Softears Studio 4

thaslaya's star rating system:
☆☆☆☆☆ - Fantastic!
☆☆☆☆ - Recommended
☆☆☆ - There are buyers but not for me
☆☆ - Can't see the appeal
☆ - Product is a failure

Disclaimer:
This product was loaned to me for review by a friend. I recieve no compensation and all thoughts and opinions are my own. A big thank you to @Jaytiss for the opportunity!

Gear used:
●Samsung Galaxy s22 Ultra
●Softears S01
●Hiby FC4
●Kiwi Ears Allegro
●Letshuoer DT03
●Dunu DTC480
●BLON V1
●Snowsky Retro Nano
●iFi GO link Max

Source:
●Listening was done through Amazon Music HD or Ultra HD.

Introduction:
Softears is an IEM manufacturer based in China, probably more known for its expensive offerings like the Turii, RSV, Twilight, and flagship Enigma. They recently released their newest mid-fi IEM, the Volume S, which I reviewed and found to be quite excellent. This review will focus on another of their products released back in the spring of 2023, the Studio 4. It has a four-balanced armature driver configuration, is specifically designed and developed for studio recording, mixing, and stage monitoring, and has a price tag of $449. Let's break down this more neutrally tuned Softears IEM and see how it performs.

Build, fit, ergonomics:
The packaging and unboxing experience are somewhat underwhelming for the price. It is very simple, and the accessories are fairly minimal. It does make sense that there aren't many extraneous accessories, considering these are marketed more for stage and studio work; but coming from the hobby side of things, where accessories are a bigger focus, it feels disappointing. The shells are about average in size, made of solid resin, and have decent build quality. They usually come in a black colorway, but this unit I have for testing features a custom clear shell with a sparkly blue faceplate. The left IEM features the model name, Studio 4, and the right, the company name, Softears. The fit is mostly comfortable for me, but I did experience some pressure buildup at times due to the lack of ventilation. The shells utilize a recessed 2-pin connection, and the insertion depth is about average. The nozzle width measures 5.9 mm at the widest point, but there is no lip to help tips stay in place. The stock cable is made of oxygen-free copper and only comes in a 3.5 mm termination. It's not very soft or supple, feels a bit cheap in hand, and has some memory issues. For $450, I'd expect a much nicer cable. I preferred to use my Trusted Audio 50 cable along with the stock cable. Only three pairs of tips in one style are included in the box. I tried them, but ultimately chose to use my Penon Liqueurs for a better fit and seal. The plastic Pelican-style case is sturdy, well-built, and offers good protection. It's a bit large and wouldn't be my first choice; however, it's a decent inclusion for traveling. The remaining accessories include a Velcro cable tie, cleaning cloth, cleaning tool, 1.5-meter extension cable, and a 3.5mm to 6.5mm adapter.

Sound impressions:
The Studio 4 has a mostly neutral overall tuning with a slightly bright tilt. The note weight is just a hair on the thin side, but it is not too bad. This set is easy to drive and can get to loud volumes with a simple dongle. There is plenty of detail retrieval, but it is not overly clinical, though it lacks a sense of musicality and engagement for me. The soundstage has a good balance of width and depth and a certain fullness, but it is not very spacious or extensive. The timbre is mostly fine, but there can be slight unnaturalness to notes at times. It is a bit hard to describe; almost like there is a sheen or filter applied, but it is barely noticeable. The imaging has great accuracy left to right but could use improvement in terms of distance. The dynamics are decent, and the tuning holds up well enough at very low volumes. The separation and layering are also impressive.

For my source, I prefer the HiBy FC4. It helps bring out a little more fullness, note weight, and a certain excitement factor, and it also helps draw out the Studio 4's inherent musicality.


●Lows - The bass is more mid-bass focused than sub-bass. In typical BA bass fashion, the extension, rumble, and reverberation are somewhat lacking, though the speed is quick, which helps with double bass kicks and complicated bass lines. To my surprise, the decay is not too fast, like some BA sets, and it does linger a bit, which helps it have a more natural presentation. The texture could use some work, as it is a touch muddy, but not too bad. The resolution is commendable, but not quite what I'd expect for the price. Fortunately, the bass and midrange are well separated, and there's no bleed. The impact is a bit on the tamer side and it won't slam with much authority, but it does have a decent thump when tracks call for it. While I think the bass is well implemented and tuned for the neutrality the Studio 4 aims for, it still falls victim to some common tropes of BA bass. To its credit, it does have a certain fullness and body, and it is also pretty adaptive and responds well to each track. I find it to be fairly enjoyable, but ultimately it cannot quite mimic the presentation of a well-tuned dynamic driver that I prefer.

●Mids - Balance and neutrality are the key factors of the Studio 4's tuning, which means the midrange isn't particularly exciting or accentuated. Vocals are not recessed per se, but they definitely don't present forward enough for my usual preference. However, this also means they are never shouty or too in your face, and I think the overall balance this set is going for is accomplished well here. Vocals are clear and have a touch of warmth which is very enjoyable. Unfortunately, they can present a bit closer to the ear, making them sound somewhat unnatural when compared to the instrumentation around them. Speaking of instruments, they generally have a quite natural timbre and tonality, which makes this an enjoyable set for acoustic and orchestral arrangements. The lower midrange instruments could use a little more weight and representation, though. As a lover of vocals, the midrange falls a bit flat for me. A quick EQ of about 5 dB to the 4 kHz range brings them forward and makes for a more enjoyable listen for me. But alas, that affects the overall neutrality, which is really what the Studio 4 is aiming for.

●Highs - The treble is a bit of a conundrum for me. On one hand, it sounds a bit rolled off and muted, with less extension and air than I would expect from a truly neutral tuning. On the other, it offers a fair amount of sparkle and energy, which is still within the boundaries of neutral to my ear. Unfortunately, that energy tends to interact more with notes on sibilant-prone tracks, causing me some issues. It can also get slightly thin at times, especially with airier vocals. To its credit, cymbals, hi-hats, snares, and claps are all fairly well-behaved. They have a crispness and slight edge without sounding unnatural or metallic. Overall, I think either providing a bit more energy along with ample air and extension or keeping it tame throughout the entire upper frequencies would make for a more cohesive presentation and help provide a clearer tuning philosophy.

Comparisons: Credit to Super Reviews for the graphs.

●Ziigaat Estrella ($300) - This matchup pits the Studio 4's all BA configuration against a 2DD, 4BA hybrid. The Estrella has a slightly better unboxing experience, but the overall accessories are about the same. I prefer the Ziigaat's case to the Studio 4's, but the latter has a slightly better stock cable. The Estrella's shell is slightly larger, but the Studio 4 offers a slightly deeper insertion, though the nozzle is smooth and lacks a lip. Both sport a resin shell, and the Studio 4 is a bit smaller, but both offer a comfortable fit and seal for me. I personally prefer the Estrella's faceplate design. The Estrella is quite V-shaped, with a bigger bass shelf and a slightly brighter treble response, whereas the Studio 4 is much more neutrally tuned. The bass may be where these two differ most. The Estrella's double DD driver configuration offers much more sub-bass extension and rumble and is overall more satisfying for me as a semi-basshead. It is also more resolving and more impactful, with a good amount of slam and authority in the mid-bass. The Studio 4's neutral bass is more evenly balanced, though, and it has cleaner transients from bass to mids. In the midrange, the Estrella puts more emphasis on vocals, bringing them forward, which better matches my preferences. The Studio 4 has a flatter and more balanced midrange, which is great for instrument presentation but can also come across as a bit boring. The treble of these two actually sounds closer in ear than the graph would indicate. The Estrella definitely has better air and extension, but it is not quite as bright as it seems due to the large bass shelf that mostly helps to counter the brightness. The Studio 4 still has a certain edge and crispness in the treble that is easily discerned due to its flatter frequency response. As a treble-sensitive listener, both sets give me a few issues on certain notes and with certain tracks, but the Estrella is more incisive and has a bit more thinness. As for technicalities, the Estrella performs well for its price and offers a more expansive and fuller soundstage, better imaging, dynamics, and slightly better detail retrieval. However, the Studio 4 is simply better in instrument timbre and tonal accuracy, which is one of its strongest attributes. In conclusion, I must say these tunings are quite different, but both have their merits. However, I'd be lying if I said I didn't prefer the Estrella for just about every genre in my library except for orchestral music, which is where the Studio 4 really shines. Ultimately, the decision is fairly easy for me, as I find the Estrella to be a better all-rounder with a generally more fun, engaging, and enjoyable tuning.
My pick: Estrella

●Softears Volume S ($319) - These two have the same number of drivers, but the Studio 4 features an all-BA configuration. The Volume S offers a better unboxing experience and much more premium accessories, in my opinion. The leather case and modular cable are great, but the pelican-style case of the Studio 4 is more secure, which makes it better for travel. The Studio 4 features a solid resin build, which I like, but I prefer the aesthetics of the Volume S a bit more. The shell size of the Studio 4 is a bit smaller, but the Volume S fits me better. The tunings of these two are not vastly different. The Volume S has a U-shaped response with more bass emphasis, whereas the Studio 4 adheres to a more balanced and somewhat neutral tuning. The bass on the Volume S is just way better for my preferences. It's warm, inviting, and enveloping, while the Studio 4 is more geared towards speed and accuracy. I wouldn't necessarily call the Studio 4 bass light, but it sticks pretty close to neutral and won't put out more bass than the track calls for. The frequency responses of these two are basically identical from 300 Hz to around 5 kHz; however, vocals are a bit clearer and more forward on the Studio 4 due to the lower bass quantity. The treble also sounds a touch brighter, with more air and sparkle, but it is not harsh or sibilant. Technically, the Volume S offers a bigger and fuller soundstage, a slightly more natural timbre, and better dynamics. The Studio 4 is a bit more detailed, with better separation and balance across all frequencies. Both are enjoyable sets, but for different reasons. I feel the Studio 4 would be a great choice for those who like the midrange and treble of the Volume S but want a tamer, less colored bass. For me, the Studio 4 comes across as a bit boring, and I prefer the bassier and more colored tuning of the Volume S.
My pick: Volume S

●Letshuoer Mystic 8 ($989) - This might seem like an unfair comparison based on price, but both sets have an all-BA configuration, and they graph remarkably similarly. It's no surprise that the Mystic 8 offers a better unboxing experience and better overall accessories, although some may prefer the Pelican-style case of the Studio 4. As for build quality, the Mystic 8's metal shell is a bit heavier and more sturdy, while the Studio 4 is made of a lighter-weight resin. Both are very similar in shape and size, but the Studio 4 has a longer nozzle which also lacks a lip for tips. Their designs are quite different, although the Studio 4's normal black colorway would be closer to the Mystic 8. I personally prefer the Mystic 8's very unique aesthetic, but the Studio 4 is less polarizing. Both have very neutral tunings, but the Mystic 8 offers better extension on both ends and a certain engagement factor lacking in the Studio 4. From a purely quantitative point of view, both sets have a similar amount of bass, but the Mystic 8 is more balanced and even-kiltered with better resolution and texture. The low end of the Studio 4 cannot quite dig as low in the sub-bass, and it also has a bit more mid-bass presence with a slightly softer impact. In the midrange, the Mystic 8 presents a cleaner, more natural, and more organic quality to vocals and instruments. The vocals on the Studio 4 do not quite have the same natural timbre and maturity and are also a bit more accentuated, moving them away from truly neutral tuning. In the treble, the Mystic 8 continues its effortless neutrality and balance, while the Studio 4 sounds a bit rolled off and incomplete in comparison. The Mystic 8 sweeps the board in technicalities, but its biggest margin of victory is in the soundstage and the sense of depth and space around notes. The Studio 4 can sound almost claustrophobic during A/B comparisons. Overall, I find the Mystic 8 to be simultaneously more neutral yet more engaging and musical than the Studio 4. It performs better in almost every notable category and has a sense of depth, naturalness, and maturity that the Studio 4 simply cannot match.
My pick: Mystic 8

In conclusion:
The Studio 4 is not a bad set by any means, but neither is it a particularly great one. The tuning aims for neutrality and balance, and I feel it accomplishes this well, but I would like to see a little more engagement. My biggest complaints are some typical BA bass characteristics, a somewhat narrow soundstage, and an uneven treble response. The tamer bass is understandable given the neutral tuning, but the sub-bass extension, rumble, reverberation, texture, and resolution could be improved. I can't find much to complain about in the midrange as vocals are clear and have just a touch of warmth, which I enjoy. I would welcome them being brought a little more forward, and the lower midrange instruments could benefit from a little more weight, but that's being critical. The somewhat uneven treble does throw me off, though, and I wish it were more consistent. What I like about this set is that the neutral tuning remains pretty accurate for each individual track, so it could be a good choice for mixing or gaming. It also performs very strongly with instrumental and orchestral music and might warrant consideration if those are your main genres. If I could tweak the Studio 4 to better suit my preferences, I'd extend the soundstage, add more sub-bass extension and a bit more mid-bass for extra warmth, and accentuate the upper midrange to bring vocals more forward. Now, obviously, these changes would move the tuning away from neutrality, which is really the whole appeal of this set. Ultimately, the Studio 4 doesn't really do anything "wrong," but neither does it excel in any specific area. I think it is a bit overpriced and underperforms for $450, and there are much better value options available on the market today, at least for my preferences. I enjoyed my time with this set, and it has its strengths, but I am not sure I would choose it over some of the others I own. The Studio 4 is kind of like sitting in pajamas on a Sunday morning, channel surfing—comfortable, but not really engaging. I am happy to listen to it, but switching to other sets feels like stepping out of the house and taking a breath of fresh air.

Introduction​

Softears has established itself as a name in the audiophile community. Their latest offering, the Studio 4, is a neutral, four balanced armature (BA) IEM designed specifically for studio recording, mixing, and stage monitoring. In this review, we'll delve into the various aspects of the Softears Studio 4, evaluating its performance, build quality, and overall value, while also comparing it to some of its notable competitors.

Design and Build Quality​

The Studio 4 has a high-precision 3D printed medical resin shell, ensuring excellent consistency and stability. This thinner and lighter design, compared to previous Softears models, offers a more comfortable wearing experience. The outer diameter of the nozzle has been reduced, making it compatible with a wider range of ear tips, which is a thoughtful touch for ensuring a perfect fit for different people.

The IEMs come equipped with advanced cabling featuring 0.78 connectors, 10um ultra-thick plug pins, and a twisted-pair Oxygen Free Copper cable. These components collectively provide excellent connection stability, which is crucial for both studio and stage environments.

Sound Performance​

The Softears Studio 4 is designed to provide a natural, accurate, and high-fidelity sound experience, making it ideal for professional musicians. Let’s break down its sound characteristics:

Bass​

While the Studio 4 offers clear and precise bass, it could benefit from more texture and impact. The low frequencies are well-controlled and never overpower the midrange or treble, making it suitable for studio use where accuracy is paramount. However, those looking for a more pronounced bass presence might find it slightly lacking.

Midrange​

The midrange is where the Studio 4 truly shines. It delivers vocals and instruments with remarkable clarity and naturalness. This IEM excels in presenting a detailed and engaging midrange without sounding shouty or harsh, which is essential for long listening sessions in the studio or on stage.

Treble​

The treble response of the Studio 4 is another highlight. It’s realistic and extends well without becoming sibilant or fatiguing. This contributes to the IEM’s excellent detail retrieval and instrument separation, making complex mixes sound clear and well-defined. The treble performance ensures that high-frequency details are accurately represented, which is crucial for professional audio work.

Passive Noise Isolation​

One of the standout features of the Studio 4 is its excellent passive noise isolation. Thanks to the balanced armature design and the snug fit provided by the 3D printed shell, external noise is effectively reduced. This makes the Studio 4 an excellent choice for environments that require full isolation, such as recording studios and live stage performances.

Comfort and Fit​

The use of a high-precision 3D printed medical resin shell not only enhances the IEM’s durability but also significantly improves comfort. The Studio 4’s design ensures a secure and comfortable fit, making it suitable for extended wear. The thinner and smaller outer diameter of the catheter also contributes to the overall comfort, allowing it to fit more ear types and work well with various ear tips.

Technical Specifications​

The Studio 4 features a 4-driver, 3-way crossover design with a wide frequency response range. The frequency division architecture is specifically designed for professional audio interfaces, providing a nearly straight impedance curve. This ensures consistent performance across different sources, a critical factor for professional use.

Real-World Usage​

In real-world usage, the Studio 4 excels in providing a flat and accurate sound signature, these IEMs deliver a reliable and natural sound reproduction. The high-resolution audio playback ensures that every nuance of the audio is captured, making it an invaluable tool for musicians and audiophiles.

Comparisons​

To provide a comprehensive evaluation, let’s compare the Softears Studio 4 with some of its notable competitors:

Kiwi Ears Orchestra Lite​

The Kiwi Ears Orchestra Lite has warmer sound signature, which can be appealing to some listeners. However, it falls short in terms of detail retrieval and separation, especially during busy tracks. In comparison, the Studio 4 offers a more neutral and accurate sound with superior detail and instrument separation, making it a better choice for professional use. The Orchestra Lite could sound sibilant sometimes with some tracks, while the Studio 4 never sounded sibilant to my ears.

DUNU SA6 MK II​

The DUNU SA6 MK II is another strong contender with better bass and detail retrieval, a wider soundstage, and more textured bass compared to the Studio 4. However, the Studio 4 holds its own with its excellent midrange and treble performance, providing a more accurate and natural sound that is ideal for studio monitoring. While the SA6 MK II excels in certain areas, the Studio 4’s neutral sound signature and consistent performance make it a solid choice for professionals or those who prioritize neutrality over enjoyment. I personally prefer the bass, detail retrieval, clarity, separation, soundstage, and air of the DUNU SA6 MK II.

Elysian Pilgrim​

When compared to the Elysian Pilgrim, the Studio 4 has a slightly wider soundstage but lacks the same level of sub-bass and mid-bass impact. The Pilgrim offers better detail retrieval, a more defined airy treble, and superior instrument separation. The Pilgrim’s sub-bass and mid-bass are more pronounced, providing a fuller and more engaging sound. However, the Studio 4’s neutrality and accuracy make it an excellent choice for those who prioritize a flat frequency response for professional use or those who prefer a more forward vocal sound signature with less bass.

Conclusion​

The Softears Studio 4 is a meticulously designed IEM that excels in providing a neutral, accurate, and high-fidelity sound experience. Its excellent passive noise isolation, comfortable fit, and stable performance make it a valuable tool for professional musicians and audiophiles alike. While its bass could be more textured, the overall sound performance, particularly in the midrange and treble, is outstanding.

In comparison to its competitors, the Studio 4 holds its own with its accurate and detailed sound signature. It may not have the same bass impact as the DUNU SA6 MK II or the Elysian Pilgrim, but its neutrality and accuracy make it a preferred choice for many.

Introduction to Softears Studio 4 In Ear Monitor​

The latest (IEM), from the house of SoftEars. Studio 4 was released in the month of March in 2023. The pursuit of perfect acoustic correctness and precision is an unending adventure for those involved in professional audio and audiophile fans. The ideal instrument, one that can accurately capture every element of music and sound recordings, is needed for this voyage. Firstly thanks to @gadgetgod and CocneptKart for providing me with the opportunity to listen to these beauties, however by no means this review is influenced by any party.

With that said Let’s dig deep into Studio 4, revealing its technical wonders and revealing the subtleties of its sound character.

Build​

• High-Quality Resin Material: The IEM shells are meticulously crafted using a high-quality medical-grade resin material. This choice of material not only contributes to a premium feel but also ensures durability and longevity.
• 3D Printing Process: The use of a 3D printing process for the IEM shells allows for precise construction and a flawless finish. This method ensures consistency and accuracy in the manufacturing process, which is vital for achieving the desired sound characteristics.
• Resilient 2-Pin Sockets: The Studio 4 incorporates recessed 2-pin sockets. This design choice enhances the durability and long-term stability of the product, reducing the risk of wear and tear in the connectors over time.
• Cable Quality: Softears provides a high-purity twisted braided oxygen-free copper cable with the Studio 4. This cable is not only designed for sound quality but also aims to provide a comfortable and tangle-free experience.

Comfort​

• Ergonomic Design: The shells are designed with IEM ergonomics in mind, ensuring a comfortable fit in the ears. The smooth contours of the resin shells help minimise discomfort during extended use.
• Flexible Memory Wire: The included cable features a flexible and comfortable memory wire area behind the ear. This allows for a secure fit without causing discomfort or strain on the ears.
• Lightweight: The Studio 4 is engineered to be lightweight, reducing the sensation of weight or bulkiness when worn. This lightweight design contributes to overall comfort, making it suitable for long listening sessions.
• Isolation: The snug fit of the IEMs can provide effective noise isolation, allowing you to focus on your music without external distractions.

Sound​

Low​

The Softears Studio 4 establishes its sonic foundation with nicely balanced low-frequency performance. The sub-bass frequencies are thoughtfully tuned to align with the Harman Target, with ever so slightly more control. This meticulous tuning imparts a dynamic energy to the lows, endowing them with a captivating sub-bass resonance that resonates with controlled authority while still being in control and not offending, definitely not a basshead IEM, would not satisfy the bassheads out there for sure.
Despite the absence of a dynamic driver, Softears has ingeniously managed to craft a bass response that mirrors the characteristics of a true dynamic driver. The bass is punchy, remarkably controlled, and extends impressively into the sub-bass realm.

Mid​

The midrange performance of the Softears Studio 4 is a testament to tonal accuracy and timbral authenticity. Its lower-midrange is neutral and precise, ensuring that vocals and instruments are rendered with striking clarity and definition. Stepping into the upper-midrange, the Studio 4 takes a step forward.
This infusion of forwardness enhances vocals and instrumental solos, breathing life into performances with remarkable fidelity and emotional resonance. Overall, the midrange is strikingly well-balanced, with an exceptional presentation of vocals, and the pinna gain is thoughtfully calibrated to prevent any hint of shoutiness. In the realm of tuning, the Studio 4 stands out as one of the finest examples in its category.

Highs​

The treble out of these is outstanding, it extends well without being too sibilance, and the technical performance is also up to the price bracket and throws impressive details at the listener, Although not overly detailed it is still spacious and barely ever feels congested, The tonal balance of the lows mids and highs are perfectly done here.
The treble incisiveness is good as well, and provides a clean and fast image, although I would not consider it to be as smooth as higher-end offerings from Softears, the overall performance in the treble is noteworthy for this price point.

Comparison​

Softears Studio 4 vs Softears RSV​

Sound Signature:
Softears Studio 4: The Studio 4 is designed with a focus on a neutral and flat sound signature. It aims to faithfully reproduce sound in an accurate and balanced manner. Its bass is controlled and well-extended, the midrange is clean and balanced, and the treble is detailed without excessive brightness.
Softears RSV: The RSV, on the other hand, offers a sound signature with more emphasis on specific qualities. It features a robust and impactful low end, a precise and forward midrange, and a treble section that balances warmth and precision. The RSV’s sound signature is known for its engaging and dynamic character.

Lows:
The Studio 4’s bass is punchy, controlled, and extends well into the sub-bass region. It prioritises accuracy and balance in the low frequencies. Contrarily, the RSV excels in bass performance with a robust and impactful low end. It offers an engaging sub-bass rumble that resonates with authority, providing depth and power to the overall sound. The low end on RSV feels a bit more juicy and has more mid-bass authority and that oomph and authority.

Midrange:
Studio 4’s midrange is neutral and precise. It delivers vocals and instruments with clarity and definition, aiming for tonal accuracy. The RSV boasts a forward and captivating midrange. Its lower midrange is neutral, while the upper midrange embraces pinna gain ever so slightly greater than what Studio 4 aims for, adding a sense of forwardness to vocals and instrumental solos. This results in emotional resonance and remarkable fidelity. Mids on both of these IEMs are pretty accurate and well-balanced; one cannot go wrong in this department with either of these.

Treble:
The Studio 4’s treble is balanced, with a focus on accuracy. It offers natural transient attacks without venturing into sharpness. A mid-treble dip adds warmth to the sound, and the upper-treble maintains neutrality. RSV’s treble balances warmth and precision. It features a natural lower-treble and a mid-treble dip that is more than Softears Studio 4, which adds a warm, analog-like character to the sound. The upper-treble maintains neutrality and contributes to a balanced presentation. Although the quality of treble from RSV feels more tonally satisfying, the details and resolution however are better on Studio 4.

Soundstage:
The Softears Studio 4 is likely designed to provide a precise and focused soundstage, which is common in studio-oriented IEMs. The RSV has a tad wider and deeper soundstage, which contributes to a more immersive listening experience.

Softears Studio 4 vs AFUL Performer 8​

Lows:
The Aful Performer 8 features a controlled bass response with good impact and rumble in the sub-bass region. However, it leans towards a leaner and drier sound profile compared to most hybrid IEMs. The dynamic driver in the P8 allows it to have a good punch and rumble. While it doesn’t have a pronounced mid-bass, the bass quality is praised for its tight texture and overall quality. But the Studio 4 wins hands down in this aspect despite being BA driver the punch and authority is more and, everything is more enjoyable in it.

Midrange:
The P8 boasts high resolution and clarity in the midrange. Vocals and instruments are well-defined and clean. However, the mid-range can sound somewhat dry due to a lack of fullness. This results in a spacious and airy presentation. While some may prefer a fuller mid-range on the Softears Studio 4 , the P8 impresses with its detail, dynamism, and transparency. P8 does not put the vocalist in the front like Softears Studio 4, however, it positions everything in a more balanced form. Nothing is outstanding on its own, however, it has a very soothing vocal experience, Softears Studio 4 would sound much more vivid than P8 due to its vocal forwardness.

Treble:
The Aful Performer 8’s treble is crisp, dynamic, and detailed. It showcases excellent detail retrieval, allowing you to hear intricate nuances in music. While the treble is energetic and well-extended, it lacks the incisiveness and airiness that is produced by the Softears Studio 4. Aful Performer 8 sounds more comfortable for listening for a longer period of time, it never gets fatiguing, shouty, or sibilant, and it’s overall a more forgiving tonality. Softears Studio 4 in comparison has more airiness, and treble extension is on par however the details are more in the face with Softears Studio 4.

Soundstage:
The soundstage on the P8 is wide, although the IEM could be a great gaming thing due to its ability to pinpoint the sounds exactly, the soundstage on S4 feels a tad bit smaller, although not much of a difference here both IEMs have an average soundstage, but P8 wins marginally here.

Overall Rating​

Sound Quality:
Low Frequency (Bass): (4.5/5)
Mid Frequency: (4.3/5)
High Frequency (Treble): (4.3/5)
Comfort:
Fit and Ergonomics: (5/5)
Prolonged Wear Comfort: (5/5)
Overall Rating: (4.5/5)

TL;DR​

The Softears Studio 4 is a high-quality in-ear monitor (IEM) with a neutral and accurate sound signature, making it ideal for studio work and analytical listening. It offers controlled and well-extended bass, high-resolution mids, and balanced treble. The build quality is exceptional, and it provides a comfortable fit.

Technical Specifications:-
>Impedance: 12Ω.
>Sensitivity: 123dB/Vrms.
>Shell: Medical-Grade 3D-Printed Ear Shells.
>THD+N: <1%.
>Frequency Response Range: 5Hz-40kHz.
>Effective Frequency Range: 20Hz-20kHz.
>Interface: 0.78mm 2-pin Connectors.
>Termination Plug: 3.5mm Single-Ended.



I’ve been using the Softears Studio 4 for a while now, and I’ve got to say, they’ve really impressed me. Right off the bat, the build quality struck me. They’re made with this 3D printing tech that’s super precise, so every little part is just perfect. The material feels premium too—it’s this medical-grade resin that’s tough but doesn’t irritate my skin, even after hours of wearing them.

Design-wise, they’re pretty sleek. All black, nothing too flashy, but they have this professional look that I dig. They’re also surprisingly light. I mean, you can tell they’re solidly built, but they don’t feel heavy in your ears at all. And they fit really well, which is a big deal for me because I hate it when IEMs keep slipping out. These stay put, and they block out noise so well, it’s like I’m in my own little bubble when I’ve got them on.

Durability is another thing I’m happy about. I’m not gentle with my gear, but these have held up great. No issues with the cable or anything.

So yeah, if you’re looking for something that’s built to last, sounds amazing, and is comfortable for those long listening sessions, the Softears Studio 4 should definitely be on your radar.

The Studio 4’s cable is made of high-purity, oxygen-free copper, which is known for its excellent signal transmission1. It’s a durable choice, with a twisted braided design that’s meant to be tangle-resistant and sturdy.

However, I understand that compared to other IEMs in the same range, you might have come across some with cables that feel more premium or offer additional features that enhance the overall user experience. It’s a valid point, and many audiophiles do prefer a cable that matches the quality and aesthetics of their IEMs.

While the cable of the Studio 4 may seem average in appearance, it’s designed to be functional and replaceable. This means you have the option to swap it out for an aftermarket cable that better suits your style and preferences, thanks to the standard 0.78mm 2-pin connectors1. It’s all about finding that perfect match for your personal listening experience

•I am using @DUNU-Topsound Hulk Pro mini cable with this set




When you get your hands on the Softears Studio 4, you might find that the stock tips don’t quite hit the mark. They just don’t seem to do justice to the IEMs, so I tossed them aside. Instead, I’ve switched to using Dunu Candy tips, and the difference is night and day. The fit is better, and the sound isolation improves the overall audio experience.

If you’re looking to enhance your listening sessions further, you might want to consider trying out Spinfit W1 or JVC Spiral Dot++ tips. These are known for their comfort and the way they can fine-tune the sound profile to your liking. It’s all about finding the right match for your ears, and with these alternatives, you’re likely to notice a significant upgrade from the default set.


•Source Dependency: The technical prowess of the Studio 4 means it performs best with high-quality recordings. Poorly recorded tracks may not benefit as much from its capabilities, and the flaws in such recordings could be made more apparent.

•Tasting source - @Questyle M15/ @Cayin RU7/ @Shanling H5/ @Astell & kern SP1000M/ @FiiO BTR7/ @HiByMusic R3 ii/ @fosi AUDIO DS1/ @MOONDROP dawn pro/ @iFi audio hip DAC V2/ ifi zen DAC v2/ @Lg V60 (impedients unlock)/ @Sony Xperia 1 MK3


The Softears Studio 4 has garnered attention for its sound quality that’s both well-balanced and detailed. It’s praised for having an excellent tonal balance and clarity across the frequency spectrum, making it a solid choice for those who appreciate a neutral sound profile.

The bass is described as tight and controlled, which should please those who prefer precision over a bass-heavy presentation. The midrange shines with its natural and smooth character, ensuring that vocals and instruments are rendered with authenticity.

Treble in the Studio 4 is detailed and extends well, providing that sparkle and airiness without being overly sharp or sibilant. This makes it suitable for long listening sessions, as it doesn’t induce listener fatigue.

Overall, the Studio 4 seems to be a hit for those looking for an IEM that offers a professional studio sound at a competitive price point, especially within the sub-$500 category. It’s a well-regarded piece of gear among audiophiles and professionals alike.

The bass region is the foundation of music, providing rhythm and depth. In the Softears Studio 4, the bass is crafted with a focus on quality over quantity.

Pros:
•Quality Over Quantity: The bass is not overemphasized, which keeps the overall sound signature neutral and balanced. This approach allows for a clear distinction between different bass layers and contributes to the overall clarity of the music.

•Sub-bass: The sub-bass has a good rumble and is well-controlled, providing enough presence to enjoy the music without overwhelming the other frequencies. It has a good weight and hits deep, enhancing tracks with a solid low-end without bleeding into the mid-bass or mids.

•Mid-bass: The mid-bass is powerful yet tight, with a deep thump that brings energy to the music. The speed is just right, ensuring that every beat is well-defined and retains its power. This results in a detailed and impactful bass response, where instruments like bass guitars sound lively and natural.

Cons:
•Subtlety May Not Suit All: Listeners who prefer a more aggressive bass might find the Studio 4’s bass too subtle. The focus on neutrality might not satisfy those looking for a bass-heavy experience.

•Detail Over Warmth: While the bass is detailed, some might miss the warmth and fullness that comes with a more pronounced bass boost, especially in genres like hip-hop or electronic dance music.

Musical and Instrumental References:
•Electronic Music: In Daft Punk’s “Around the World,” the Studio 4 delivers the driving bassline with precision, allowing the synthetic textures to come through without muddying the mid-range.

•Rock Music: The opening bass riff in Muse’s “Hysteria” is tight and punchy, showcasing the Studio 4’s ability to handle fast-paced and complex basslines.

•Classical Music: The double basses in Tchaikovsky’s “Swan Lake” have a depth and resonance that add to the orchestral tapestry without overpowering the delicate balance of the ensemble.

In conclusion, the bass of the Softears Studio 4 is designed for those who appreciate a balanced and accurate bass response. It provides a solid foundation for a wide range of music genres without ever taking center stage unnecessarily. While it may not cater to every preference, particularly for those who favor a more bass-forward sound, it stands as a testament to the pursuit of high-fidelity audio reproduction that respects the integrity of the original recording.


The mid-range is often considered the heart of the music, carrying the bulk of vocals and many instruments. In the Softears Studio 4, the mid-range is treated with respect and attention to detail.

Pros:
•Natural Vocal Reproduction: The mid-range is where the Studio 4 truly excels. Male vocals have a richness and depth that make them feel close and personal, as if the artist is performing right in front of you. Female vocals are crystal clear with a lively energy that can make the hairs on the back of your neck stand up.

•Instrumental Clarity: Instruments in the mid-range, like acoustic guitars and pianos, are rendered with a clean and clear presentation. The separation between instruments is impressive, allowing each one to stand out without muddying the others.

•Warmth and Body: The lower mid-range has a slight warmth that adds body to the sound, giving a fuller experience, especially noticeable in genres like jazz or blues.

Cons:
•Potential Overemphasis: Some listeners might find the mid-range a bit too forward, which could lead to a sense of congestion in very busy tracks. This might overshadow the subtleties in the music, especially in complex orchestral pieces.

Musical and Instrumental References:
•Jazz: The upright bass and saxophone in Miles Davis’ “Blue in Green” have a lushness that fills the room, thanks to the Studio 4’s mid-range capabilities.

•Rock: The rhythm guitars in The Eagles’ “Hotel California” have a presence and definition that let you hear every strum and pick on the strings.

•Classical: The cellos and violas in Yo-Yo Ma’s rendition of Bach’s Cello Suites are warm and resonant, with each note distinct and full of emotion.

Overall the mid-range of the Softears Studio 4 is a well-crafted balance of clarity and warmth. It brings vocals and instruments to life with a naturalness that’s both engaging and immersive. While it may not be perfect for every genre or every listener, it provides a sound that is both professional and accessible, making it a worthy consideration for those seeking a high-fidelity audio experience.

When we examine the treble of the Softears Studio 4, we’re entering the realm of high-frequency sounds where the magic of clarity and detail comes to life.

Pros:
•Clarity and Precision: The treble is crystal clear, allowing every high note to be heard with precision. It’s like the clear ring of a bell in a quiet room—distinct and pure.

•Instrumental Fidelity: High-frequency instruments are reproduced with remarkable fidelity. The tinkle of a high-pitched triangle or the bright chime of a celesta is heard with a lifelike presence.

•Vocal Smoothness: Sibilant sounds in vocals, which can often be piercing, are smoothed out beautifully. Listening to the soaring vocals of Freddie Mercury in Queen’s “Somebody to Love” is a treat, with every ‘s’ and ‘t’ sounding smooth and controlled.

Extended Listening: The treble is tuned to avoid listener fatigue. You can enjoy your favorite albums back-to-back, like Pink Floyd’s “The Dark Side of the Moon,” without any discomfort.

Cons:
•Reserved Sparkle: Some audiophiles might find the treble slightly reserved. While it’s detailed, it doesn’t have the sparkle that some may expect when listening to the cymbals in a live jazz recording.

•Instrumental Energy: While the treble is clear, it may lack a bit of energy. The crisp attack of a snare drum or the bright brass in a symphony orchestra might not have the bite that some listeners prefer.

•Soundstage Perception: The precise treble contributes to a wide soundstage, which is excellent for orchestral pieces like Beethoven’s “Symphony No.9.” However, this can sometimes make intimate acoustic sessions feel less cozy. (Not exactly cons)


Musical and Instrumental References:
•Classical Music: In a piece like Vivaldi’s “Four Seasons,” the Studio 4 allows the violins to sing with a natural brightness, capturing the nuances of the bowing technique.

•Rock Music: The electric guitar solos in AC/DC’s “Back in Black” are delivered with enough detail to appreciate the grit and distortion, yet without any harshness.

•Acoustic Performances: The fingerstyle guitar work in “Dust in the Wind” by Kansas benefits from the treble’s clarity, allowing each plucked string to resonate clearly.

In summary, the treble of the Softears Studio 4 is designed for those who value clarity and detail over brightness and energy. It offers a refined listening experience that’s easy on the ears, making it suitable for extended use. While it may not satisfy those seeking a more vibrant treble response, it stands as a solid choice for listeners who prefer a more laid-back treble presentation.

•Imaging and Layering: The Studio 4 excels in imaging, placing each instrument in its own distinct space. This creates a three-dimensional soundstage that makes listening to complex arrangements, like a live orchestra, a truly immersive experience.

•Detail Retrieval: With an impressive ability to unearth the finer details in music, the Studio 4 captures the subtle breaths a singer takes, the light touch of fingers on a piano, or the gentle brush on a drum skin.

•Note Separation: The separation of notes is precise, allowing listeners to appreciate the individuality of each note in a chord. This is particularly evident in acoustic genres, where the strumming of a guitar or the pluck of a violin string can be heard distinctly.

•Resolution: The resolution is high, meaning that the music is presented with clarity and definition. This is beneficial when listening to high-resolution audio files, where every nuance is intended to be heard.

Musical and Instrumental References:
•Classical: In Beethoven’s “Moonlight Sonata,” the Studio 4 allows each piano note to be heard with clarity and precision, from the softest pianissimo to the most robust fortissimo.

•Jazz: The intricate play between the double bass and the saxophone in John Coltrane’s “Giant Steps” is rendered with meticulous detail, allowing the listener to follow each instrument as if they were in the room.

•Rock: The layered guitar work in Pink Floyd’s “Comfortably Numb” is showcased beautifully, with each layer of sound given its own space, making the solo truly stand out.

• The Softears Studio 4 is a technical marvel that will satisfy those who seek to dissect and appreciate every aspect of their music. It’s a tool for the true audiophile, designed to reveal the layers and textures of sound that are often hidden. While it may not be the perfect fit for everyone, especially those who enjoy a ‘warmer’ or ‘bassier’ sound, its technical capabilities are undeniably impressive.


Overall Sound: The Softears Studio 4 earphones give you a sound that’s rich and full. They make music feel alive and detailed, from the deepest bass to the highest notes. Everything sounds clear and separate, so you can hear each instrument on its own and enjoy the music the way it was meant to be heard.

Recommendation: If you love music and want to hear it with all the depth and detail that your favorite artists put into it, the Studio 4 is a great choice. They’re comfortable to wear, built to last, and they make all kinds of music sound amazing. Whether you’re into classical, rock, jazz, or pop, these earphones will make your listening experience better.

Brand’s house sound​

Studio 4 might be one of the top rising stars of Softears till date. Softears is a very well-known brand for it’s philosophy towards neutrality. They always provided music with out most honesty in their IEMs. Not only that but they managed to make this tuning very enjoyable throughout the years they are in the business. They discarded the thought that “Neutrality is boring”.

What I like about the brand​

The best thing I like about this brand is its commitment to the research and development of each of their products. They don’t release products left and right saturating the market even more. Each of their product be it Softears Twilight or RSV is beautifully crafted and well-researched. This continues with Studio 4 also.

Disclaimer​

Studio 4 was provided to me by ConceptKart. They always provide me equipment for review. They haven’t influenced me anyhow to say anything good or bad about this product. All thoughts and opinions are mine alone. Take a look at this product on their website.

Softears Studio 4​

Price Competition​

It retails for about $449 worldwide. At this price point, there is a huge number of IEMs to challenge it. I think it competes extremely well in the market right now, making it a glowing option to consider while purchasing an IEM even after 1 year of its release. In this price point, AFUL Performer 8 is another contender to consider & I will compare it at the end of the review.

Philosophy of the IEM​

The philosophy behind this IEM is pretty straightforward. It is neutral as its name suggests. But neutrality can be unforgiving where this IEM stands out in the crowd. Even though it is neutral, there is nothing about this IEM which is boring and non-captivating. Bear in mind that I always write reviews after I am well passed my honeymoon phase.

Tech Specs​

This IEM consists of four BA drivers made by Softears itself accompanied by a three-way crossover. But I dare you to judge this IEM based on the driver setup it has. Housed in a very stealthy resin 3D-printed shell. The cable along with this IEM is pretty sturdy and easy to manage without having too much memory as such.

Package​

Softears Studio 4 comes with a very strong and sturdy pelican case which is waterproof. IEMs are covered in mini pouches to keep them scratch-free, which is a great addition to the packaging. Although ear-tips are provided but I reviewed them with Divinus Velvet tips for the comfort it offers.

Design​

The IEM shell is one black pebble with lettering of “Softears” & “Studio4” on each of them. I very much like the stealthy look of the IEM. It blends perfectly in crowded places and doesn’t seek attention from people around. The shell is small enough in-depth, unlike RSV.

Build Quality​

The build quality seems pretty solid. The sets are neither heavy nor light. They provide confidence as such that a few drops might seem fine. Although I haven't drop-tested it myself overall they seem very sturdy.

Initial Sound Impression​

Studio 4 welcomes you with a very lifelike sound with a very accurate soundstage. The first thing when you put them in your ear, you will notice how accurate they sound. Remember I told you that it doesn’t sound boring? I will give you the bass so much so that is beyond what I expected from a neutral set. The midrange is extremely good and natural. Each and every part of the midrange is very tasteful. The treble is very neutral too. You won’t find any sharpness, not it will sound dark anyhow.

Comfort & Fit​

So far Studio 4 is not comfortable for me due to only one reason. Pressure build-up due to no ventilation. Being an All-BA set it doesn’t need ventilation and ventilation might screw up its SPL. Although a careful insertion is always preferred with a good enough tip selection. If inserted with jaws open it eliminates most of the pressure build-up.

Tip Rolling​

It does change its sound due to different tips but it is not as evident. The nozzle is big enough to send vibrations directly to your eardrums without interfering with the tips in most cases. However, note that the pressure buildup avoidance is a big reason to tip roll.

Objective Sound Impression​

Bass​

There is a very subtle 4db sub-bass extension in the 20hz. And it makes an arch through the midrange. Typically I don’t like this midbass elevation but in this IEM this works beautifully. There is a contrast between subbass and midbass but it is not enough to make it sound separated of any sort. It might seem that the decline from 100hz would contribute to the thinness of the midrange or it could lack any warmth in the lowermids, but this is not the case fortunately. The warmth is there and it doesn’t sound thin anywhere.


Bass overall is better than I expected to be honest. First of all the drivers might sound like not much but trust me on this, it feels like a cohesive DD nonetheless. It is enough snappy to maintain the speed of the attacks and the falloff is slow enough so it doesn’t feels like it is rushing to deliver bass. The gradual falloff is very analogue like and won’t feel like there is anything jumps out to you. In one word it is very cohesive and well-controlled while reaching deep.

Midrange​

At 200hz there is a dip noticeable in the frequency response which is not noticeable at all. This might’ve contributed to the overall thinness of the IEM which is not at all present. It is extremely neutral and the vocals shine in their separate places. There is also a hump starting at the 1khz and a sudden drop-off. Which is a very wise thing to do to increase the soundstage while maintaining the warmth. The Eargain peak is also fully extended with a very nice touch after 2.5khz, making the overall sound smooth.


Overall the mids are the crux of this IEM. It is so well-tuned that it can easily compete with higher-end products in the market if mids are the only thing you are considering. The timber of this IEM is excellent for the price to say the least. Every instrument sounds good with this IEM, every instrument sounds life-like. No hint of nasalyness and hunkiness can be spotted anywhere. The vocals are beautiful for both males and females. Full of texture and warmth as well as airiness when needed.

Treble​

After 4khz the treble is very inoffensive. There are dips here and there and there are no peaks that could feel unpleasant. The dip in 6k is a brave choice since it consists of some harshness in most of the genres. Although the dip after 9khz can be fixed to give it a more shimmering feeling that could really benefit the sound overall for a treble head like me. Rest the extension is there and air can be felt but it is not overloaded. In short, the treble is very safely tuned and well-refined.


For me, the treble felt a little less. As a neutral-tuned IEM I would’ve liked a more revealing nature of the treble. On the opposite side it handled poorly recorded songs very well and with ease. The poorly mastered tracks are nowhere sounded harsh and peaky, not tracks with great mastering sounded jaw-dropping due to the safe tuning.This kind of treble would be very good for someone who is treble-sensitive.

Subjective Sound Impression​

Resolution​

The resolution of this IEM is above average. The surprising thing about this IEM is that even though the treble is not elevated too much it is still producing contrasty details. From certain cues to trailing edges everything is prominent.

Soundstage​

The sound stage is not very big but it is very well executed. It revolves around your head in a sphere and no claustrophobic nature I felt there. This created an overall personal feeling while listening to any song, The voices do come from the front and are well positioned. It adapts to the song very well, if the number requires a big sound stage it will get big if it requires a personal sound stage it will also provide that.

Imaging​

Imaging is above average too. The separation is there between the instruments but they are not pinpointed although easily localized.

Drivability​

The drivability is moderate. It can run through sub $30 dongle DACs easily but upgrading sources would result in a more weighty, textured and well-defined sound throughout the frequency range, especially the mids and lower end of the spectrum.

Conclusion​

Few IEMs in this hobby can do everything. Neutrality, which provides true to the mastering. Forgiving enough to make everything sound good. Low end enough to satisfy EDM/Hip-Hop. Mids that could make the timber extremely pleasant to listen to. Treble to satisfy both sensitive and treble head. This IEM covers everything. I couldn’t recommend this enough.

Comparison​

AFUL Performer 8​

Resolution is slightly better in P8 (Mainly because of Psychoacoustics). The bass sounds better in Studio 4. The midrange is a bit more weighty on Studio 4 too. Treble is the main factor to consider while choosing any one of these. P8 is snappy and full of treble, be it air or extension, where Studio 4 is very controlled and subdued than the P8.


You can’t go wrong with any one of these. If you prefer extended and elevated treble then go with P8 if you want a reference grade treble go with Studio 4.

RSV​

RSV is more mid-forward, more rolled off in the treble. Details and resolution are better in Studio 4. Timber is a hint better in RSV. Both suffer from air-pressure build-up and fit and comfort is better in studio 4. They inherit the same DNA so nothing much else to dissect about.

Pros​

• Midrange
• Timber
• Resolution

Cons​

• Air Pressure Build-up

NON AFFILIATED LINKS​

Buy Softears Studio 4 - in India


Buy Softears Studio 4 - Outside India

Review Of The Softears Studio 4​

Introduction​

Softears is one of the most professional firms I've ever experienced, based on my own experiences with their infamous IEMs like the RSV and Twilight, but they've also been embraced by many audiophiles. This Chinese firm was founded in 2017 and has been developing professional high-end products, particularly in-ear monitors. They have recently begun to experiment with other areas, such as accessories, to widen the reach of their ingenuity and inventiveness. They recently announced a new professional IEM called as the Studio 4, and I was fortunate enough to receive a pair for evaluation. But before we go any further, I'd like to clarify a few issues.

Disclaimer​

*This is a review unit, courtesy of Concept Kart. All thanks to them for providing. And as I've said in all of my evaluations, the same is true for this one: all of the concepts I've expressed below are entirely my own, original ideas that haven't been influenced by anyone else. If interested, go to this link.
*I am not associated with the connection, and I receive no financial assistance from anyone.
*For the remainder of the review, I will refer to these IEMs as “Studio 4.”
*I am using different Ear-tips for convenience and better versatility.
*Finally, I will only evaluate Studio 4 based on their performance, even though I will explain how it feels and seems physically and aesthetically.

Specification​

The Studio 4 has an all-custom balanced armature set made up of four drivers connected to a three-way crossover. The shells are composed of 3D-printed medical resin, and like with other BA IEMs, they lack a pressure release port, causing pressure to build up in the ears. The Shells are dark black, with Softears inscribed on one side and Studio 4 on the other; altogether, Studio 4 is quite professional. Even though I have difficulties with pressure buildup in my ears, The Studio 4 were bearable because to their simple and ergonomically formed body; they fit well and the comfort was enough, but not for extended lengths of time due to pressure buildup; nonetheless, with tip-rolling, it was manageable. The cable that is provided looks and feels quite expensive, as one would expect from a professional studio set. The cable terminates with two pin connections on one end and a straight, single-ended 3.5mm termination plug on the other. The additional accessories include three pairs of eartips in various sizes, a cleaning tool, a 3.5mm to a quarter-inch adapter, a velvet storage pouch for IEMs, a cleaning cloth and a highly practical pelican case. According to the technical specs, the impedance is 12 Ohms and the sensitivity is 123dB. The frequency response ranges from 5Hz to 20kHz, and total harmonic distortion is less than 1%.

***Above Image Credits***

Sound​

The Studio 4 has one of the most precise and targeted tunings that I have ever had the pleasure of experiencing. The Harman target is followed objectively, but the resulting sound is much more than just a flat response. Instead, it offers a fuller and more present upper treble response, which is a delight to the ear. I must say that this tuning has become one of my favourites, particularly because it places less emphasis on the mid-bass and more on the sub-bass, yet it still manages to maintain a pleasing tonal warmth in the overall mix. What struck me most about the Studio 4 is the quality and timbre of the mid-range notes. They sound properly rounded and natural, allowing the notes to blend seamlessly. This is especially impressive considering that Studio 4 is an all-BA set, which often tends to sound fatiguing with a less full response. The Studio 4, on the other hand, delivers a non-fatiguing and safe overall sound, while also maintaining a fuller response that places the details precisely where they should be. I have experienced many other IEMs in the same price range, but most of them tend to sound more balanced or mid-centric, with some focusing on crisp and detailed notes. Unfortunately, this often leads to metallic or artificial characteristics being introduced, which can be distracting. Thankfully, Studio 4 does not suffer from any of these issues, and it is a pleasure to listen to. Let’s delve deeper into the sound and find out more about it.

Treble​

The response from the treble area is as expected: linear and crisp, with outstanding clarity and notes that seem larger and more calming to listen to. The region represents an unquestionably safe sound, with all singers and instruments providing crisp and fresh-sounding notes that are not harsh or tinny, but instead balance the tonal quality. The upper treble is extended and airy, but it does not provide a huge or cavernous sound since the entire environment is filled with a good awareness of note dynamics and revelation. Specifically, the voices sound quite pleasing and on the spot. The lower treble brings more aggressive singing and instruments, allowing for a more forward approach and optimum seating, resulting in a more complete experience. Though there is a tinge of staleness in the bodied notes, which may get monotonous for some since they are not light or open sounding, as I previously stated, they are "on point." The vocals are lively and mature, but the instruments provide well-toned notes, resulting in an organic response. As a result, the treble area is presented sublimely, linearly, and extensively.

Mid Range​

In the midrange, it has a very safely calibrated response that does not sacrifice tonal quality and produces more bodied notes with enough tonal accuracy. Though it is more vocal-oriented, the instruments as a whole feel somewhat muted. The main reason is that the voices are advanced while delivering a tonally warm sound that lifts the lower mid-range and builds up a filling response that partially obscures the instrument separation, eventually merging in the overall response. The upper midrange resonates with the same vigour as the lower treble but adds weight to the sounds. The vocals are the star of the show; whether male or female, both tend to sound true but have a feeling of closeted nature in that even after sounding forward, they do not open up too much, maybe owing to how the metallic and crisp notes are not overemphasised in the upper frequencies. The instruments have rounded notes and provide a solid sound, but as previously said, they fit in with the overall response and do not stand out. The lower midrange has an excellent tonal balance due to the warmth in the mix, which makes the notes weighty and thick, allowing for a crisp response. Also, because of how the BA responds, the quality is quite clear and revealing, to the point that it doesn't sound drowned. While I feel such a reaction is faithful, some may find it uninteresting. As a result, the overall presentation of the midrange area is natural, full-bodied, and upfront.

Bass​

I think Softears has done an excellent job tweaking the bass. I have three reasons why. The first is that, while the emphasis is on the sub-bass, the quality and presence of the mid-bass region are not lacking; the second is that, even when using a BA for bass, it does provide a warm yet clear and textured quality bass; and the third is that the warmth that flows into the lower mid-range does not collude with the lower mid-range and allow any influence over the higher frequencies other than bringing warmth and allowing for a natural response. Though I feel the amount and natural decay of the notes to be lacking, I provide a handful of bass to compensate for the dynamic presence. The same can be said about the mid-bass and how controlled it is, which causes the slams and thumps to strike in a very premeditated manner, at least that's how it seems. But, even for an all-BA IEM, I think it's great to have a very precisely tuned bass that is both controlled and warm. Overall, the bass area is textured, detailed, and well-presented.

Technical Performance​

The Studio 4 excels in technical abilities, demonstrating a promising prowess throughout the presentation with its equality-focused features. Whether it's staging, imaging, or resolution, it maintains the appropriate quality that places it among its peers. Let's be more specific.

Soundstage, Sound Imaging & Separation​

The surrounding sounds are more holographic, providing a clear impression of what is left, right, and in front of you. Though the response is spaced out left and right rather than front and back, it sounds closer than it seems. The same way I felt when I heard Softear's more premium product, the RSV. The imaging is likewise excellent, given that the notes are rounded and full-bodied but could have been crisper. The distance between the notes is enough to make them seem larger, although the distinction suffers slightly, particularly while listening to busy tracks.

Speed & Resolution​

The details aren't overly expressive, but they accomplish the job by displaying good macro and microelements. The assault and fade of the notes make me doubt a BA response, despite the fact that it is quick enough to resolve and sounds more natural. The magnificent nature prevents it from sounding chaotic.

Sound Impressions ​

Sources​

Sony WM1A - While listening to Studio 4 with WM1A, the response widens and extends, allowing the notes to be more open and distinct, highlighting their integrity and idiosyncrasies. The midrange, which sounded strong and aggressive, sounds properly staged, and the notes are nicely positioned, which improves overall technical ability. Both the voice and the instruments shine brightly. The bass and treble stretch further, leaving a hypnotic response; the bass sounds emphasized but in quality rather than quantity, implying that the bass is better spread out and the presence is less exaggerated overall. The treble is smoothed out, bringing air into the overall response. Finally, it transforms a dull-sounding set into an engaging one.

Tempotec V6 - While listening to Studio 4 with V6, the midrange becomes more dominant while the treble response is slightly hidden/tamed, but the bass is not completely suppressed; instead, the sound is richer and warmer. The whole presentation suggests that it is a multi-driver arrangement with a specialized dynamic driver, rather than an all-BA set.

Simgot DEW4X - I observed a substantial boost in audio response clarity and resolution after pairing Studio 4 with DEW4X. The soundstage became more concentrated and tighter, adding depth to the overall response. In my perspective, this improved the audio quality significantly. The details in the vocals and instruments were communicated authentically, resulting in a more engaging listening experience. The treble was more open without sounding overly airy, and the mid-range was somewhat recessed, making the vocals sound more defined. The high octaves were very well-represented, outperforming all of my other audio sources. The bass was mild, yet it had a strong presence without becoming overbearing. Overall, the audio response was more monitoring-specific, which helped to bring out subtle subtleties in the mix.

Tracks​

Millet - Anytime Anywhere
Anri - I can’t stop the loneliness
Kohana Lam - A Few Sentimental
Kohana Lam - Loving Me, Loving You
Uru - Kimino Shiawasewo
Uru - Kamihitoe
Kujira Yumemi - Kenka
Majiko - Kokoronashi
Anly - Sukinishinayo
Kohama Lam - A Few Sentimental
Kohana Lam - Loving Me, Loving You
Miliyah - Kono Yumega Samerumade
Rokudenashi - The Flame Of Love
Yu-Peng Chen - A New Day with Hope
Yu-Peng Chen - Another Hopeful Tomorrow
Yu-Peng Chen - For Riddles, for Wonders
Valentino Khan - Satellite
Kai Wachi - Happier By Now
Jawns - Erotica
ISOxo - how2fly
Kai Wachi - Happier By Now
Weeknd - Popular
YUNGBLUD - When We Die(Can We Still Get High)
Bring to Horizon - Kool-Aid
Middle Kids - Bend
FLETCHER - Leads Me On
Loathe - Aggressive Evolution
The Weeknd - Save Your Tears
Sigrid - Burning Bridges
AURORA - Black Water Lilies
AURORA - Runaway
X Ambassadors - Renegades
Lupe Fiasco - Words I Never Said
Macklemore & Ryan Lewis - Can’t Hold Us
Gotye - Somebody That I Used To Know
Jay-Z - Run This Town
Lady Gaga - Poker Face
Lady Gaga - Just Dance
Ladytron - Ghost
Travis - Love Will Come Through
LINKIN PARK - Somewhere I Belong
DJ Shadow - Six Days (Remix)
Hoobastank - The Reason
Ricky Martin - I Don’t Care
Tool - 7empest
Tool - Vicarious
A Flock Of Seagulls - Space Age Love Song
Zack Hemsey - Vengeance
Elton John - I’m Still Standing
The Moody Blues - Nights In White Satin
Micheal Sembello - Maniac
Guns N’ Roses - Sweet Child O’ Mine
A.R. Rahman - Kun Faya Kun

Conclusion​

So, after giving it all, Studio 4 has left a lasting impact with its sound and experience. To be honest, Studio 4 accomplishes nothing unusual or better; rather, it is the height of perfection in terms of tuning and sound. The way the BAs are adjusted and their distinctive characteristics prevent me from comparing them to other IEMs. It's only that the IEMs are tuned extremely precisely, yet it sounds safe and natural to everyone who gets to experience them. This IEM has effectively removed the distinction between pros and audiophiles. I won't say that these shine in this region or this portion since they excel in overall sound. However, beware of the monotonous sound that could catch you off guard, as the name implies, it sounds like a reference monitor. With that stated, I would highly suggest it to any audiophile for its excellent tuning and experience.

Thanks to Concept Kart and gadgetgod for the review tour of the Softears Studio 4.
As always, there is no incentive for me to post anything favorable unless I actually feel so in the product.

Softears have had a good run in terms of quality iems at the mid-upper budget segment (or lower luxury?) of the price range.

The Studio 4 is another such example of well done iems for a specific target audience.

Build, package and fit

The Studio 4 iems came in the stock padded pelican like case which feels luxurious. A lot of much higher priced iems come with lesser box than this.

The iems are covered in a drawstring velvette pouch to protect the iems. The iems themselves are resin based shells with a minimalistic lettering on the shells.
The iems come with 2-pin detachable connectors and slightly above average sized nozzles. This did cause a bit of a pain for me to use. These are not monstrously big,
but comparable to nozzles of BGVP iems or the CA Solaris.

The cables are strong and lightweight with very little to no microphonics. The review unit came with the 3.5mm termination and that was used for the review.

I paired the iems with the Penon Liquer tips, as they help with large nozzles for me. Aside from the nozzles, the fit is pretty good with the iems almost feeling weightless.
This is a good fit for long term studio monitoring.

Sound Impressions

The Studio 4 is a neutral with 4 BA drivers doing the duties of sound reproduction. They are tuned to not add any color to the sound, and this is the case with the iems.

They are easily driven (considering a low 14ohm impedance) and dont seem to carry forward any interference noises. Well done from a monitoring perspective.

Overall signature - The iems are mostly neutral with a rounded sound, with no peaks anywhere in the spectrum. As a result, people looking for treble extension, brightness and bass slam could find it boring.

Bass - 3.5/5 - The bass detail is good, with bass guitars, double bass and percussion sounding just about right, without any added emphasis.
Mids - 4.5/5 - Vocals come through with a lot of nuances and detail. This is true of both female and male vocals. No recession of the vocals in the overall sound. Inhalation, trills, and any detail in the track is represented well.
Treble - 4/5 - Treble is well represented in terms of quality. There is no sibilance or brightness from the instruments. Speed is not an issue again, with fast decay thanks to the all BA setup.
Stage - Intimate - The listener is put in front of the performers in a intimate setup to savor and monitor all the details required.

Conclusions
The Softears Studio 4, after a detailed listen, is a very good iem that is an excellent monitor.
However, for genre that dont need sharp treble, deep bass slam, will be well rewarded with the iems from a pure music enjoyment. This is especially the case with true instrument based presentations including classical, rock, jazz, blues etc.

These may also work well with movies and games, where details are important, without the listener being fatigued. Easily one of the better mid budget iems that I have reviewed in the recent past.

Founded in 2017 in Shenzhen, China, Softears is not a new company. With the Studio 4 in many recommendation lists, I decided to give it a shot.
Studio 4 in-ears professional monitor - 4 BA Drivers.

I buy the set with my own money.

In the search for an IEM that delivers something similar to the Dunu SA6/SA6mk2 but less direct and more balanced, I found an excellent alternative in the Studio 4.

Starting with the positives:
The bass is so well-tuned that it sounds like DD drivers! It's precise, has a good body, good definition, and surprisingly, impact! Listening to songs with double bass drums, the definition and cutting are virtuoso. The question here is whether this is musical enough to please those who don't necessarily work professionally with audio. I would say yes. I have the impression that more musical BA bass delivers compromised impact and is "longer," which is detrimental if you listen to songs with double bass drums. Studio 4 delivers bass in a monitor way with a touch of fun. It's not analytical, but it's not purely fun either. Never dry. If you want definition in the bass and impact, it fulfills its role very well.

The mids are very well-tuned and deliver a degree of detail above average. Frequencies that are normally hidden come loose and form an incredibly interesting detail bed. In my opinion, this is the most attractive point of this IEM! The mids are musical enough to be captivating. Regarding the pinna gain, I have NO criticism. I don't find any critical points in the mids! It's the part I liked the most. Excellently executed. Details, musicality, pinna – you have the complete package. Here, I disconnect and connect very well with the music, and even though I've heard several IEMs, the Studio 4 delivers a unique version and details that will make anyone extract hidden details from the songs.

Treble:Sounds recessed, and I found it a good decision that enhances the mids. They are not evident, but I didn't miss resolution or articulation in them. It's not the frequency that will be the highlight of this IEM, but there is no negative criticism here.

Negative aspects:The cost is, in part, the musicality. Studio 4 is not sterile, but certainly calling it musical would not be a correct description. Now, it would be more accurate to say a musical studio monitor. It reminds me a lot of what the Etymotic ER4XR does but with more bass and details.

Comclusion:
I think if you like the Aful P5, Truthear Nova, or Moondrop Blessing/S8 and are looking for a slightly more exciting upgrade but still a bit laid back, without failing to deliver an excellent level of detail, this IEM can make you happy.

Review no longer relevant

This Softears Studio 4 IEM Review was originally posted on my website.​

About the Softears Studio 4​

Company Overview​

Softears is a Chinese brand that focuses on technology, research and development, and innovation. They are a young but experienced company. Their founder started working in audio in 2014. The studio was founded in 2017 in Shenzhen, China’s Silicon Valley. And in 2019, they set up an independent lab for R&D and their own factory in Chengdu, a Humanistic City.

Technical Specifications​

• Impedance: 12Ω
• Sensitivity: 123dB/Vrms
• Shell: Medical-Grade 3D-Printed Ear Shells
• THD+N: <1%
• Frequency Response Range: 5Hz-40kHz
• Effective Frequency Range: 20Hz-20kHz
• Interface: 0.78mm 2-pin Connectors
• Termination Plug: 3.5mm Single-Ended

What’s Inside the Box​

• 0.78mm 2 pin 3.5mm single-ended cable
• Carrying leather pouch
• Eartips
• Cleaning brush
• Lanyard
• Hard carrying case
• 6.35mm male to 3.5mm female adaptor
• Cleaning cloth
• Manual
• 2 mini pouches for each driver
• Drivers

Review​

The sources I used for testing were the Cayin N6ii Digital Audio Player (DAP) with its stock A01 motherboard and my laptop with a Venture Electronics Abigail Pro fed to an iFi Zen Can headphone amplifier.

Frequency Response​

Frequency response courtesy of Practiphile.

Experience​

I used the stock ear tips and cable that came with the Studio 4. The fit was very comfortable for me and provided good passive noise cancellation. Like most IEMs, the Studio 4 is easy to drive.

Music​

The first time I listened to the Studio 4, I was playing Daft Punk’s “Fragments of Time” featuring Todd Edwards. Immediately, I was blown away as I heard a nuance in Todd’s voice at the 0:43 mark that I wasn’t able to pick up on with previous IEMs I’ve tried. It was so pronounced that I promptly tried another set just to confirm if it was really there. And it was—just very subtle, too subtle for me to notice before.

The Studio 4 simply sounds right—each instrument has an accurate timbre, and it provides clarity and natural decay across the spectrum. The treble is well-extended without being fatiguing, and the bass does not bleed into the mids. The overall frequency response is tightly controlled. The vocals are well-positioned, with a rich, lush quality for both male and female vocalists. Laufey’s voice on this set is sublime.

On busy tracks, the Studio 4 handles congestion admirably. I listened to both Wolf Alice’s “The Beach” and Billie Eilish’s “Happier Than Ever.” Despite the chaotic moments in each track, I could still make out each instrument clearly separated. There was no noticeable shoutiness or peaks that often emerge when an IEM struggles to handle crowded frequencies.

Gaming​

I used the Studio 4 for gaming, mainly playing Overwatch. Right away, I noticed more body and impact with gunshot sounds. I could easily determine the direction and distance of enemies. The vertical imaging performance was average—nothing special, but still good overall. The Studio 4 provided an immersive and fun gaming experience.

Conclusion​

In short, if you want an all-in-one IEM for music and gaming and have $449 to spend, the Softears Studio 4 is a no-brainer choice. If I could only own one IEM, this would be it. It provides exceptional value, and I can confidently say it has endgame potential for many listeners. The Studio 4 strikes a tonal balance that should satisfy most, unless you specifically want more treble or bass boost – but that comes down to personal preference.

I hope you enjoyed my review of the Softears Studio 4 In-Ear Monitor. Again, huge thanks to Practiphile and HiFiGo for giving me the opportunity to review this set. No monetary compensation or instructions were provided – this is my fully unbiased take on the Studio 4.

"Music is one of the purest forms of poetry where a man can convey its feelings and expression."


In choosing a professional-grade in ear monitor specifically for an audio and studio engineer or a professional musician. Being meticulous and observant are one of the attributes of an audio and music professional who looks for a set that is suitable for its working tool on recording studio and its specific preference for improving its work rate and the quality of tracks that they mixed, recorded and produced. And as for professional musicians, they want an IEM for stage and studio usage. As we all know that these professional-grade IEMs are quite pricey and it has a limited scope of usage.





This is where the SoftEars enter the scene, they are offering a reference studio-level set that is way affordable compared to some other contemporary products with same functionality and yet has an exceeding tonal performance that can impress some audio and music professionals. Even some of the most experienced audiophiles can appreciate this kind of tuning as they believe that this kind of neutrality is the closest thing for a faithful sound reproduction of all tracks.





The brand SoftEars is quite a familiar name for portable audio connoisseurs as they produce some of the best All-BAs, Hybrids and even single DD IEM sets in the market. They are also known to be a sister company of Moondrop but it caters primarily on the premium flagship segment. I've tested some of their products like RS10, Cerberus, Turii Ti and the Twilight, which became my top recommendation on a TOTL flagship single dynamic driver IEM. And this is actually my first full review product from them and I hope that you will enjoy reading my subjective composition about this product.




This is SoftEars STUDIO 4 and it has an all-balanced armature drivers set-up. This is probably the most affordable set coming from SoftEars as they are priced around US$400/£300. It has four (4) balanced armatures which are sourced (possibly from premium audio solutions like Knowles and Sonion) and customised specifically for SoftEars' quality standard. All these drivers are connected in a passive three-way crossover design with its own acoustic tube for a consistent sonic performance to all types of sources with undeviating resistance curve.





The drivers and other internal components encapsulated in a 3D-printed imported medical-grade resin shell which is a skin-friendly material and also offers a consistent comfortable fitting due to its optimisation of its contours and design moulds based on the datas that SoftEars gathered from the users of their RS series. The shape of STUDIO 4 has a UIEM-type of shell to give a semi-custom fitting and it has a rather plain design particularly on its faceplate as it has silver engraving prints at the lower part side of both channels, The printed "STUDIO 4" at left part and the SoftEars logo at the right part. It also has an unvented shell design like most CIEM and some IEM that I have tested since its all-BA that an implementation of a vent hole is rather an optional one. It uses a 0.78mm, 2-pin connector as its interchangeable mechanism due to its verifiable connection stability and a proven and tested structure for interlocking mechanism.





As aforementioned for its fitting and comfort, STUDIO 4 gives an excellent wearability just like I've tested the RS10 and Cerberus as they have the best fitting that they have this tailor-made exact fit into my lugholes. I don't feel any discomfort and or even an ear fatigue for a long listening session.





SoftEars STUDIO 4 has a high quality braided black-coloured stock cable made of 4-core, oxygen-free copper wirings insulated in polyurethane-like material. It uses a 3.5mm single ended plug as its primary termination. It is quite interesting that SoftEars included a cable extension adapter with a 6.5mm adapter plug for interface consoles on studio and stage works.





The product packaging of SoftEars STUDIO 4 is rather rudimentary yet it has a decent amount of inclusions that you find inside the box.




.Here are the following contents included inside from the box:

● a pair of SoftEars STUDIO 4 IEMs.
● Black-coloured stock cable.
● Extension cable adapter.
● 6.5mm adapter plug.
● Cleaning tool
● Cleaning cloth
● Pelican-like IEM container case
● three (3) pairs of balanced-bored, dark grey-coloured ear tips in different standard sizes.
● Instruction manual.





With a sensitivity of 123dB and a low impedance rating, this set is easy to amplify as it scales well on most sources even with a decent power output like smartphones. Even at medium amplitude scale level, it will deliver a full frequency range sound with a solid dynamics.





As for tonality, since this is a reference-studio set that will be used as a tool and aid for professional use. The SoftEars STUDIO 4 has this neutrality that is almost unsullied and nearly uncoloured tonality that is well-balanced, good presence to all parts of the frequency range and tonally accurate.



(This graph was provided by @koyawmohabal , credits to him)


LOWS/BASS:

The essence of the low frequencies on STUDIO 4 has a sufficient accentuate response just to deliver a precise, punchy and sufficient slam while it retains a well-balanced distribution on both sub-bass and mid-bass to have clean and a good segregation of each part of the bass region. So don't expect too much that it has more depth and zestful response like from a dynamic driver.

For a woofer balanced armature driver, it exhibits a good amount of reverberations as I was able to feel those rumbling sounds coming from sub bass-focus instruments like synthesisers, low toned bass guitars, octabass and drum machines. Mid-bass has an ample texture to give a note presence on some bass rhythm sections like bass guitars and bass kick drums on modern music, the cellos, double bass, tubas and bass clarinets on the classical/orchestral set-up and last is bass-baritone vocals. Both bass guitars and double bass have very similar sound quality as they have this ample weight, resonant and sustaining characteristics, bass kick drums have this rumbling and sonorous sound on them, bass clarinets have a dark to sonorous sound depending on low note register while tubas have robust and rounded sound. Then on bass-baritones, it has a sufficient depth and detail to give a gravelly and orotund vocal qualities on singers like Andrew Eldritch, Barry White and Peter Steele.



MIDRANGE:

For a neutral tuning set, it has an ample texture with excellent transparency and well-delineated that both vocals and instruments are well-presented and practically have a correct and accurate timbre. Both male and female vocals have its own natural characteristics that STUDIO 4 was able to portray.

On female vocal types, Contraltos like Tracy Chapman and Annie Lennox have a dark, rich and husky tone from their low chesty modulation. Mezzo-sopranos have a velvety to musky characteristic as I listen to Stevie Nicks, Andrea Corr and Madonna that it captivates and enthrals me with their sweet and provocative vocals. Even on sopranos from dramatic to coloratura, STUDIO 4 effortless to render their tone qualities of their vocals as they sound energetic, crisp and voluminous as they have a silky to gleaming voices as I hear it from the singers like Alison Krauss, Mariah Carey and Diana Damrau (try her rendition of Mozart's Die Zauberflöte as you will clearly feel her expressiveness, vocal control and her belting to reach highest note). Regarding male vocals, all male vocals types sound so natural and well-modulated that you will be able to hear that this set is a tool for tonal accuracy. Baritones have these velvety, warm and lush vocals as I able to feel the strength and robustness from the voices of Eddie Vedder and Lenny Kravitz. Sopranos have those bright to brassy qualities as listen to "Three Tenors"(Pavarotti, Domingo and Carreras) on classical and Robert Plant, Justin Bieber and Paul McCartney on modern music. Then on countertenors, they have this agility and versatility as they sound intense and vibrant that gives me that euphoric-feel. Andreas Scholl, Robert Gift and King Diamond are examples of countertenor vocalists.

As for instruments, no doubt that again they sound natural, vivid and detailed as I analyse every type of instrument on either percussive or rhythmic. On brass instruments, trumpets sound substantial, magnificent and bright, while trombones have a powerful and eruptive sound from them and then, horns have resound and intensity has little presence of shrillness when hitting the upper register. Meanwhile on woodwind instruments, flutes have a graceful, silvery and airy sound, then on clarinet they have a rather a melodic, lustrous and bright characteristics on how they will correspond well with instruments and bassoons have warm rounded eand sonorous sound on them. I even almost forgot to mention saxophones that they have a substantial, lively and reedy tone. Strings like guitars have crisp, scintillating and linger sound as clearly hear those plucks on the strings while violins sounds vibrant, full and sensuous. When it comes to percussives, Snares drums have hard, bright and shrilll sounds from, and then on tom drums have a bright and resonant sound. Timpanis have deep, velvety and resonant sound of them while field drums have full, hard and venerable sound from them especially I listen to them orchestra, marching band or simply drum lines like the fame Swiss drum ensemble, Top Secret Drum Corps. Chordophones like pianos and celestas are quite versatile as they can sound depends on notation or tuning, the former can sound warm, lustrous and vibrant while latter instrument seems to have soft, lustrous and ethereal depends on amplitude scale based on the touch response on keys.



HIGHS/TREBLE:

The treble has mild elevation on upper mids part just to give a sense of clarity, detail and energy on some female vocals and some instruments both rhythmic and percussive. Overall it retains a balanced, well-polished and satiny response that it devoids from sibilance and stridency which might be a problematic to treble-sensitive listeners out there although the treble air is rather a modest one when it comes to range and extension but as tool for studio mix and stage monitoring use, it will be sufficient enough as it has enough sparkle with decent harmonics.

Cymbals have ample shimmer, lustrous and sizzling that gives that evocative feel with same life-like tonality of a hi hats to have that particular shortened buzz sound.



SOUNDSTAGE, IMAGING AND OTHER TECHNICALITIES:

As we all aware that professional sets should have an accurate frequency response and excellent stereo imaging and STUDIO 4 able to deliver those aspects.

Don't expect cavernous and cathedral-like sound/speaker staging as professional sets don't really need those, instead it is on a balanced side, not too wide or very narrow to perceived, just able to track and monitor some frequency responses for audio effects, compression of dynamic range and mixing. The STUDIO 4 has an above-average width dimensions but it has good height reach and excellent depth from front to rear.

It has a 3D-like imaging presentation in which I was able to locate the placements of instruments and vocals in a very precise and accurate manner. It has a spacing and gaps of each element; they have their own tonal layer that is well-defined and delineated as they arrange in an organised way in a sonic canvas. Playing some multi-instrumental tracks on this set will be effortless and well-executed.

It has an excellent resolution on macro-dynamics and micro-details have good contrast with each other. A solid and homogenous character of macro-dynamics and impressive extracting of some nuances, subtleties and details from a track. The drivers have a remarkable cohesive performance that delivers fast transients without any hint of distortion or out of phase issues.

On a side of tonality, this is probably one of the most natural, well-rendered and tonally precise that I have experienced as it redefines my standard in regards to what an all-BA set should sound like.



PEER COMPARISON:


DUNU SA6

■ Like STUDIO 4, it has an all balanced armature drivers but it has more on quantity as it has an added 2 more drivers. It is also made of high quality, medical-grade imported resin but it has a more appealing face plate design. DUNU also implemented a toggle switch for atmospheric effect by adding and decreasing bass output. The stock cable of this one is a modular one for versatility on output sources.

■ Both of them are somewhat similar when it comes to the tonal sound profile as they are both neutral sounding. Although SA6 has a bit more texture compared to STUDIO 4 especially if you activate the atmospheric mode to add more weight on the low frequencies. On transparency, STUDIO 4 has an edge over SA6. And the treble response on SA6 is a tad smoother and has a similar treble air with STUDIO 4 but it has a tad less sparkle.

■ On the technical aspect, they have similar performance and projection. From parallel sound field dimensions and imaging projection with both excellent separation and layering capabilities. Resolution capabilities, SA6 has more rounded macro-dynamics.


DUNU SA6 MK.II

■ Like her predecessor, it takes the same aspect that SA6 has, from implementation of drivers, quality of its shell chassis and added some new accessories like newer type of ear tips. It still has a modular cable but it has more thicker and more solid one.

■ As for tonality, compared to the STUDIO 4, it has an added emphasis on other parts of frequencies particularly on high mids to brilliance part of the treble region to have a slight colouration. it has a slight boost on upper mids to presence treble to give a tad energetic, more sparkle and better airy extension.

■ They have almost similar technical performance but there is a particular facet that STUDIO 4 and SA6 MK.II differentiates from one another, it's the sound/speaker stage size as the latter has wider lateral to give a more atmospheric-feel.


As I end this assessment, like all SoftEars products, STUDIO 4 leaves me with an impression on how they deliver on such a product that has an excellent sound quality for its price as this is their first product to have a price mark at around US$400/£315. For sure that this type of tuning will not be pleasing to the ears of some listeners who want a more coloured sound profile as they might perceive it as boring and bland on their liking.


SoftEars STUDIO 4 is definitely marketed for studio engineers and professional musicians to be used for stage monitoring, studio recording and mixing a track. With its accurate and high definition of audio playback that this set has, it has an almost flat frequency response and full frequency range spectrum for high fidelity that even audiophiles will also enjoy these qualities that are beneficial for their critical listening to enjoy a nearly faithful reproduction of track that was supposedly intended by audio engineers.


SoftEars STUDIO 4 is now available at both HIFIGO and SoftEars official online store, you can check it out both in the non-affiliated links below:


★★SOFTEARS STUDIO 4 - HIFIGO★★

★★SOFTEARS STUDIO 4 - OFFICIAL★★

SPECIFICATION:

MODEL: SOFTEARS STUDIO 4
IMPEDANCE: 12Ω
SENSITIVITY: 123dB
FREQUENCY RESPONSE: 5Hz – 40KHz
CABLE LENGTH: 1.25M
PIN TYPE: 2-PIN CONNECTOR
PLUG TYPE: 3.5MM
DRIVER UNIT(S): 4 BALANCED ARMATURE DRIVERS


Some Tracks Tested: ( * = 16-bit FLAC, ** = 24-bit FLAC, *'* = MQA, '*' = DSD, *'= .WAV)

Alison Krauss -When You Say Nothing At All *
Jade Wiedlin - Blue Kiss**
Led Zeppelin - When The Levee Breaks **
Mountain - Mississippi Queen *
Queen - Killer Queen **
Guns N' Roses - Patience *'*
Eric Clapton - Tears in Heaven '*'
Sergio Mendes- Never Gonna Let You Go '*'
Pearl Jam - Daughter **
Roselia - Hidamari Rhodonite *
Assassin - Fight (To Stop The Tyranny)*
Celtic Frost- Visual Aggression *
New Order - Blue Monday *
The Corrs- What Can I do (unplugged version) *
Jimi Hendrix Experience - Voodoo Child *
The Madness- Buggy Trousers *
Metallica - Motorbreath **
Mariah Carey- Always Be My Baby *
Destiny's Child - Say My Name *
Malice Mizer- Au Revoir *
Mozart - Lacrimosa *
New York Philharmonic Orchestra - Dvorak- Symphony 9 " From the New World." *
Eva Cassidy - Fields of Gold (Sting cover)*
Michael Jackson - Give In To Me *
Exciter - Violence and Force *
Diana Krall - Stop This World **
Debbie Gibson - Foolish Beat *'*
The Sisters of Mercy – Lucretia My Reflection**
Suzanne Vega – Luka **
Lauren Christy – Steep *
Ottoman Mehter - Hucum Marsi *
Diana Damrau - Mozart: Die Zauberflöte*
Type O Negative - Black No.1 *
Felix Ayo - Vivaldi: Presto **


P.S.

I am not affiliated to HIFIGO or SOFTEARS nor receive monetary incentives and financial gains as they provide me a review unit for an exchange of factual and sincere feedback from yours truly.

Once again, I would like to send my gratitude to Mr. Neil Nino Clark a.k.a @koyawmohabal for lending his review unit to me. I truly appreciate his generosity and trust towards me and other reviewers.

https://senfireviews.blogspot.com/2023/06/softears-studio-4-pure-sonic-experience.html

SOFTEARS STUDIO 4 - A PURE SONIC EXPERIENCE​

HifiGo just gave us the opportunity to send in another solid in-ear monitor. I am no musician, or expert in the music field but the Softear Studio 4 is one heck of an in-ear monitor. It is a quad-balanced armature IEM which is advertised to be designed for monitoring, musicians, and other activities that might benefit from its flat sound signature.

DISCLAIMER:​

• I have no affiliation with Softears and have not received any monetary compensation during or after writing this review. HifiGo provided this unit to me in exchange for an honest and unbiased review.
• As a non-professional reviewer, I aim to use simple terms that can be understood by both beginners and experts in the hobby.
• Please keep in mind that the opinions expressed in this review are subjective and based on my personal experience with the unit. I encourage you to try the product yourself to form your own opinion.

PACKAGING​

The packaging of the Softears Studio 4 is nothing interesting and the inclusions are barebones. While the sound quality might be impressive, I find it hard to justify the high price of this package. However, it does manage to cover the essentials without lacking or providing something grandeur.



What's inside the box:

• Softears Studio 4 in-ear monitor
• 3 pair of eartips
• 1 extension cable
• 1 3.5mm female to 6.5mm male
• 1 cable
• Cleaning brush
• Case
• Some paperworks

BUILD QUALITY​

The Studio 4 features a sleek and minimalist shell crafted from high-quality resin, giving it an elegant and polished look. There is nothing more for me to say, Softears just wanted to keep things simple and let the sound speak for itself.

​

​

SOUND
The sound of the Studio 4 might not appeal to the masses since it has its own niche market, primarily to cater the likes of musicians, sound engineers, singers, and etc. The Studio 4 has a clean neutral sound signature and I personally have a preference for warm sounding earphones; I pretty much enjoyed Studio 4's clean nd accurate performance.

BASS
The Studio 4 has excellent bass control, delivering a punchy and fast-attacking response when you need it. However, it's worth taking note that this is not an IEM known for its overwhelming bass and may sound lean to some listeners who prefer a meatier bass.

MIDS
The midrange has a pleasing, natural texture. It maintains an almost flat position in the sound spectrum, without feeling too forward nor recessed. The vocals come across as natural and clean, while instruments like acoustic guitars sound accurate, close to realism, good attack, and possess a subtle warmth in their texture. The upper mids never produced any unnecessary peaks or exhibit any harshness.

TREBLE
The treble is exceptionally smooth, safe, and non-fatiguing. Treble-heads may find the extension to be somewhat lacking in energy and air. Nonetheless, it manages to maintain clarity and impressive detail retrieval, even though it sacrifices some of the energy, airiness, and sparkle typically associated with more a pronounced treble.

TECHNICALITIES:
Soundstage: The soundstage has good focus on width and depth which did not sound poorly resolving and messy. It is wide enough to provide ample space for vocals and instruments without struggling on complex tracks that I tried with it.

Imaging: Vocals and instruments are easily distinguishable. Presentation and placement is very accurate which is very helpful in tracking down different elements on one track. This level of precision greatly assists experts, such as music engineers, in dissecting the different sounds present in an audio recording.

CONCLUSION​

Pros:

• Neutral sound signature
• Punchy bass
• Minimalistic design
• Outstanding technicalities

Cons:

• Barebone inclusions, eartips feel cheap specially for this price point
• May sound dry or lean to those who prefer a fun, meatier, sound profile

While I know to myself that I may not qualify to thoroughly evaluate these in-ear monitors for sound engineering and intricate audio tasks, I can certainly provide my insights as a reviewer. In my assessment, these in-ear monitors exhibit commendable neutrality. Although they may not achieve the same level of pristine and diffuse neutrality as the Etymotic brand, especially to the likes of . Overall, these in-ear monitors stand out as an impressive benchmark for discerning listeners who prioritize neutral sound and critical listening.

INTRODUCTION:​

Softears is an audio company that primarily caters to musicians, singers, and sound engineers. However, their products have also garnered popularity among audiophiles. Despite being a relatively new company, having started in 2014, Softears has made significant strides in the industry. They established their studio in Shenzhen's Silicon Valley in 2017, and in 2019, they opened their independent research and development lab and factory in Chengdu.

Softears places a strong emphasis on technology, high-quality research and development, and innovation. Their primary objective is to provide an experience of softness, comfort, balance, and durability for their users when it comes to listening to music.



Hey, guess what I got here? The Studio 4! And let me tell you, I'm pretty smitten with these earphones. Admittedly, I wasn't blown away on my first listen. In fact, I found them quite dull and lifeless at first. However, as I spent more time with them, I realized their true purpose and versatility. So, I'm going to give you two different perspectives on them - one from a musician's point of view, and one from a sort of audiophile perspective. Let's dive in!

Oh before we start, you might want to check this link for more info on Studio 4.
Softears Studio 4 official link

FOREWORD:​

• The gear on hand has undergone at least 20 hours of use before it was assessed.
• No EQ is ever applied in my reviews.
• For the sake of convenience, I try my best to use a stock setup. Not everyone has access to personal ear tips or cables. If personal ear tips, cables, or accessories are used, you will be notified.
• As I try to be objective, my claims inevitably will be subjective and biased to my personal preference. I cannot stress more that you should take this with a grain of salt for we have different perceptions to sound and what we hear.

SPECIFICATIONS:​

Configuration: 4 x Balanced armature
Impedance: 12ohms
Sensitivity: 123db
Freq response: 20hz - 20khz
Connector: 0.78mm 2 pin
Plug: 3.5mm

PACKAGING:​

Initially, it can be observed that the Studio 4's packaging is simple and straightforward, which is well-suited for musicians. It is presented in a small white box with no flashy designs or unnecessary frills. Those who enjoy the novelty of unboxing might find the Studio 4's presentation to be underwhelming.

In the Box:​

• Pair of Studio 4 IEM (with their own mini bags for protection)
• 1 sturdy waterproof pelican case
• 1 cable
• 1 extension cable (musicians need this)
• 1 3.5mm female to 6.5mm male (another for musician’s needs)
• 3 pairs of ear tips in SML
• 1 cleaning tool
• 1 cleaning cloth
• 1 wrist band

The inclusions provided with the Studio 4 are tailored specifically for musicians. They are of exceptional quality and do not feel flimsy or poorly made. In fact, they can compete with other top brands such as Shure, Audio Technica, and ADV. While the number of inclusions may not be abundant, everything necessary is included to get the job done.

SOUND IMPRESSIONS:​

For the entirety of this review, the Ovidius B1 was primarily used as it offered the most blissful pairing. The Abigail pro 3.5 comes next, and then Hiby RS2. Stock cable and ear tips were used to avoid aftermarket sound impact. Music tracks are my own FLAC files and Qobuz Studio subscription.

Okay let’s get down with it. As usual, technicalities first.

The sound stage of Studio 4 is not exceptionally wide, but it is not overly intrusive. As a musician myself, I find that a broad sound stage is not necessarily advantageous. As a member of a cover band, our aim is to perform tracks as close to the original recording as possible. As the primary keyboardist/pianist, it is my responsibility to perceive and interpret various musical elements such as string sections, brass, woodwinds, synths, and bass (since we have no bass player). The sound stage of Studio 4 is tailored to meet the needs of musicians like me, with its intimate and narrow stage that makes it easier to comprehend the intricacies of the music. The stage isn't a concert hall, but rather a small jazz club that places you in close proximity to the musicians. You will be seated in the front row of the stage, according to how the stage is arranged.

The timbre of the set is accurate, with no artificial or unnatural sound. The tuning is organic, musical, and highly satisfying, resembling the sound of real-life instruments. It is a pure balanced armature (BA) set that I have tried and did not have any issues with BA timbre or any fake thinness.

The speed and performance of the drivers in the Studio 4 are of top-notch quality. The drivers exhibit a realistic attack and decay, resulting in a highly satisfying sound quality. Even complex and densely layered tracks are executed with ease, without any sluggishness or slow-downs. This is a testament to the exceptional performance and efficiency of the Studio 4's drivers.

Now we come to the crowning glory of Studio 4's technical capabilities: its separation and layering. The audio output is crystal-clear and transparent, with every element presented in impressive detail and clarity. Instruments and vocals are distinct and don't blend together into a muddy mess. This trait is particularly useful for sound engineers and artists who need to dissect, analyze, and work on audio in a studio setting.

Finally, the imaging and placement of instruments are precise and effortless to track. The constantly shifting positioning of elements is clearly distinguishable and offers a 2D experience that emphasizes width rather than depth.

BASS:​

According to the graph, there is a noticeable bump in the sub-bass region. This results in a satisfying rumble in those frequencies, but it doesn't linger, giving us a clean and precise sound. As a result, I was able to experience a full-bodied acoustic bass when listening to my favorite jazz tracks. Electronic tracks, such as those from Daft Punk, Shawn Mendes, and The Weekend, exhibit good punchiness. Mid-bass sounds are well-balanced and have a good presence, while bass from artists like Stevie Wonder, Bobby Caldwell, Marvin Gaye, and Queen possesses impressive texture and thump. Overall, the quantity of bass might not be enough for bass enthusiasts, but it is just right for mature and discerning listeners who prefer clean and precise sound. Studio 4’s bass leans to be almost flat neutral that prioritizes quality than quantity.

MIDRANGE:​

In terms of the midrange, there isn't much of a dip, and it remains true to the graph. However, moving away from the graph, I can confidently say that the midrange has good weight and a warm tone. The vocals, both male and female, are engaging, but there is a noticeable preference for female voices. The upper mids are not hot or fatiguing to listen to. As a musician, I find that my favorite instruments, such as pianos, saxophones, organs, Rhodes, and orchestral instruments, sound lush and rich with just the right amount of presence. The midrange is not pushed back, but rather slightly forward, making it appealing to mid-centric listeners like me. Moreover, from a musician's perspective, relevant instruments that are crucial for my band's weekly repertoire are easily discernible, making my life easier.

TREBLE:​

The treble of Studio 4 inherits the genes of the midrange, exhibiting a smooth sound reproduction that does not cause fatigue or piercing. This type of tuning often results in the compromise of details and nuances, but that is not the case with Studio 4. However, some listeners may find the extension to be lacking, especially those who are treble enthusiasts. The upside to this smoothness is that people with sensitive ears will appreciate Studio 4's unoffensive treble. Personally, I sometimes find myself wanting more on tracks that are not brightly mixed and mastered. Cymbals and hihats can be dull and lack energy. When using Studio 4 for stage performances, we enter a different world. Instead of listening to final mastered tracks, we focus on how the tech person behind the mixing console balances and mixes the sound. Aggressiveness may sometimes come with the territory, for instance, a guitarist's preference for a bright guitar may lead to fatigue. Studio 4 had this in mind, and as a result, they tuned Studio 4 in a smooth and balanced manner to avoid such cases. Nonetheless, the detail retrieval is impressive, although the priority is not on shimmer and sparkle.

COMPARISONS:​

versus Hidizs MS5​

I had just reviewed the MS5 and seeing they are at the same price point, comparing these two will somehow be fair.

The MS5 has a brighter sound signature that can result in ear fatigue after prolonged usage due to some sibilance. Unlike the Studio 4, the MS5 has a more colored sound with a more prominent bass, richer midrange with added weight, and treble with grit and bite. Additionally, the MS5 has a special feature of sounding holographic compared to the simpler and more plain sound of the Studio 4. However, for musicians who prioritize critical listening and analysis, a simple and clean sound is preferred. In terms of technical aspects, both IEMs are on par with each other. The MS5 occasionally exhibits BA timbre, while the Studio 4 has a more natural and safe sound due to its smooth treble presentation. Individuals who are sensitive to treble should consider the Studio 4, while those who enjoy bright treble would appreciate the MS5's sound.

versus Kinera Idun Golden​

While Idun is a third of Studio 4’s asking price, I can’t help myself but compare these two as they are both exceptional and commendable for stage monitoring.

Both IEMs offer a nearly flat, neutral sound reproduction, with Idun being the brighter and colder one, while Studio 4 has a pleasing warmth in comparison. Idun boasts impressive treble extension, and hihats and cymbals offer great texture with excellent clarity and presence in vocals. The soundstage is slightly wider with Idun, but Studio 4 provides clearer sound analysis and better technicalities, albeit by a small margin. If you want to experience an effective stage monitoring setup, Idun is a great starting point with its lower price point. However, if you wish to invest more and upgrade, Studio 4 will undoubtedly deliver better and exceptional performance.

FIT & ISOLATION:​

Studio 4 is an incredibly lightweight IEM that is designed for comfort during prolonged use. The use of resin in its construction imparts sturdiness that enables it to withstand occasional drops, though additional care is always recommended. The ergonomic design is intended to cater to live performances and provides a reasonable level of noise isolation. I had the opportunity to test them on stage and despite my band playing at a loud volume, the Studio 4 effectively blocked out most of the ambient noise. Achieving a secure fit was easy, and the nozzle's angle was pleasantly comfortable, making it one of the most comfortable IEMs I have ever worn. Performers need not worry about the IEMs falling off or affecting their movements during performances, allowing them to focus solely on their craft.

SOURCES USED:​

• Ovidius B1
• Abigail pro 3.5mm
• Hiby RS2
• Qobuz Studio subscription
• Offline FLACs
• Oppo A94
• Hiby music app
• UAPP

TEST TRACKS:​

Here are some tracks I usually listen to when reviewing:

That’s the way of the World by EWF
Africa by TOTO
The Girl in the Other Room by Diana Kral
Balmorhea album All is wild, All is Silent
Sila by Sud
Smooth Escape by D’Sound
Never too Much by Luther Vandross
P.Y.T by Michael Jackson
Ain’t no Sunshine by Eva Cassidy
Shoot to Thrill by AC/DC
Another one bites the Dust by Queen
Good times bad times by Edie Brickell
Alice in Wonderland by Bill Evans
Ain’t it Fun by Paramore
Redefine by Incubus
Far Away by Nickelback
Lovesong by Adele
Lingus by Snarky Puppy
Harvest for the World by Vanessa Williams
Love Bites by Def Leppard
No Such Thing by John Mayer
As by Stevie Wonder
Whip Appeal by Babyface
Ain’t Nobody by Chaka Khan
Futures by Prep
Landslide by Fleetwood Mac
Every Summertime by NIKI
SADE tracks
AC/DC tracks
Queen tracks


And many more… I always listen to High resolution format, being the least quality 16bit/44khz FLACS be it offline or online.

VERDICT:​

After spending a considerable amount of time with Studio 4, I can confidently say that this IEM is not limited to musicians, artists, and sound engineers but also to audiophiles who value intricate details and do not mind a near-flat sound profile. Though it can sometimes sound dry and unexciting, especially for those accustomed to much-coloured sound, the precision, clarity, cleanliness, and transparency of Studio 4 can certainly impress discerning and critical listeners.

Despite the steep price point, Studio 4's performance, build quality, and barebones inclusions are justifiable for a gigging musician, touring artist, or producer. For anyone considering this investment, I can attest that it is worth every penny.

It's important to note that Studio 4's sound profile may not be everyone's cup of tea, and auditioning is highly recommended before making a purchase. Those who prefer a warm, natural timbre, speedy drivers, clean sound reproduction, and intricate details will find Studio 4 a delight. It's a great tool for music analysis and deconstructing parts for cover bands and artists. Even audiophiles who enjoys engagement and connection to their music will appreciate the sound of Studio 4.

I would like to thank Neil Nino Clark for facilitating this tour and to HiFiGo for being generous to me and my co-reviewers.

Softears Studio 4 - "RAW"


DISCLAIMER
This set is a tour unit provided by Hifigo. I do not get an incentive for reviewing this. I merely write my takes and opinions regarding this set using my own personal time. Please take my impressions with a grain of salt.

I will try my best to allign myself as a user, rather than a reviewer. So it is a like a personal diary of how I experience the Studio 4, which is more geared towards subjectivity. Please Cross reference other reviews, because you might not like my style of writing.

Lets start

You can watch my video here for the unboxing,what's in the box and design



Bur for the sake of writing, I'll include a simple write up for that part.

WHAT’S IN THE BOX?


1.) Extra cable adapter. Well yeah, working in studio needs longer cable.

2.) 1 set of eartips in SML. They look similar to BQEYZ eartips

3.) Pelican case. For added protection when carrying around

4.) Cleaning tool

5.) Nicely braided cables. I like these a lot. The texture is good and easy to handle

6.) The IEMS

BUILD and COMFORT


Build is standard. Nothing much to say other than it is made of resin. I wish they were made of metal tho.

As for the design. I dig the all black a lot. Very simple yet classy.

Comfort wise, they're good. Though not as great as the letshuoer Cadenza 12, it does its job pretty well with seal and comfort. I didn't notice any strain even for long hours of listening.

SETUP:
-Shanling M3X using UAPP, Hiby ang stock player

-stock cable

-stock tips and aet07 SM size.

-Volume measured and listened at 75-78 dbs.

MY LIBRARY:
I grew up listening to 90’s music. Alternative, punk-rock, screamo, rap, Philippine OPM, Anime songs, JPOP, KPOP, metal, reggae and a lot more.
The artists I regularly listen to are:

Rock-Alternative-Metal
Incubus, 311, BMTH, Matchbox 20, The Goo Goo Dolls, Paramore, Polyphia, The Calling,, Babymetal, Metallica, Slipknot, Bon Jovi, Coheed and Cambria, Deftones, Red Hot, Green day,

OPM(Original Pinoy Music):
E-heads, Slapshock, Parokya, Urbanddub, Up Dharma Down, Bamboo, IV of spade, Kamikazee, Rivermaya

POP:
IU, Yoasobi, Yorushika, Milet, Reona, Maroon 5, Coldplay, Bruno Mars, Ed Sheeran, Taylor, Dua Lipa, Oliva Rodrigo, Billie Eilish

OTHERS:
Carpenters, Micheal Learns to Rock, Celine Dion, Bob Marley, Sitti, Daft Punk, Pink Floyed, Earth wind and fire, Amber rubarth, Sia, Yosi Horikawa

I listen to more, but I can’t just list them all here.haha. Just giving you an idea on what I listen.

SOUND



"I want to be somewhere quiet"

Spending time with the S4 makes me want to be alone with myself. Just be there immersed in music. Vocals come out really nice from them. Almost at the edge of being real. The tonality helps a lot with how they sound. It is neutral with excellent extension in both ends.

They are neither lacking nor colored for my preference. It hits my G-spot bass, staying me at the edge, while the treble is being kept safe. I cant get enough of them that I would want to wake up early and experience its sound - somewhere quiet.

"Resting b*tch face"

My face of contentment. It was hard for me to hate it. I felt everything is just enough. The bass is very tight

I was vaping 500 meters from work. Drinking my favorite energy drink before the start of a busy night. I hated the fact that I have to remove them because I have to wear my helmet. And so I rode my bike and tied my helmet on my elbows-hell yeah!

Enjoying my music with the blowing wind, and with a resting b*tch face.

"I then cry"

I was listening to Yoasobi's "gunjo"- the first take version. I just like the "originality" of that video and song.

The S4 did not dissapoint. I had goosebumps listening to everyone including the "plusonica" choir. I hear everything. I hear the male vocals, I hear Ayase when whe does back vocals. Crazy. Vocals have very good presence and smoothness. Very natural and organic.

I felt that I was in there, with them - teary eyed

"Headbang"

And so I noticed the new almbum of babymetal has been released. I can't just let it go away without listening to the album using the studio 4. I have one big worry though, and that is the midbass tuck on the Studio 4.

But fck it. I would be lying if I did not like this presenation. The bass is freakin tight and fast. It does not feel like BAs. The midbass is ever present with full force, hitting my face especially on the track "Maya".

The macro dynamics is amazing on this set when listening to "Mirror mirror". That periphery-like riff in the beginning hits so hard.

No midbass on bass tuck? Hell no, I was headbanging listening to the whole album.

"Surround"

Why you gotta be so rude? The bass drums in that track has good attack and timbre. The air that the bass drum produces sounds real and tight. Insruments are well spaced and cymbals have very good decay and realism. The back vocals are clear that you can't miss every word they utter.

In the track "Drive" by Incubus, the stage depth is just studio-like. This is one of my all-time favorite tracks and I listen to it almost everyday for the past 15+ years. I have never heard it like this. The bells are so clear. The studio 4 really excels in giving you that natural timbre on instruments, particularly different cymbals and their decay. The technicalities of the studio is just pushes above its price range, giving you that surround sound.



❤PROS

smooth neutral tuning that is inoffensive.

very open mids and very transparent vocals

instrument timbre is spot on

enough bass for me even with a tuck. Midbass has enough texture to be discerned.

no harshness or sibilance. Smooth treble response

very good staging. This must be the deepest and widest I have tried on an IEM.

because of its staging, instruments separation and layering is easily outstanding. I have less effort tracking instruments.

very large stage and almost hall- like. This is very obvious in the track "Every women in the world"

In the track "piano in the dark" live by Niña, the bass lines and bass drums have very good texture, rumble and hit.. I hear how the air moves on bass drum.

I didnt know that there is a vocal reverb in the track "better days" by Franco. It was easily discernable

CONS

might not be suited for people who like contrasty signatures like U shaped or V shaped.

some people may want more air. But that would break its signature to be honest.

doesnt have an EST for its price. I mean I am just nitpicking. I just thought that ESTs would add more texture and realism to instrument timbre and vocals. There are other sets with ESTs on its price range, but ofcourse it doesnt mean they are better.

SCORING
-Please be reminded that my scoring is always based on its price range.

TUNING - 3
BASS - 3
MIDS - 3
TREBLE - 3
TECHS - 2.5

=14.5 ( S rank,exceptional. Consider saving if you want a reference set with TOTL qualities)

Check my scoring criteria here:

https://docs.google.com/spreadsheets/d/15WhgCgiMzWfF3ccgB8SK5-Cg7m87kpIShtxsyg2u-AI/edit?usp=sharing

COMPARISONS:

Theiaudio oracle
-I like this set because of its tuning. The female vocals on this set is just amazing. The studio 4 on the other hand comes off less aggressive in its presentation. S4 is more natural sounding for me and much better spacing between instruments and vocals. I just like the S4 more.

Dunu sa6/ultra
-I love this set very much as well because of its tonality. However, the S4 is just a better set in terms of smoothness and balance. The SA6 mids is much clearer tho, and the treble is more nuanced. But I came to appreciate the balance of S4. The more I listened to them, the more I question my preferences haha.

EJ07M kinda lava
-just a grain of salt. There have been issues with this release because some have a lower bass shelf compared to others. The one I tried was from Timmy's which graphed with a lower bass.
The tonality is suprisingly close from memory. EJ07M also sound cleaner and more engaging especially in its treble extension. The S4 again is the smoother one. I feel that there are no pronounced emphasis on the S4. The staging is just better on the S4 as well. That 3D stage is just difficult to beat in this price range.

Monarch mk1
-they are both neutral but with a bit of difference in emphasis. The mk1 is brighter in tonality because of its earlier tuck and pronounced treble. The S4 has an atenuation around 6k so cymbals sound less aggressive and forward. If you like brighter sets with clear mids, you might like the mk1. But if you want less coloration, the S4 is the one to pick.

Planars
- I have never heard of newer planars especially the Heyday. But I have the S12 pro, Dioko and KZ pr1. I have also heard other planars like the Dunu Talos, raptgo, Zetian wu etc.

Planars might offer more fun and engagement because of its qualities. Treble is more forward in most planars, and although there are some elevation on the bass, they are resolved quite fast.

However, I found that the S4 sounds more natural compared to any other planars, with less engagement ofcourse. I do want give the natural staging on the S4, and treble air for planars. If you want more natural sounding pair and for reference maybe consider saving up for S4. If you are on a budget, and want more fun, maybe get planars first.

FINAL THOUGHTS


The studio 4 sounds very neutral for me. The speaker kind of neutral. The frequency is even except for that little dip around 6k. Bass is very tight with good presence to support lower mids. Vocals sound close and enough realism. Instruments sound almost true to life, just needs that final touches of texture. Treble is well extended and nuanced even with the attenuation.

The technicalities is really the star of the show for the S4. The stage is really studio like and I think this would also fit quite fine for studio use. The separation and layering is TOTL level because instruments and vocals have a more defined space compared to other sets in its price range.

Having said that, the terms "organic" and "natural" is an understatement. The S4 disappears on my ears after a few minutes of listening. They carry this realism in space that confuses your mind on which are ambient sounds.

Because of this, I'd like to call them "RAW"

Thanks for reading.

WHERE TO BUY:

Softears Studio4 non affiliate

HiFiGo Web：
https://hifigo.com/products/softears-studio-series-studio4?variant=43804083716335

Aliexpress：
https://www.aliexpress.com/item/1005005268260991.html

Amazon US Store:
https://www.amazon.com/dp/B0BX5WNW1C/softears+studio4/