Windows PCs or Macs. The wired nature of the connection guarantees zero latency, making it ideal for gaming and watching movies.

Additionally, the ST2 Pro features a convenient in-line control button equipped with an HD microphone for phone calls. Users can utilize the button to answer or end calls and manage music playback (one click for play/pause and double click for the next track), although volume adjustment is not supported.

IMG_20241213_155857.jpg


Design and build quality

The cable is equipped with an aluminum alloy USB connector that features transparent windows on both sides, allowing visibility of the internal PCB. An LED indicator for sampling rates illuminates red for PCM decoding at 44.1-48kHz and blue for PCM rates ranging from 88.2-384kHz or for native DSD playback. While the in-line control and splitter are constructed from aluminum alloy, the earphone connectors are made of plastic. The USB connector may become slightly warm during use, but it does not reach excessive temperatures.

Measuring 1.2 meters in length, the cable incorporates high-purity, oxygen-free copper wires, which are tightly encased in a woven textile material to enhance durability and flexibility. This cable is well-constructed, being soft and lightweight at 16 grams, and it produces minimal microphonic noise, although it may appear somewhat delicate. The ST2 Pro is offered in silver-gray or black-blue color options.

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The bundled earphones

The Hidizs ST2 Pro Nebula earphones are equipped with a specially designed 10mm high-performance dual magnetic circuit dynamic driver, featuring a PU+PEEK composite diaphragm. These earphones are calibrated according to the H-2019 target curve. The ear-shells are constructed from a skin-friendly resin compound, complemented by aluminum alloy faceplates that prominently display the Hidizs logo.

Designed with ergonomics in mind, the ear-shells boast a custom-like fit and a lightweight design (7g each), ensuring a comfortable and stress-free listening experience while providing effective passive noise isolation. The earphones are offered in both semi-transparent black and fully transparent variants.

IMG_20241213_160115.jpg


Accessories

The ST2 Pro Nebula comes with a handy carrying pouch and a USB type-C to A adapter plus three sets of silicone ear-tips for the version with the earphones.

Audio stuff - Cable alone

The ST2 Pro cable possesses sufficient power to effectively drive sensitive earphones, such as the Hidizs MP143 or the Dunu Kima 2, which I utilized during my assessment.

This cable features a neutral and balanced sound signature, enhanced by a slight touch of brightness. It is capable of delivering exceptional performance for all entry-level earphones and serves as an excellent alternative to portable USB DAC dongles, offering a more compact and lightweight solution while consuming significantly less power.

Equipped with the ES9281AC DAC chip, this cable provides superior sound quality in comparison to the standard codecs found in most similar products. The audio output is characterized by clarity and transparency, featuring deep and impactful bass, a melodious mid-range, and extended treble. The technical performance is commendable for a device of this nature, showcasing controlled low frequencies, well-defined mids, and energetic treble that avoids being overly sharp or harsh.

Although I would not suggest this cable for critical listening or for use with high-end earphones, it represents an excellent option for individuals seeking quality sound on the move without the inconvenience of a USB DAC dongle.

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Audio stuff - Cable & bundled earphones

The ST2 Pro earphones, paired with a USB Type-C cable, feature the widely appreciated tuning that aligns with the popular H-2019 target curve. This entry-level earphone set is crafted for on-the-go listening across a variety of musical genres, and its tuning approach can be deemed effective.

The bass response is prominent and robust, showcasing excellent sub-bass extension along with a substantial mid-bass presence. Importantly, it avoids overwhelming the mid-range, maintaining a satisfying physical impact that is likely to resonate with fans of mainstream music. While the texture and resolution are adequate for this category, the tuning prioritizes enjoyment over tonal precision.

In terms of mid-range performance, it is not significantly recessed compared to typical V-shaped tunings, allowing for a clear and present sound with sufficient resolution. Vocals and instruments are rendered in a realistic and harmonious manner, exhibiting satisfactory timbre accuracy. However, the textures may lack refinement, resulting in a sound that feels somewhat flat and less emotionally engaging. Nonetheless, such critiques may be considered somewhat unjust given the earphones' intended purpose and market positioning.

The treble, while somewhat limited in resolution and definition, effectively integrates with the overall sound profile. It offers a lively and extended quality with a hint of brightness, without becoming sharp or fatiguing. The sound remains vibrant, avoiding any dullness, and the timbre does not exhibit excessive artificiality or lack of weight.

Overall, the Hidizs ST2 Pro presents a tuning that is well-suited to its intended use, complemented by satisfactory technical performance. The soundstage is adequately wide and spacious, providing good imaging capabilities. Although it may lack grandeur or depth, it avoids any sense of congestion or claustrophobia.

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Conclusion

The Hidizs ST2 Pro Nebula cable is sufficiently well performing to establish its presence in a highly competitive market. This cable serves as an outstanding option for individuals seeking to enjoy their preferred earphones while on the move, without significantly increasing the bulk associated with their smartphone.

Furthermore, for those who do not yet possess a quality pair of earphones or are in search of an additional set, the Hidizs ST2 Pro Nebula cable can be purchased alongside its compatible earphones.

In any case, the Hidizs ST2 Pro delivers very good sound quality and superior craftsmanship at a reasonable price point.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The Hidizs ST2 Pro is available through Kickstarter and regular sales will follow.

The prices are ST2 PRO Nebula (Super Early Bird): $39.00 (Limited to 500 units) - ST2 PRO Nebula (Early Bird): $49.00 - ST2 PRO Nebula USB-C 2-pin or MMCX earphone cable only (Early Bird): $36.00.

Regular prices will be announced after the Kickstarter campaign ends.

To purchase please use the Kickstarter
link.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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S
SatorArepo
Tnx for this;)

Ichos

Reviewer at hxosplus
Mini Power Bank for FiiO KA17
Pros: + Designed to match the FiiO KA17
+ Makes the FiiO KA17 battery powered
+ Battery duration for the size
+ Noise free
+ Lightweight and compact sized
+ Doesn't add much bulk
+ Well made
Cons: - The leather case doesn't come as a standard accessory
- Can't charge while plugged in the FiiO KA17
The FiiO ESTICK is a compact power bank specifically designed for use with the KA17, which is FiiO's flagship portable USB DAC dongle. This device complements the KA17 seamlessly, converting it into a battery-operated USB DAC dongle that operates independently of the host device's power supply.

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For those who may not be acquainted with the FiiO KA17, it is important to note that it is equipped with two USB Type-C ports. One of these ports serves the conventional purpose of connecting to various devices, such as smartphones, while the orange port located on the side is specifically intended for connection to an external power supply. When an external power supply is linked to this port, the KA17 is capable of delivering a greater power output without depleting the battery of the connected device. The FiiO ESTICK is intended to connect to this port to provide power to the KA17.

The FiiO ESTICK transcends the typical power bank, as it is meticulously engineered for audio applications. Its circuitry incorporates low ESR tantalum capacitors, which guarantee a stable power supply with minimal ripple. The device features a battery with a capacity of 1100mAh, offering approximately 4-5 hours of playback time when utilized in desktop mode and through the balanced output. Additionally, users can prolong battery life by turning off the desktop mode when it is not required.

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Design

The ESTICK is a compact power bank with dimensions of 64x23.5x13mm, allowing it to align closely with the FiiO KA17 in both depth and height, while adding minimal width and weight, as it weighs approximately 31g. When attached to the KA17, the combined dimensions are approximately 51x64x13mm, with a total weight of 65g, or 78g when including the leather case.

The operation of the ESTICK is straightforward; it features a power on/off button and four LED indicators to display battery status. Users can keep the ESTICK connected to the FiiO KA17 and utilize the button to turn it on or off as needed.

Charging the ESTICK

The ESTICK features a male USB type-C connector exclusively, as there was insufficient space to incorporate an additional USB type-C charging port. To charge the device, it must be detached from the KA17 and connected to a USB charger. The package provides a USB type-C female to USB-A male adapter.

While some users may express dissatisfaction with this charging method, it is important to recognize that FiiO aimed to create a device that balances minimal size and weight with maximum battery capacity. The inclusion of a separate USB charging port would have necessitated either a larger chassis or a reduced battery capacity.

IMG_20241211_144954.jpg


The leather case

Upon connecting the ESTICK to the FiiO KA17, you may observe a slight wobble when gently moved with your fingers, which poses a risk of inadvertently bending or damaging the USB plug. To mitigate such risks and safeguard the devices, it is advisable to utilize either the magnetic bundling kit (FiiO MagClip) or, preferably, the custom case designed to accommodate both items.

This premium case, crafted from genuine leather, is available for purchase separately at a price of $15. It offers a snug fit, and the most effective method for extracting the devices from the case is to use the USB cable of the KA17 as a lever to assist in removal. In my view, this case is indispensable and should have been included as a standard accessory, even with a modest increase in the overall price.

IMG_20241211_145313.jpg


Conclusion

The FiiO ESTICK is a cleverly engineered device that connects to the FiiO KA17, converting it into a battery-operated USB DAC/amp while maintaining a minimal increase in size and weight. It is a very affordable and essential accessory for all FiiO KA17 users.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the ESTICK is $19.99 and you can buy it from here.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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M
Machese
do you know when it will be available again in their aliexpres store?
Ichos
Ichos
Unfortunately no. You may ask @FiiO for availability.

Ichos

Reviewer at hxosplus
Divine Spirit
Pros: + Neutral and balanced
+ Natural timbre
+ Excellent technicalities
+ Transparency and fidelity
+ No digital artificiality
+ Holographic soundstage
+ Excellent DAC performance
+ Neutral preamplifier
+ Powerful amplifier
+ Noise free background
+ Colour LCD display
+ Network streamer
+ Excellent build quality
+ Compact sized
Cons: - No remote control
- No dedicated application
- High voltage output might cause overdrive
- Spotify and Tidal connect
- Gapless playback doesn't work well
- No wireless connectivity
- No line input
Yulong Audio

Yulong Audio is a Chinese producer renowned for its high-end audio equipment, focusing on all-in-one solutions designed for home use. This brand does not engage in the production of numerous devices; rather, its catalog features a limited selection of carefully curated products. Among these is the entry-level model, the Aurora, which I have previously reviewed, as well as the newly introduced Asura, currently under evaluation in this article.

IMG_20241030_162604.jpg


Yulong Asura

The Yulong Asura is an all-in-one audio solution that combines a digital-to-analog converter (DAC), a network streamer, a headphone amplifier, and a preamplifier within a single unit. Both the headphone amplifier and the preamplifier utilize discrete transistor designs, eschewing the use of operational amplifiers.

At the heart of the decoding process is the premium AK4499EX paired with the AK4191 DAC chip from AKM, which is supported by an ADM7150 low voltage regulator. The Asura operates on a custom-developed FPGA software that significantly improves the quality of the digital signal. Input signals are managed by two femto-second crystal oscillators, which offer dual or single clock modes selectable by the user.

The high-speed USB interface accommodates sampling rates of up to DSD1024 and 32bit/1536kHz PCM, while the coaxial input is restricted to 24bit/384kHz and DSD128. The network and optical inputs support up to 24bit/192kHz and DSD64.

Additionally, the Asura features a linear power supply that utilizes a 50W toroidal transformer from Noratel. Local DC-DC regulated power supplies are employed for all critical components within the circuit.

More information

IMG_20240604_171903-wm-51020.5_watermarked.jpg


DAC mode

This mode operates solely in decoding, with the headphone amplifier and volume control turned off, allowing the signal to be output directly from the decoder. The DAC function is designed for connection to headphones, integrated amplifiers, or powered monitors that feature their own volume control. The output level of the DAC is set at a fixed 3V for single-ended outputs and 6V for balanced XLR outputs. It is important to note that the output voltage exceeds the industry standard of 4V, necessitating caution during equipment matching to prevent possible input overdrive.

Headphone amplifier mode

The Yulong Asura headphone amplifier features a fully balanced, discrete architecture that operates in pure class A mode, delivering an impressive output of 5W at 32Ω, which is sufficient to drive a wide range of headphones. It offers multiple output options, including 4-pin XLR, 4.4mm balanced, and 6.35mm single-ended connections, enhancing its versatility.

While the amplifier does not include a gain setting, it utilizes an analog volume control that is digitally calibrated in 99 steps, with increments of 1dB. This allows for precise matching with various headphone impedances, including sensitive models, minimizing the risk of sudden loudness. Additionally, channel balance remains excellent even at the lowest volume levels.

The amplifier's robust power enables it to drive most headphones available, including challenging models such as the Hifiman Susvara, Hifiman HE1000 Stealth, and Sennheiser HD660S2, which were primarily used during the review. The noise floor is remarkably low, making it suitable for use with sensitive earphones like the FiiO FA19. As the class A amplifier generates some heat, it is advisable to position the Asura in a well-ventilated space.

Preamplifier mode

In this configuration, the internal signal is routed through a discrete, high-current preamplifier, enabling the device to interface with power amplifiers or powered monitors that lack independent volume control. This preamplifier is of superior quality, offering a maximum output level of 6V for RCA connections and 12V for XLR connections.

The audio performance is remarkable, attributed to the preamplifier's exceptional transparency, which does not impart any coloration to the sound. This allows users to fully appreciate the sonic characteristics of the digital-to-analog converter (DAC) without any additional sound processing.

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The network streamer

The embedded network streamer is constructed on a dual-core CPU board featuring 512Mb of RAM and a gigabit network port, operating on a proprietary Linux-based operating system. Notably, the Asura utilizes the slave I2S port of the CPU for internet streaming, in contrast to conventional internet streaming, which predominantly relies on the master I2S port. When the master I2S port is employed, the internal clock of the CPU supplies the master clock for the audio signal. However, the performance of this clock is inadequate, making the slave I2S mode advantageous as it leverages the master clock signal produced by the synchronized local low-noise audio oscillators managed by the FPGA phase lock loop.

The streamer is compatible with AirPlay, DLNA, and Roon bridge music playback modes. Yulong has not created a dedicated Android application, so the most effective method for controlling music playback is through the widely recognized BubbleUPnP application, available for download on Android devices. iPhone users can utilize AirPlay for similar functionality.

The application promptly recognized the streamer without requiring additional actions, demonstrating speed and responsiveness without lag. It supports bit-perfect playback; however, it does not offer Tidal or Spotify “connect,” and gapless playback is inconsistent and performs poorly.

Connectivity

The Yulong Asura facilitates network streaming via a LAN port and is equipped with USB, coaxial, and optical digital inputs. It provides analog signal output through both balanced XLR and unbalanced RCA connections, allowing for simultaneous connection of both types. Additionally, the headphone amplifier accommodates balanced 4-pin XLR and 4.4mm outputs, along with a 6.35mm single-ended output.

Non Audio stuff

The Asura is a compact, low-profile device designed to seamlessly integrate into your desktop or HiFi rack, depending on the intended use. Its robust full aluminum casing is expertly crafted and features four anti-vibration feet for stability. The Asura boasts a sleek matte finish, available in black, silver, and red.

Prominently positioned in the center of the faceplate is a large, true color LCD screen that provides information on the current playback status and facilitates navigation through the configuration menus. On the right side, there is an aluminum multifunction knob, while the left side is equipped with three headphone outputs.

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User interface

The device is controlled via a multifunction knob in conjunction with an LCD screen that presents the configuration menus. A brief press of the knob allows users to cycle through four quick access menus located at the bottom of the screen, enabling the selection of the preferred digital input, output mode, low pass filter, and clock operating mode (single or dual).

A prolonged press on the knob grants access to the comprehensive configuration menu, where users can make various detailed adjustments. During playback, the screen can showcase either a vintage-style two-channel VU meter, a spectrogram, or can be turned off entirely.

Observant readers may have noticed what appears to be an infrared sensor, as the menu features an IR setting. This sensor is absent from several promotional images and seems to have been incorporated at a later stage. Nevertheless, a remote control is not included, and Yulong has not provided any guidance on the use of an adjustable remote control.

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Audio stuff

The Yulong Asura features a high-quality DAC section that delivers outstanding audio performance, distinguished by a balanced sound signature that harmoniously blends musicality with sonic fidelity and technical precision.

The audio output is remarkably clear and transparent, showcasing industry-leading definition and separation while maintaining a rich and harmonious quality. The treble is well-extended, slightly bright but not harsh or tiring, revealing intricate details without coming across as overly analytical or lifeless.

The Asura exhibits tonal accuracy with a natural and organic timbre, devoid of digital artifacts. It offers a wide range of harmonic richness, presenting a colorful and realistic sound, particularly in the mid-range, which is both expressive and melodic.

The Yulong Asura boasts excellent resolution and full-bodied yet refined textures across the entire frequency spectrum. Its technical performance is exceptional for its class, featuring rapid transients and a bass response that is tight, controlled, impactful, and elastic, free from any dryness.

The soundstage presents a three-dimensional holographic quality that is particularly immersive when utilizing the XLR outputs. It offers a broad and expansive feel, characterized by satisfying depth layering, a solid central image, and precise spatial positioning. The Asura demonstrates remarkable capability, and when paired with an appropriate amplifier, it can create an illusion where the speakers seem to vanish.

The preamplifier exhibits excellent transparency, effectively performing its function without imparting any distinct sonic traits, thereby ensuring that the audio quality from the DAC section remains intact. Similarly, the headphone amplifier is notably neutral, though it tends to introduce a slight enhancement in the treble frequencies, resulting in a more vibrant and dynamic listening experience without crossing into excessive brightness.

Comparison with the Hifiman Serenade

The Hifiman Serenade is a comprehensive all-in-one device featuring an integrated network streamer that utilizes R2R DAC modules for audio decoding, rather than a traditional D/S chip. Recently, Hifiman has reduced its price to $999, making it $100 less than the Asura.

Both devices are compact, although the Asura is more suited for desktop applications. The primary distinction in connectivity is that the Serenade includes an additional RCA input, allowing it to function as a line headphone amplifier.

The Asura offers more sound customization options, a larger color display, and supports higher sampling rates. Its headphone amplifier delivers 1000mW more power than that of the Serenade (5W/32Ω compared to 4W/32Ω) and operates more quietly with sensitive earphones. In contrast, the Serenade's network streamer is more advanced, supporting Tidal Connect and true gapless playback.

In terms of sound quality, the Serenade presents a warmer tone with a more natural and lifelike timbre. It offers fuller textures and a more immersive listening experience; however, it lacks the transparency of the Asura, which excels in technical performance and precision. Upgrading the Serenade with the Hymalaya Pro Gold modules for an additional $149 can narrow this gap, yet the Asura will still maintain its superiority in technical aspects. Nevertheless, the enhanced Serenade will come remarkably close while preserving its organic and analog-like sonic qualities.

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Conclusion

The Yulong Asura is a remarkable all-in-one device that delivers an impressive audio experience across all its operational modes. It provides outstanding sonic performance at a competitive price point and features a convenient network streamer that adds to its overall value.

Well-constructed and compact, the Yulong Asura is an excellent choice for those seeking a desktop-friendly all-in-one solution. Its sound signature effectively blends timbral authenticity with technical excellence, resulting in an audio quality that elevates it beyond the MidFi category.

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The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the Yulong Audio Asura is $1100 and you can buy it from Shenzhen Audio.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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T
tesarpa
Does it get really hot, subjectively? I mean temperature, not sound :wink:
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Ichos
No it doesn't get hot to the touch. Only warm

Ichos

Reviewer at hxosplus
The Wave*
Pros: + Balanced and neutral tuning
+ Tonal accuracy and coherency
+ Natural and organic timbre
+ Sub-bass extension
+ Bass technicalities
+ Lush mid-range and smooth treble
+ Spacious soundstage with good imaging
+ The perfect all-rounder
+ Great looks and well made
+ Comfortable to wear
+ Modular cable of the highest quality
+ Generously accessorized
+ Affordable with excellent price to performance ratio
Cons: - Not the last word in treble extension
- Not the most technical performance
- Lean textures and flat soundstage
- The limited edition is sold out
*Kima (κύμα ) at Greek means the wave

Dunu

Dunu has established itself as a leading brand in the HiFi audio sector, becoming synonymous with the Chi-Fi movement and pioneering the production of high-quality earphones at accessible prices. I will always remember the excitement I felt when I purchased the Dunu Titan T1, my first pair of premium earphones from China.

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Dunu Kima 2

In 2022, Dunu introduced the Kima earphones, which achieved significant acclaim for their exceptional sound quality at a reasonable price point. The company has now launched an enhanced version of this successful in-ear monitor, known as the Kima 2. This new model offers substantial upgrades over its predecessor, featuring a state-of-the-art DLC composite dome dynamic driver and a more robust magnetic architecture.

Dunu has incorporated the same magnetic design found in their premium Falcon Ultra IEMs into the Kima 2. Additionally, the tuning of the Kima 2 is based on the highly regarded limited edition Vernus IEMs, which garnered considerable attention from audiophiles. Dunu has refined this tuning profile to further enhance the performance of the Kima 2.

The two versions

The Dunu Kima 2 was introduced in two distinct variants: a standard model and a limited edition, which is restricted to 999 units. While both variants share identical tuning characteristics, they are differentiated by their finishes and accompanying accessories.

The limited edition features a luminous green hue with mirror-finished ear shells, contrasting with the smooth-matte silver finish of the standard model. The accessories are largely the same, with the exception of the carrying case; the limited edition comes with a high-quality pouch bag, whereas the standard version is packaged in a classic-style carrying case with a side zipper. Both models are available at a price of $119.99.

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Non Audio stuff

The ear shells are constructed from durable stainless steel, utilizing a sandblasting technique for the standard version and a mirror-finishing process for the limited edition. The faceplates are designed with a multi-faceted cut that creates a captivating interplay of light and shadow, which is particularly pronounced in the limited edition.

The limited edition boasts a more extravagant appearance, likely to draw significant attention, while some individuals may prefer the understated elegance of the standard version. It is also important to note that the mirror-polished surfaces of the limited edition tend to attract fingerprints, necessitating regular maintenance. The Kima 2 is exceptionally crafted, and its quality greatly exceeds its reasonable price.

The ear-shells are designed to be both compact and lightweight, featuring a shallow contour that, when paired with the moderately extended sound tubes, ensures a comfortable and secure fit. Users can enjoy wearing the Kima 2 for extended periods without experiencing any discomfort, and the passive noise isolation is notably effective, particularly when utilizing the Dunu S&S ear-tips.

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Cable and accessories

The cable accompanying the Kima 2 is among the finest I have encountered, regardless of the earphones' price point, and I would willingly invest $119.99 solely for the cable. It is constructed with four cores of mono-crystalline copper and silver-plated mono-crystalline copper wires, encased in a nylon shock-absorbing sleeve that enhances both durability and aesthetics.

This cable features a metallic splitter and a 2-pin interface with recessed sockets, ensuring added durability and a secure connection. Additionally, it incorporates Dunu’s patented Q-Lock Mini interchangeable termination plug system, which includes two plugs: 4.4mm and 3.5mm. The cable is designed for excellent handling, remaining tangle-free, lightweight, and compact, while also minimizing microphonic noise.

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The limited edition is accompanied by a premium carrying pouch-bag, while the standard version features a side zippered carrying case. Additionally, both versions are supplied with a smaller carrying pouch, a shirt clip, a cleaning brush, and four varieties of ear-tips, as depicted in the accompanying image. This comprehensive bundle is seldom available at such a competitive price.

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Drivability

The Dunu Kima 2 features impedance and sensitivity ratings of 20Ω and 108dB/mW, respectively, making it relatively easy to drive and less susceptible to source noise. It performs adequately with USB DAC dongles and demonstrates significantly improved performance when paired with higher-quality sources such as the FiiO M23 and the iBasso DX180, which were primarily utilized during the review.

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Listening impressions

Upon first listening to the Kima 2, the term "balanced" immediately comes to mind, and this initial impression only intensifies over time. The Kima 2 exhibits nearly flawless tuning, featuring a neutral low-end, a prominent mid-range with a slight emphasis on the upper mids, and a treble that is both smooth and vibrant. The sound is distinguished by remarkable tonal accuracy across the entire frequency spectrum, accompanied by a timbre that is strikingly natural and lifelike.

The tonal coherence of the Kima 2 is exceptional, surpassing what multi-driver configurations within the same category can aspire to achieve. Its sound possesses an organic and lifelike quality, devoid of any discernible artificiality. The Kima 2 is rich in vibrant harmonies, with music flowing effortlessly like spring water; voices resonate authentically, and instruments are rendered with remarkable realism. This creates a profound connection for the listener, who feels immersed in the music as if participating in a live concert rather than merely listening through earphones.

Moreover, the overall technical performance is more than adequate for discerning listeners, while the Kima 2 also delivers an enjoyable and satisfying experience across various musical genres. It stands as a versatile earphone that is likely to be appreciated by a wide audience, except for those who favor overly exaggerated or excessively mainstream sound profiles.

The low-frequency response is optimally tuned, featuring commendable sub-bass extension and a balanced bass profile that avoids any pronounced mid-bass enhancement or drastic tonal alterations. The inherent tonal quality of all lower-pitched instruments is preserved, and the transition to the mid-range occurs smoothly, free from any additional coloration of the sound.

The bass performance is distinguished by remarkable clarity and layering, even when handling the most challenging tracks within this category. It is characterized by speed, precision, and control, devoid of any signs of bloating or resonant artifacts. While the textures may not be overwhelmingly rich or visceral, they maintain a level of fullness, and the physical impact and punch can be notably impressive.

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The mid-range exhibits a harmonious balance, characterized by a slight warmth that is both rich and captivating. It neither feels subdued nor overly pronounced, presenting a refined auditory experience that is both musical and lifelike. The tonal accuracy remains commendable, with the Kima 2 offering equal reverence to both vocal and instrumental elements. Overtones and fundamental tones intertwine beautifully, creating a vibrant and resonant sound that avoids any elements of listener fatigue. While the Kima 2 may not be a powerhouse in technical specifications, it certainly does not fall short in clarity and resolution.

The treble exhibits a vibrant and radiant quality while maintaining a smooth, courteous, and forgiving character, without sacrificing definition and clarity. The Kima 2 reveals a significant amount of inner detail, albeit subtly, ensuring that it does not come across as overly analytical. This earphone distinctly avoids a clinical or sterile sound profile; the higher frequencies are devoid of harshness, excessive brightness, or any metallic artificiality. While some listeners may miss some energy and brightness, the majority will appreciate its natural tonal quality and recognize the sound's coherence, as well as the skillful integration of the treble with the lower frequencies.

The soundstage is unexpectedly expansive and airy, featuring a naturally broadened width, though it lacks depth layering and a sense of holographic presence. The overall impression is that of a flat, horizontally oriented soundstage, yet the projection occurs outside the head, positioned at the front of the listener's face, with imaging that is notably strong for this category.

Comparison with the FiiO FD15

The FiiO FD15, priced at $30 more, stands out as my preferred single dynamic driver earphone within a specific price range due to its remarkable tonal accuracy and realistic timbre.

Both earphones exhibit nearly identical sound profiles, with only slight variations. The FD15 offers a deeper bass response and is tuned more neutrally in the lower frequencies, while it presents a slightly more pronounced midrange and a less extended treble. They both excel in tonal accuracy and timbre realism, with neither being technically superior to the other. Both are equally musical and engaging, with the primary distinction being that the FiiO has a drier sound compared to the Kima 2, which is characterized by a lusher and more organic quality. I genuinely appreciate both models, as they rank among my top earphones.

In terms of physical attributes, both earphones provide a comfortable fit and exhibit high-quality construction. They are well-equipped with accessories; however, the plastic case of the FD15 is of lesser quality compared to the premium carrying case offered with both the standard and limited editions of the Kima 2. Additionally, the cable of the Kima 2 is softer and lighter than that of the FD15, which benefits from the inclusion of three sound tuning tubes.

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Conclusion

The Dunu Kima 2 has quickly established itself as one of my preferred earphones, thanks to its remarkable tonal accuracy and realistic timbre. I am confident that anyone who appreciates these qualities will feel the same. While some may perceive a deficiency in treble brilliance or technical capabilities, the majority will likely value the earphones' rich musicality and laid-back character.

In addition to its sound performance, the Dunu Kima 2 boasts a premium build quality, attractive design, comfort during wear, and a comprehensive accessory package, all at an affordable price. In straightforward terms, the Dunu Kima 2 ranks among the finest earphones I have evaluated, offering an exceptionally high price-to-performance ratio, which leads me to believe it will achieve significant success.

The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the Dunu Kima 2 is $119.99 and you can buy it from Dunu.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos

Reviewer at hxosplus
Collectable
Pros: + Balanced sound signature
+ Sub-bass extension
+ Neutral bass with great technicalities
+ Mid-range balance
+ Smooth but extended treble
+ More coherent than the S12 Pro
+ All-rounder performance
+ Spacious soundstage with accurate imaging
+ Easy to drive
+ Premium looks and well made
+ Cable with swappable plugs
+ Plenty of ear-tips and carrying case
+ Limited anniversary accessories
Cons: - Still some planar timbre
- Limited soundstage depth
- The cable is a bit heavy and the plug too long
- Sensitive to source noise
- Limited availability
- Fingerprints magnet
The LETSHUOER S12 Pro stands as one of the brand's most prominent earphones to date. It is an economical, comfortable, and high-quality planar magnetic earphone that offers an excellent price-to-performance ratio, contributing to its significant success.

To celebrate their 8th anniversary, LETSHUOER has introduced a special limited edition of the S12 Pro, known as the S12 2024 anniversary edition. This version features an enhanced design and a subtly modified tuning compared to the original model.

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Non Audio stuff

The LETSHUOER S12 2024 edition features an expansive 14.8mm planar magnetic driver, which is encased in a newly crafted titanium alloy chamber, complemented by a precision CNC milled shell.

While the exterior design has not changed, the 2024 edition presents a more premium and luxurious appearance compared to the S12 Pro, attributed to the classic pairing of gold and black finishes. Furthermore, each earphone is adorned with a distinct laser-etched serial number, emphasizing the individuality of the product.

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Ergonomics and build quality

The S12 Pro was renowned for its exceptional comfort, attributed to its lightweight design, compact size, and ergonomically crafted ear-shells. The S12 2024 enhances this comfort further, being lighter and more skin-friendly than its predecessor. It fits snugly and provides excellent sound isolation without any discomfort, even after prolonged use. The S12 2024 is the type of earphone that allows users to immerse themselves in their favorite music without being aware of its presence.

The LETSHUOER S12 2024 is meticulously constructed, utilizing high-quality materials and outstanding craftsmanship. Its aesthetic appeal and build quality exceed what one might anticipate from a $200 earphone, showcasing LETSHUOER's remarkable ability to surpass expectations.

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Cable and accessories

LETSHUOER has outfitted the S12 2024 with a premium 2-pin detachable cable featuring interchangeable plugs. This cable is constructed from 392 strands of silver-plated monocrystalline copper, presented in a braided format. It is crafted with high quality, exhibiting minimal microphonic noise; however, it tends to be somewhat rigid, prone to tangling, and heavier than typical cables. All aluminum components are gold-plated to complement the design of the ear shells, and the package includes hot-swappable plugs in 2.5mm, 4.4mm, and 3.5mm sizes.

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The package comprises two distinct varieties of silicone ear-tips, available in three sizes each (balanced and vocal), along with three sizes of memory foam ear-tips. Additionally, it features a plastic carrying case with a screw top and two unique accessories: a metal commemorative keychain and a glossy anniversary card.

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Power needs

The impedance and sensitivity specifications have not changed, remaining at 16Ω and 102dB, respectively. Consequently, the S12 2024 is equally easy to drive as the S12 Pro. It is essential that the source can deliver sufficient current without distortion when handling 16Ω loads, and it should operate quietly, as the earphone is particularly sensitive to ambient noise. While the LETSHUOER DT03 serves as a suitable entry-level option, superior performance can be achieved with higher-quality sources such as the FiiO M23 and the iBasso DX180.

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Audio stuff

The LETSHUOER S12 2024 features a well-balanced tuning characterized by substantial sub-bass extension, natural bass response, a prominent mid-range, and a treble that is both well-extended and smooth. This tuning is versatile enough to accommodate a wide range of musical genres, from classical compositions to contemporary tracks, without significant compromises. It serves as a true all-rounder earphone, appealing to a broad audience, provided that users do not have extreme preferences in tuning. The overall tonal balance closely resembles that of the S12 Pro, with the primary distinction being the smoother treble, which reduces sharpness and brightness.

The bass performance is not only tonally accurate, exhibiting minimal mid-bass coloration, but it also demonstrates technical proficiency with remarkable definition and layering for its category. While the planar bass may lack some weight and can sound slightly lean, it is exceptionally tight and controlled, free from any noticeable hollowness or bloat. It delivers fast and precise sound with good physical impact and ample dynamic contrast, making it suitable for both critical and casual listening experiences.

The mid-range is well-balanced, featuring less intensity in the upper mid-range compared to the S12 Pro, resulting in a vivid, clean, and articulate sound that avoids sharp or fatiguing qualities. Although the textures may be slightly dry and not as lush or weighty, the S12 2024 offers considerable musicality and deep engagement, maintaining tonal accuracy and realism with a rich array of harmonies.

The treble in the S12 2024 is less emphasized compared to the S12 Pro; however, it remains vibrant and energetic without veering into excessive brightness or harshness. The timbre has seen significant enhancement over its predecessor, presenting a more natural quality with minimal artificiality. Nonetheless, there is a hint of the characteristic "planar" timbre, which can render high-pitched instruments and vocals somewhat peculiar and artificial, though this does not compromise their pitch or tonal accuracy.

The S12 2024 exhibits greater resolution and refinement than its earlier version, positioning it among the top contenders in its class. The sound is clear and well-articulated across the entire frequency spectrum, with detail retrieval approaching class-leading standards, all while maintaining a melodic quality devoid of any clinical coldness.

This earphone offers an open sound profile with considerable horizontal expansion. While it may not excel in depth layering or holographic imaging, it still delivers a spacious and grand auditory experience with excellent imaging capabilities. It is adept at managing complex tracks and effectively conveying the ambiance of live recordings.

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Family affairs

The S12 2024 not only surpasses the S12 Pro in aesthetics but also offers enhanced tuning, resulting in improved sonic coherence and overall performance. Users who have expressed dissatisfaction with the "planar" timbre and the pronounced brightness of the S12 Pro should consider upgrading to the S12 2024, as it effectively addresses these concerns.

The LETSHUOER S15, priced at $329, represents the next evolution in the brand's planar magnetic earphone lineup, featuring an upgraded driver design with dual chambers. However, the S15 is less visually appealing and bulkier compared to the S12 2024, which may affect comfort and aesthetic preference.

Opt for the S15 if you desire a more substantial, impactful low-end that delivers a slightly colored sound signature, excelling in technical performance and punchiness compared to the S12 2024, albeit with a less neutral tuning. The S15 also emphasizes the upper mid-range, making it suitable for those who prefer this tuning; however, it is notably subdued in the treble, resulting in a darker, warmer, and less energetic sound profile than the S12 2024. In contrast, the S12 2024 offers a cleaner, brighter, and more transparent sound, while the pricier S15 resolves the "planar" timbre issues and provides a more refined and detailed listening experience than its smaller counterpart.

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Conclusion

The LETSHUOER S12 2024 edition was produced in a limited quantity of 2024 units. While the exact number remaining in the market is uncertain, if you come across one, it is advisable to acquire it promptly. This recommendation is based not only on its status as a collector's item but also on its exceptional sound quality.

The review sample was kindly provided free of charge in exchange for an honest review. The price of the LETSHUOER S12 2024 edition is $199.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ceeluh7
Ceeluh7
Nice review for a special set.
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Ichos
Thank you.

Ichos

Reviewer at hxosplus
The king is dead, long live the king!
Pros: + Bass prominent yet balanced tuning
+ Great sub-bass extension
+ Excellent bass technicalities
+ Exceptionally well tuned mid-range
+ Energetic yet smooth treble
+ Natural timbre
+ Musical and engaging
+ The perfect all-rounder
+ Immersive soundstage
+ Three audio filters
+ Comfortable for the size
+ Excellent build quality
+ Generously accessorized
+ Rightfully priced
Cons: - The bass is not tuned for critical listening
- Slightly heavy and bulky ear-shells
- The cable is thicker and heavier than the average
- Not as fancy looking as the FH9
- The FH9 had more bass
- Not for treble or bass heads
- Medium noise isolation
The FH19 takes the place of the FH9 as FiiO's premier hybrid in-ear monitor, a lineup characterized by a combination of dynamic and balanced armature drivers.

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The FiiO FH19 combines two dynamic drivers in a push - pull arrangement together with 6 balanced armature drivers. The push - pull technology was developed by FiiO with close collaboration with Tokyo Onkyo and employs two, 13.7mm, high-magnetic dynamic drivers with PU+DLC diaphragms arranged in opposing configuration. Compared to typical dynamic drivers, a push - pull arrangement requires only half the amplitude to achieve the target sound pressure level.

The mid to high frequencies are handled by six Knowles balanced armature drivers. The mid-frequency driver is developed in close collaboration with FiiO and features acoustic vents strategically positioned at the rear cavity.

The FiiO FH19 utilizes a semi-open design specifically tuned to combine with FiiO's front and rear cavity balanced pressure relief technology. This design effectively protects the eardrum from acoustic pressure while it also enhances the openness of the soundstage.

You can read everything about the FiiO FH19 here.

Audio tuning filters

The FiiO FH19 is equipped with three pairs of interchangeable audio filters. Each filter features distinct internal damping and mesh density, enabling the attainment of three subtly varied sound profiles, which will be elaborated upon subsequently.

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Enhanced wearing ergonomics

The FH19 features various enhancements over the previous model that result in improved wearing ergonomics.

Based on user feedback and numerous optimizations, the angle between the ear nozzle and the wearing surface along the Y-axis is precisely 10° while the length of the ear nozzle has remained unchanged.

The FH19 features an entirely new rear cavity design that is more three-dimensional, while ear-friendly protrusions ensure a snug and stable fit by minimizing any unwanted movement.

The brand-new rear cavity design features a slight reduction about 1mm in thickness in the area that corresponds to the fold of the human ear. This structural design significantly reduces the sensation of pressure and compression on the ear caused by the earphones.

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Non Audio stuff

The mid-frame of the FH19 is constructed from a titanium alloy, which not only imparts a luxurious aesthetic but also features an appealing hue, although some individuals may perceive it as overly dark.

This titanium mid-frame boasts properties of rigidity and corrosion resistance, safeguarding the earphone's shell, which is crafted from 7000 series aluminum—a material known for its durability and strength.

The FH19 exhibits exceptional craftsmanship and finishing, complemented by an industrial design that contributes to its distinctive and captivating look.

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Wearing experience and isolation

The FH19 presents a more compact and anatomically designed ear-shell compared to the FH9, and it is also lighter in weight. While the FiiO FH19 may appear somewhat bulky and heavier than other earphones, it does not extend excessively beyond the ears and provides an excellent fit. It remains comfortable even after prolonged use, delivering a superior user experience while maintaining an attractive aesthetic.

Although the noise isolation is satisfactory given its semi-open design, it does not lead the category, as the ear-shells do not conform deeply and snugly. The FiiO FH19 is suitable for use in urban settings, but it is best appreciated in quieter surroundings.

Cable and accessories

The cable accompanying the FiiO FH19 is constructed from high-purity, pure silver wires, comprising eight strands with 28 wires each, resulting in a total of 224 wires. Each wire is insulated with enamel, and the cable is intricately twisted in Litz braids. The outer layer is crafted from transparent, eco-friendly TPU, which is both durable and effectively resists yellowing over prolonged use.

This cable is equipped with straight, twist-lock swappable plugs and enhanced MMCX connectors to ensure improved stability. The package includes both 3.5mm and 4.4mm plugs. Overall, this cable is exceptionally well-made and robust, exhibiting low microphonic noise. It is flexible and resistant to tangling, although it may be somewhat bulky and heavy.

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The package comprises 22 pairs of ear-tips, available in a range of shapes and sizes. In addition to the standard silicone ear-tips designed to enhance bass and vocals, the purchaser will receive SpinFit ear-tips as well as FiiO's HS18 and HS20 models. Furthermore, a high-quality hexagonal carrying case is included, along with several additional accessories. This comprehensive offering significantly enhances the value of your purchase.

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Power requirements

With an impedance of 16Ω and a sensitivity of 109dB, the FiiO FH19 is readily driven by less powerful sources. Nonetheless, it is essential that the source maintains high quality, as the FH19 is susceptible to background noise and performs exceptionally well with superior audio sources. It pairs effectively with USB DAC dongles such as the FiiO KA15, and demonstrates even greater performance when used with digital audio players like the FiiO M23 or the iBasso DX180.

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Audio stuff

The general listening impressions apply to the green sound filter.

The FiiO FH19 features an exceptionally well-balanced tuning, ensuring that all frequency ranges are given equal significance. The sub-bass extension is impressive yet remains controlled, while the bass is subtly enhanced. The mid-range is perfectly present, and the treble is both vibrant and smooth.

The overall tonality approaches perfection, making the FH19 versatile enough for various musical genres. It serves as a true all-rounder earphone, appealing to both discerning audiophiles and casual listeners alike. Although the tuning is not strictly neutral—particularly in the lower frequencies—it maintains a compelling tonal accuracy that satisfies a wide audience.

The sub-bass extension effectively reaches down to 20-30Hz without any noticeable drop-off, resembling a well-tuned subwoofer that enriches the lower octave without overwhelming the overall sound. The bass leans slightly towards the mid-bass region, but this is done delicately, preserving the integrity of the mid-range. It may not be considered a neutrally tuned low-end, critical listeners might perceive it as somewhat colored and lacking in precision; however, this does not detract from its suitability for classical music. The FH19 truly excels with a variety of other genres, such as rock, pop, and electronic music, delivering a bass-rich listening experience that does not compromise mid-range presence or treble clarity.

The technical performance of the FiiO FH19 is outstanding within its category. The bass is well-defined, tight, and controlled, exhibiting impressive layering. It delivers a fast and responsive sound that is both punchy and impactful, showcasing realistic dynamic contrasts and rich textures, all while avoiding any reverberation or excessive echo. The low-end strikes an ideal balance between enjoyment and technical excellence, effectively navigating the line between a reference sound and a more casual listening experience.

The mid-range truly stands out, offering excellent tonal balance and remarkable transparency, even with the pronounced bass. It is marked by exceptional sonic coherence from the lower mids to the upper mid-range, which is refreshingly unexaggerated compared to current trends. The FH19 avoids sibilance, maintaining a smooth sound that is neither sharp nor fatiguing, while still providing ample definition and resolution.

The textures are rich and substantial, yet they maintain clarity without becoming muddy or overly dense, while the timbre is vibrant with a spectrum of colorful harmonies. The tonal precision is exceptional, rendering voices and instruments with a lifelike and remarkably realistic quality. The FH19 is both musically engaging and captivating, characterized by a melodious and organic essence, sophisticated and mature, yet retaining a sense of fun and youthfulness.

The treble is well-balanced with the other frequencies, contributing to a lively and airy presentation without crossing into brightness or harshness. It is perfectly calibrated to prevent an excessively dark and warm sound profile while remaining smooth and well-controlled. While some may perceive it as slightly restrained or lacking in brilliance, the majority will value its gentle nature, which still provides ample detail retrieval and resolution.

The textures are rich, aligning well with the lower frequencies, which ensures that the treble of the FH19 does not come across as thin or dry. The tonal fidelity is more than satisfactory, and the overall timbre is remarkably natural, devoid of any metallic or "balanced armature" artificial characteristics. Overall, the tuning of the FiiO FH19 exhibits exceptional coherence, with the drivers seamlessly integrated, avoiding any sense of disconnection or phase issues.

Similar to the FH9, the soundstage of the FH19 is impressively wide and spacious, yet it adapts effectively to the size of the musical ensemble. Furthermore, it outperforms the FH9 in terms of positional accuracy and depth layering, resulting in an immersive listening experience rich in three-dimensionality and ambient detail. The soundstage of the FH19 is truly outstanding and should be regarded as a leader in its class.

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The sound filters

The sound filters of the FH19 demonstrate notable effectiveness, providing three unique sound profiles that enhance versatility.

The black filter is regarded as the balanced option, while switching to the red filter, which emphasizes bass, results in a slight increase in bass response accompanied by a gentle reduction in the presence range. This adjustment leads to a darker sound with a pronounced bass presence, albeit with some compromise in clarity and treble brightness. However, the technical aspects of the bass remain largely intact, making the red filter an excellent choice for those desiring a warmer and bass-heavy sound signature.

Conversely, the green filter, designed to enhance treble, slightly reduces the bass while offering a mild boost to the presence range, resulting in a more balanced audio profile. This adjustment improves the tonal accuracy of the low-end and adds clarity and transparency to the treble, creating a more energetic sound that is well-suited for critical listening.

Comparison with the FiiO FH9

The FiiO FH9 distinguishes itself from the FH19 in both design and audio characteristics. It is somewhat bulkier and heavier than the FH19, which may affect comfort; however, it boasts a more luxurious appearance that aligns with its flagship status, at least from my personal perspective.

In terms of sound signature, the FH9 exhibits a classic “V” shaped profile, characterized by enhanced bass and treble, while still providing a respectable mid-range presence. The sub-bass on the FH9 extends deeper, creating an auditory experience reminiscent of having a subwoofer directly in your ears. While the FH9 delivers a fuller and more powerful bass, the FH19 excels in technical performance.

The FH9 also offers greater sparkle and vividness in the treble, resulting in a cleaner and more transparent sound, though it occasionally approaches brightness, and its timbre lacks the natural and organic quality found in the FH19. Although the FH9 is slightly more resolving, the FH19 presents more refined textures and superior tonal coherence. The most significant distinction lies in the mid-range, where the FH19 shines, offering a more musical and engaging experience.

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Ultimately, is the FH19 superior to the FH9?

The answer depends on your preferences. If you prioritize tonal balance and coherence, along with a more natural and organic timbre, then the FH19 is indeed the better choice. Conversely, if you seek powerful, fun bass while still enjoying a solid mid-range presence and treble clarity, the FH9 would be the ideal option.

Conclusion

FiiO has successfully developed the FH19, an exemplary all-purpose earphone that caters to both discerning and casual listeners while maintaining a high level of technical proficiency.

The tonal balance of the FiiO FH19 is expertly crafted, ensuring it performs admirably across a wide range of audio content. Its versatility is further enhanced by three sound filters, which provide opportunities for precise adjustments.

Remarkably well made and surprisingly comfortable given its size, the FiiO FH19 comes with an impressive array of accessories and is appropriately priced, making it a great option and one of the top choices available at the time of this review.

The review sample was kindly provided free of charge. I don't use affiliate links. The price of the FiiO FH19 is $599 and you can buy it from here.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos

Reviewer at hxosplus

Sivga P2 Pro

grailnewt
Updated
Do it like a pro
Pros: + Neutral sound profile
+ Excellent low-end tonality
+ Great bass technicalities
+ Very good clarity and transparency
+ Smooth yet resolving treble
+ Natural timbre
+ Spacious soundstage
+ Very comfortable
+ High quality materials and craftsmanship
+ Balanced cable with single ended adapter
+ Premium carrying case
+ Excellent value
Cons: - Flat and intimate soundstage
- A little metallic and artificial treble
- Upper mid-range emphasis might not be for everyone
- Rather lean textures
Sivga is a renowned audio brand recognized for its production of headphones and earphones featuring wooden enclosures. The Sivga P-II stands out as the brand's top-selling model, characterized by its planar magnetic, open-back design that offers an exceptional price-to-performance ratio, contributing to its widespread acclaim.

Sivga has now introduced an enhanced version of the P-II, known as the P2 Pro, which has a revised tuning and a new wood finish to set it apart from the original model.

The Sivga P2 Pro is equipped with planar magnetic diaphragms and incorporates an innovative sapphire vibration circuit, marking a pioneering advancement in the industry. For a more in-depth exploration of the technologies utilized in the Sivga P2 Pro, further information is available here.

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Non Audio stuff

The driver housings of the Sivga P2 Pro are constructed from red oak wood, in contrast to the black walnut utilized in the P-II model. Each piece of wood is meticulously hand-polished, ensuring that every headphone possesses a distinct aesthetic.

The outer frame is crafted from an etched stainless steel mesh, while all other metal components are produced through CNC machining and receive a surface gunmetal treatment, imparting a unique and luxurious look to the headphones.

The P2 Pro boasts an enhanced headband design that offers improved ergonomics compared to the P-II. It features a refined self-adjusting mechanism, and the suspension strap is both wider and thinner, incorporating kidskin on the exterior and a skin-friendly velvet on the interior.

The Sivga P2 Pro is exceptionally well-crafted and assembled, utilizing only premium materials without any plastic components. The headphones operate silently during adjustments or head movements, providing an excellent user experience in both visual appeal and ergonomic comfort.

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Wearing experience

The ear pads are designed with an asymmetrical shape that has been meticulously engineered to accommodate a variety of face shapes while providing an excellent seal. The outer edge is constructed from high-protein leather, the surface that contacts the skin is made of velvet, and the interior is filled with a soft sponge. These pads envelop the entire ear, offering a comfortable and cool experience due to their effective air circulation.

Weighing 435g, the Sivga P2 Pro is not the lightest option available; however, it remains exceptionally comfortable to wear, thanks to its thoughtfully designed headband that ensures even weight distribution, thereby preventing pressure points on the head. The swiveling ear cups further enhance the ability to achieve a customized fit. The clamping force is adequately balanced to maintain stability without causing discomfort. Users can enjoy extended listening sessions with the Sivga P2 Pro without the need for breaks or feeling the weight on their neck.

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The cable

The interchangeable cable is equipped with dual 3.5mm connectors and is constructed from 6N OCC copper in a braided format that complements the headphone's aesthetic. It is terminated with a 4.4mm plug and includes a handy 4.4mm to 3.5mm short tail adapter. This cable is crafted with precision, featuring high-quality connectors, strain reliefs, and a soft, lightweight design that minimizes microphonic noise.

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Accessories

In addition to the two cables, the package includes a 6.35mm adapter, a hemp carrying bag, and a premium carrying case featuring a leather exterior. This comprehensive bundle significantly enhances the value of the headphones.

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Power requirements

The headphones feature an impedance of 32Ω and a sensitivity of 98dB, making them relatively easy to drive, although the source should be capable of delivering sufficient current. While an amplifier is not strictly required, the headphones perform optimally with more robust sources such as high-quality digital audio players (DAPs), DAC/amp combinations, or select USB dongles. Throughout the majority of this review, I utilized the Aune S9C Pro, the FiiO K11 R2R, and the iBasso DX180.

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Audio stuff

Sivga appropriately chose the term "Pro" as the second part of the headphone's name, as this latest iteration adopts a contrasting tuning approach compared to the warmer-sounding P-II. True to its designation, the Sivga P2 Pro features a monitor-like tuning that offers remarkable neutrality, a well-balanced tonal profile and outstanding clarity across the entire frequency spectrum.

This headphone sets a high standard for transparency and fidelity within its class, delivering impressive detail retrieval and resolution. While the technical performance has significantly advanced from its predecessor, Sivga has skillfully ensured that it does not come across as a purely monitoring device, thus avoiding a sterile or clinical sound. Although the textures may lean towards the lighter side, they remain engaging rather than dry, allowing the P2 Pro to convey music with a rich variety of harmonics and a diverse array of overtones.

The low-end performance of the Sivga P2 Pro achieves an exemplary equilibrium for critical listening, presenting a tonally accurate sound devoid of any superfluous coloration. The sub-bass extension is commendable, exhibiting no noticeable attenuation, and all bass instruments are rendered with fidelity, closely mirroring real-life sound. The technical prowess of the Sivga P2 Pro is evident, as the bass is both tight and well-controlled, featuring remarkable layering and a surprisingly robust physical presence. Its technical capabilities allow it to adeptly manage even the most challenging bass lines without compromising pace or clarity.

In terms of the mid-range, the Sivga P2 Pro exhibits a notable emphasis on the upper mid-range, which tends to be more pronounced and possesses greater amplitude compared to the treble peaks, occasionally bordering on sharpness. The perception of the upper mid-range can vary based on the recording quality and mixing techniques; it may come across as overly intense, particularly at higher volumes, potentially being perceived as piercing or harsh by individuals sensitive to this frequency range. Nevertheless, the mid-range remains relatively balanced, offering acceptable tonal accuracy and a predominantly natural timbre for both vocals and instruments. The Sivga P2 Pro is sufficiently musical and engaging, maintaining exceptional clarity and articulation while avoiding any sense of sterility or dryness.

The treble exhibits a smoother quality compared to the upper mid-range, avoiding any brightness or fatigue while maintaining commendable extension and ample energy. The higher frequencies are reproduced with remarkable detail, without coming across as dry or overly thin. The timbre approaches a natural sound, although there are occasional hints of metallic artificiality that do not significantly detract from the realism of the treble.

The soundstage is expansive and naturally broadened, featuring precise imaging and a generous sense of surrounding air. While it may lack depth, the overall experience leans more towards intimacy rather than grandeur or holography, yet the ambiance of high-quality recordings is still perceptible.

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The competition

The Sivga P2 Pro serves as an appealing alternative to the Hifiman headphones within the same category. It is particularly suitable for individuals seeking an economical planar magnetic headphone that offers a neutral and balanced sound profile, while presenting a less pronounced treble compared to Hifiman models. However, potential users should be aware of the P2 Pro's emphasis on the upper mid-range. Another budget-friendly choice is the FiiO FT5, which, in contrast, delivers a more romantic and warm sound, leaning towards a casual listening experience rather than a critical one.

Conclusion

The Sivga P2 Pro is a remarkably crafted headphone that combines comfort with a premium aesthetic, featuring a neutral and balanced sound profile. It excels in various aspects, making it suitable for both critical listening and casual use, while also being appropriate for professional monitoring applications. Priced appropriately and accompanied by a generous array of accessories, it offers excellent value and distinguishes itself by providing an alternative to typical commercial sound tunings.

The review sample was kindly provided free of charge. I don't use affiliate links. The price of the Sivga P2 Pro is $449 and you can buy it from here and here.

Disclaimer: For various Google indexing reasons, parts of this review have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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Ichos

Reviewer at hxosplus
Grell OAE1 (standard version)
Pros: + Bass emphasized tuning
+ Class leading sub-bass extension
+ Punchy and impactful bass
+ Fan and exciting
+ Mid-range presence
+ Treble clarity and definition
+ Good resolution and transparency
+ Spatial soundstage with sharp imaging
+ Less clamping force versus the Signature
+ Comfortable and lightweight
+ All black is a beauty
+ Good build quality
+ Affordable
Cons: - Too much bass for critical applications
- Bass is slightly lacking in tonal accuracy
- Bass technicalities could be better
- Slightly artificial sounding treble
- Not a speaker-like soundstage as advertised
- The soundstage is not especially wide
- The cable sockets are too narrow limiting aftermarket options
- Carrying case and balanced cable are not included
- May not fit people with larger heads
Axel Grell is a renowned audio engineer credited with the creation of some of the most esteemed headphones globally, including the Sennheiser HD600, HD650, and HD800. After many years of dedicated service at Sennheiser, Mr. Grell made the decision to establish his own brand, leading to the inception of Grell Audio.

To facilitate promotion and sales, Grell Audio formed a partnership with the community-oriented platform Drop. The inaugural product from Grell Audio was the Drop + Grell TWS/1, a wireless earphone set for which I had the honor of writing the world premiere review. Currently, Grell Audio has returned with a full-sized headphone, the Drop + Grell OAE1.

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Drop + Grell OAE1

The Drop + Grell OAE1 is a full sized, open back headphone with a revolutionary driver geometry that promises to make them sound like speakers in front of the listeners head. The OAE1 positions the drivers further out and in front of the ears to create a soundfield that’s stunningly natural. It’s an innovative yet undeniably intuitive acoustic concept that Axel Grell first implemented in high-end Sennheiser headphones like the HD800 and now has tried to perfect it.

The two speaker membranes of the Grell OAE1 are positioned at an angle to the ear to project the sound waves as if they were coming from a source directly in front of the listener. The drivers are broadband transducers with bio-cellulose diaphragm.

The baffle also contributes to the unique listening experience that the OAE1 promises. The Grell OEA1 has an extremely large, curved and open baffle, which is complemented by an open ear cushion. This design allows the sound to spread naturally without being reflected by large closed areas. The high-precision stainless steel mesh guarantees high acoustic permeability and controlled bass reproduction. This prevents sound coloration and resonances.

Widening the soundstage even further, Axel Grell and his team developed ear-cups that are 90% open metal mesh and a woven stainless steel acoustic-damper mesh, both of which allow sound waves to pass through with minimal interference.

You can read the whole design concept of the Drop + Grell OAE1 here.

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The signature edition

The Drop + Grell OAE1 initially debuted as the "Signature" model, a limited edition collector's item with only 1,000 units available, which quickly sold out within a matter of weeks.

This Signature model was priced at $349 and showcased silver-painted ear cups and hinges, each adorned with Axel Grell's engraved signature. Additionally, the headphones came with a premium carrying case and included two cables: one featuring a 3.5mm plug and the other a balanced 4.4mm plug.

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The standard version

Grell Audio and Drop have joined forces to introduce the standard version of the OAE1, which shares the same tuning as the Signature model but incorporates a couple of notable modifications.

The most significant change is the reduction of clamping force, which has been adjusted to 3N from the 3.5N found in the Signature edition, resulting in less pressure on the head. While the Grell OAE1 still exerts a firmer grip than many headphones available on the market, it now offers improved comfort and less pressure on the head.

In terms of aesthetics, the standard OAE1 showcases a more understated black finish, favored by Drop, along with prominent L and R indicators within the ear-cups to assist with orientation and placement.

The standard Grell OAE1 is priced $50 lower; however, this reduction comes at the cost of the practical carrying case and the balanced cable. These accessories are quite beneficial, and I would willingly pay the additional $50 to obtain them. It would be advantageous if Drop provided two bundle options, allowing customers to make a choice.

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Non Audio stuff

The OAE1 is constructed with high-quality materials and features a simple, minimalist aesthetic that is likely to attract a wide audience. The ear-cups consist primarily of a large metal mesh, complemented by a woven stainless steel acoustic damper mesh. Aside from the outer rings, which maintain a silver finish, the remainder of the design is coated in black.

The ear-cups are secured to the headband using aluminum clamps. The headband itself is rounded, padded with memory foam, and wrapped in PU leather. The central section of the headband incorporates lower density foam to prevent the formation of pressure points.

The velour ear pads are generously thick and filled with firm memory foam, ensuring that the drivers are positioned at an optimal distance from the listener's ears, which is crucial for the tuning process.

The mechanism for adjusting the headband operates smoothly and is sufficiently tight to maintain its setting. All components of the headphones are designed to be user-replaceable.

The circular ear pads are sufficiently wide and deep to fully encompass the ear while allowing for ventilation. However, the velour surface does not provide a cooling effect, and some perspiration may occur after extended use. The ear pads possess a firmer texture than usual, which may require an adjustment period. The ear cups feature a 180-degree swivel mechanism for enhanced positioning.

The headband offers adequate comfort, enabling prolonged use of the headphones for several hours without the necessity for breaks.

The Drop + Grell OAE1 is a lightweight headphone, weighing 375 grams. With a reduced clamping force, it delivers a comfortable fit comparable to that of most other headphones.

It is noteworthy that the headband adjustment mechanism does not extend significantly, even at its maximum setting, which may result in an inadequate fit for individuals with larger head sizes. Personally, I find the fit to be just barely adequate at the maximum adjustment. This concern was raised by the community regarding the Signature model; however, the headband design has not changed in the standard version.

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The cable and accessories

The Grell OAE1 is designed to accommodate both dual and single entry cables, as each ear-cup is equipped with a socket that accepts a 2.5mm plug. An integrated overhead wire facilitates the sharing of the input signal between both drivers when utilizing a single entry cable, allowing for connection to either side. Additionally, the headphones can support both dual and single entry balanced cables.

Nevertheless, the input sockets feature an extended plastic tunnel that serves to protect the plug from unintentional bending; however, this design also restricts the diameter, making it challenging to locate aftermarket plugs that are compatible.

Given that the standard version of the Grell OAE1 is supplied with only one single-ended cable, finding a suitable balanced cable may prove difficult due to this diameter constraint. Therefore, it would be prudent for Drop and Grell Audio to consider offering the original balanced cable that was part of the Signature model bundle.

Except for the cable you only get a 6.35mm plug adapter.

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Audio stuff

The headphone features a nominal impedance of 38Ω and a sensitivity of 106dB/Vrms, making it easy to drive without the requirement for specialized amplification. My primary usage has been with the FiiO M23, the iBasso DX180 and the Aune S9C Pro, utilizing the balanced cable from the Signature version.

The Grell OAE1 delivers an astonishing level of bass that may be difficult to comprehend upon initial listening. It requires a brief period to acclimate and fully grasp the auditory experience. The sub-bass extension is remarkable for an open-back headphone, particularly one at such an affordable price point. It is challenging to identify another open headphone that can reproduce frequencies as low as 20Hz with such fidelity. Axel Grell has achieved a tuning that simulates the sensation of having subwoofers positioned near the ears while maintaining impressive clarity in both the midrange and treble frequencies.

The bass is accentuated, deviating from a neutral response, which is unexpected given the designer's background with the HD800. However, this emphasis is not so pronounced as to reach excessive levels that would compromise tonal accuracy. While it is accurate to say that the Grell OAE1 does not offer the most tonally precise low-end, its exuberantly tuned bass creates an engaging and enjoyable listening experience. It is capable of handling classical and acoustic genres, provided one is willing to overlook its lack of neutrality and embrace its more relaxed character. Personally, it may not be my preferred choice for classical music, but it excels with a wide range of other genres, particularly modern electronic and trance music.

In terms of technical performance, the Grell OAE1 generally exceeds average standards. The bass is tight and well-controlled, free from noticeable echo or reverberation, while also being highly impactful and dynamic. It features rich textures and demonstrates quick response times, along with commendable definition and layering. However, it struggles with complex and dense bass lines, where it tends to become one-dimensional, slightly blurred, and somewhat bloated.

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More Audio stuff

The Grell OAE1 excels in maintaining an impressive balance and presence in both the mid-range and treble, even with its pronounced low-end. The bass is well-defined, ensuring it does not overshadow or interfere with the mid-range, which is allowed to express itself with clarity and remarkable resolution for its category. The overall tuning is notably balanced, providing satisfactory tonal precision and a natural timbre. The OAE1 is both musical and engaging, offering a rich harmonic variety that connects the listener to the music, effectively reproducing both vocal and instrumental performances.

The mid-range stands out as the headphone's most compelling feature, and in my opinion, it presents a more appealing and balanced sound than the renowned Sennheiser HD650, despite its emphasis on the upper mid-range. Axel Grell appears to have achieved a more refined and sophisticated tuning with the OAE1, resulting in a sound that feels more lifelike and realistic, while minimizing listener fatigue.

The treble is bright and lively, serving to balance the pronounced low-end and prevent an overly warm or dark sound profile. It possesses a brightness that is neither harsh nor piercing, and it resolves adequately for its category, though it may not be perceived as particularly spectacular or brilliant. The Grell OAE1 can be somewhat unforgiving with lower-quality recordings, particularly when paired with bright sources.

A notable drawback regarding the treble is its occasionally unnatural and metallic timbre, which can sound somewhat artificial at times. There is a degree of sterility and dryness, coupled with mildly suppressed overtones and a relative lack of harmonic richness. However, the perceived effects can vary significantly depending on the music and recording quality; for instance, classical music may not be as satisfying, while listeners of electronic music may find little to complain about.

The soundstage

The soundstage presents a varied experience, as it does not create the impression of the OAE1 resembling speakers positioned in front of the listener, contrary to its claims. It does not exhibit a greater expansiveness or holographic quality than most headphones and is notably less wide and immersive than the Sennheiser HD800. Nevertheless, it successfully delivers impressive spatiality with a pronounced central image that appears to emanate from a location outside the listener's head. While the Grell OAE1 may not provide extraordinary expansiveness, it offers a remarkably spacious and open sound within its confines, boasting class-leading depth layering and positioning, even when compared to significantly pricier headphones.

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Conclusion

The Drop + Grell OAE1 represents a scientific endeavor by a renowned acoustic engineer, resulting in a headphone that, while very good, may not cater to all preferences. It may not excel in rigorous critical listening and does not fully deliver on its promised speaker-like attributes. However, it does provide an unprecedented sense of spatiality and features a deep bass response that is emphasized yet maintains a balanced overall tuning.

The bass performance is impressive for an open-back headphone, and the tuning approach is vibrant and enjoyable, making it particularly well-suited for casual listening without sacrificing sound quality. The newly released standard version has improved upon the comfort issues found in the Signature model and is offered at a more accessible price point. While the Drop + Grell OAE1 may not resonate with everyone, it is likely to cultivate a dedicated following among enthusiasts.

The review sample was kindly provided free of charge in exchange for an honest review. I don't use affiliate links. The price of the Grell OAE1 is $299 and is exclusively available from Drop. You take advantage of the pre-order discount and get them for $249.

Disclaimer: For various Google indexing reasons, parts of this review may have been processed with an automatic paragraph rewriting tool. However it reads exactly the same as the original content that is available in my website.
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J
jamesjames
Thanks for the report. Will these phones accept single entry balanced cables, in the same way for example that the MySphere does?
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Ichos
Ichos
Thank you. It accepts single entry balanced cables, like the one that was included in the signature edition. You can also use aftermarket cables as long as you can find one with a plug that fits the narrow socket of the headphone.
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