DUNU Studio SA6 MK2

Review Of The Dunu SA6 MK2​

Introduction​

DUNU is a reputable firm that specializes in manufacturing cables and other electro-acoustic goods. Additionally, they offer their own line of eartips called Candy and S&S. The firm was commended for its technology and quality, and it was among the first to create modular cables with modular termination connectors. I have adored all of their IEMs, including the Vulcan, Kima series, Tales, SA6, and others, because of their excellent build quality, excellent sound quality, and superior aesthetics. I managed to obtain a pair of DUNU SA6 MKII for review purposes, despite the fact that it has been some time after their debut, but before, I would want to address a few points.

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 “SA6 MKII.”
*I am using different Ear-tips for convenience and better versatility.
*Finally, I will only evaluate the SA6 MKII based on their performance, even though I will explain how it feels and seems physically and aesthetically.

Specification​

Six balancing armature drivers make up the multi-driver arrangement of the SA6 MKII. Two Sonion woofers are used for low frequencies, Knowles twin midrange drivers are used for middle frequencies, and Knowles dual treble tweeters are used for high frequencies. Through a three-way frequency crossover, all of these drivers are connected and regulated. Unlike its predecessors, which had a more bespoke-looking shell from the nozzle side, this one is incredibly ergonomically designed. At the end of the day, they appear really different from other IEMs, so I would advise trying it before making any decisions. There were no problems or weariness felt when wearing or using it, even after listening for a long time. The faceplate is made of wood and has a layer of resin applied to maintain its original appearance. The DUNU Hulk mini cable, a premium two-pin cable with modular plug attachments at one end, is included with the IEMs. Additional accessories that come with the IEM include a carrying bag, modular plugs (3.5mm and 4.4mm), a cleaning brush, eartips in a variety of sizes, and a 3.5mm to 1/4inch connector. Regarding the technical details, the sensitivity is 114dB and the impedance is 24Ohms. The frequency response spans from 5 Hz to 40 kHz, with less than 0.5% of total harmonic distortion.

***Above Image Credits***

Sound​

The balanced tuning of the SA6 MKII favors the mid range, making the sound open and more expressive, while the treble's spacious and airy response balances it out. The SA6 MKII's response is quite subtle and soothing, yet it's not depressing or laid back in the slightest; rather, it elicits an enthusiastic response rather than a tranquil one. The response is more in line with what I would have imagined from my Monarch MKII when compared to the SA6 MKII with Monarch MKII; nonetheless, the bass and treble are not as deep and expansive.In my perspective, the SA6 MKII is exceptional because, even after being advanced in the upper frequencies, it still sounds remarkably natural and smooth. While none of its competitors can equal what DUNU has accomplished with the SA6 MKII, it can still compete with IEMs that have tribid or hybrid drivers installed. What makes the BA so good is its ability to balance secure and polish with clarity and details. Let's take a closer look at the sound.

Treble​

The response of the treble area is quite calming and revealing, allowing for a safe and comprehensive response to that doesn't come off as aggressive. I mean, this is the first time I have heard a smooth response in the upper frequencies while still generating amazing details—especially when it comes to an all-BA set. The vocals, which often sound open and forward, don't appear to come over as such in places where the upper treble, which has excellent air and wide response, seems a touch muted. Conversely, the tones of the instruments are lively but round; they don't sound harsh or metallic. The lower treble brings the notes forward and vibrant, all the while sounding forward and with a strong feeling of tonal correctness. The response highlights the light and energetic sound of the instruments and singers, while also exhibiting lean features that may deviate from a natural sound. However, the impact of these notes isn't heavy, which may disclose such response. As a result, the treble region's overall appearance is vast, light, and calming.

Mid Range​

In terms of the mid range, I was astounded by the contrast and intricacies that each note could offer; the delicately smooth yet crisp intensity created a soothing and invigorating sound. The primary cause of it was that neither the instruments nor the vocals were really thrust forward. The note sounds a little different in my opinion because of its occurrence and unusual presentation without depending too much on energy, which also suitably separates the vocalist's presence from the surrounding instruments in a large area. Similar energy was resonant in the upper mid range as in the lower treble, but the presentation is more enjoyable to listen to. However, while listening to livelier or even basic tunes, the voices occasionally tend to sound off-key. The instruments and vocals sound clear and beautifully detailed, especially the female vocals, which captivate and enliven you with their light and open response. The voices and the instruments seem upfront and dense, but not thick or heavy, which drowns out and leaves the sound wobbly and mumbly. The lower mid range plays a significant role in creating this lively yet peaceful response. The notes should have depth and thickness; some may claim that they do, but I think it sounds a little strange and odd. The clarity in this area also contributes to the sound's pleasing quality. However, once more, the notes are helped in by the dense response produced by the lower mid range. Compared to thin, the higher frequencies should sound more genuine. As a result, the mid range area is presented in a pleasant, revealing, and fascinating manner overall.

Bass​

Getting to the bass, I think it makes the entire response right. By which I mean that the bass responds very well, allowing for a more controlled yet effective response that influences the warmth into the lower mid range. Although many people may be aware, the BA bass has a certain quantity and quality to it. It used to sound more puffy than thump, but that is usually not the case these days. In contrast, the SA6 MKII exhibits a more punchy and rumbly bass instead of a thumping and booming sound because the bass is more prominent in the sub bass region. Although the quantity of the guitar slams isn't quite there, they do sound satisfying. However, I do agree that the bass has a nice, detailed, and controlled feel. Like previously indicated, the mid bass has a good heft and presence but doesn't sound particularly powerful or engaging—rather, it sounds warm. The emphasis is in the subbas region, which tends to sound deep and punchy. Ultimately, I think the bass is done really well; I'm not sure about the earlier models, but I do think this pair is unique compared to others on the market, particularly its competitors. Overall, the bass response is punchy, rumbly, and controlled in its presentation.

Technical Performance​

The technical skill of the DUNU SA6 MKII is another feature that makes me adore them even more. I think that every aspect of them, from the imaging to the layering to the details, is done to the highest standard. I find the SA6 MKII to sound more refined and immersive, even though its peers have a more expansive, open, and vast sounding response. However, even the stage is quite roomy; let's delve deeper into the specifics.

Soundstage, Sound Imaging & Separation​

The response is more holographic, the notes are firmly present and positioned to create a very nicely staged presentation that is nicely spread out, and because the stage is not greatly expanded, the presentation becomes more engaging. It was a surreal experience for me because of the crisp, clear imaging that enhances the overall clarity of the notes and the precise layering and separation that makes the notes stand out more.

Speed & Resolution​

The resolution of this all-BA IEM is the best I have heard of, but the details are not crisp or metallic—rather, they are smooth but not soft, with the micro details being particularly notable as well as the macro details are also certainly revealing. Although I find the notes' attack and decay to be a little off, their rapid pace effectively resolves the presentation and prevents it from sounding disorganized.

Sound Impressions ​

Bass Switch​

Although I didn't think there was much of a difference, it was effective where it mattered. The response did sound less thrilling and more balanced in the higher frequencies when I turned on the switch. Additionally, I discovered that the thinness that occasionally surfaced when I listened to upbeat music or, more especially, female vocals, was subdued and seemed more realistic to me. Although the bass felt strong and powerful as well, which contributed to the bass sounding more pounding and dynamic, I think the bass of the dynamic driver is far superior. I found the differences to be subtle, but for other listeners, they will have a greater effect.

Sources​

Sony WM1A - The response from this pair was exactly what I could have hoped for when listening to SA6 MKII with the WM1A. It sounds very wholesome and well-balanced because of the notes' roundness and fullness. Whether it's the vocals or the instruments, both maintain the same level of quality and quantity while adding a comforting warmth. Although the same can be said for the other sources I tried, I think this pairing has a more natural presentation and heavier notes. The treble sounds more expansive and removes the subdued effect, while the bass is also less controlled and causes a natural decay.

Tempotec V6 - I find that the more transparent and detail-revealing sound of the SA6 MKII when paired with the V6 sounds a little too expressive. The vocals frequently start to sound metallic because the response is more focused on the upper mid range and lower treble while the bass is more in control, making it sound a little sharper than before. However, I find that listening to tracks with a lot of bass has a very enjoyable and fun sound quality because of the impact and cleanliness of the bass as well as the sparkling high notes.



Kiwi Ears Allegro - When listening to SA6 MK2 with Allegro, the sound seemed more personal, which made it easier to understand the notes' sharpness and differentiate them. The response was all pushed forward, from bass to high, yet the coherence and balance in between seemed organic and seamless. However, I did notice that listening to busy or complicated tunes made it difficult to pick up on subtleties because of the forward and near response, but the bass also felt more prominent and forceful. Even yet, I continue to like its meticulous and sterile presentation.

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
Goyte - 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​

Ultimately, the DUNU SA6 MKII is a fantastic all-around BA IEM because of its subtle yet calming response, which captivates you whether you're listening to tracks with Vocal specific tracks or Bass heavy tracks. The SA6 MKII is a truly unique piece of art, and I had a great time listening it. For that reason, I heartily recommend it to anyone looking for a detailed and engaging sounding response.

***Dunu sa6mk2 has a price tag of $579. I bought this iem myself to write an independent review and have listened to it for over 200 hours.



Specs

Frequency Response: 5 Hz - 40 kHz
Impedance: 24 ohms @ 1 kHz
Sensitivity: 114 +- 1 dB @ 1 kHz
Total Harmonic Distortion: <0.5% @ 1 kHz
Cable : Hulk Pro Mini
Cable Length : 1.2m
Cable Connector : 2-Pin (0.78mm)
Plug Connector : Patented Q-Lock Plus Modular Plug System
Included Plug Terminations: 4.4 mm TRRS Balanced, 3.5 mm TRS Single-Ended



Foreword

Good resolution, good detail reproduction. The background is a bit lackluster for these great features. Let's get started.

Build

Dunu SA6mk2 comes with a really big box. Everything in the box is very high quality. Especially the case quality is awesome, the inside is covered with velvet. There are more tips, they have different shapes and characteristics. It also includes one brush and 6.3mm converter.



Shells

Dunu Sa6mk2 has the familiar "big shells" of the Sa series. Although they are big, the fit is not bad. The shape is good to fit the ear. The isolation is quite good. Appearance? The wood-like surface is different for each iem and is unique to that iem. It feels epic and looks good at the same time. They feel solid in hand.

Cable

Dunu Sa6mk2 comes stock with the Dunu Hulk Mini. The Dunu Hulk Mini sells for 200 dollars. That's a pretty good jest. The cable has a changeable jack. Comes with 4.4 and 3.5 (the 2.5 is going out of business) look and durability are very good. No microphonics. I must say that I found the sound transfer skill successful. Much better than the stock cable of many iem's I have. About the build quality, I can shortly say that you can pull a car.

Sound

First of all, let's see what this switch does. I can say that it slightly raises the lower frequencies and lower mids. Acoustically, there is a more fresh sound when the switch is off. When listening to hiphop or EDM, turning the switch on allows you to hear more sub. This hearable difference is not dramatic. But it's a nice touch.

6 balanced armatures do a great job in terms of resolution. In addition to this, the detail level is above its price. Soundstage is spatially successful. Depth is enough, wide could be better. In-stage localization fidelity is okay. The sound is realistic but the separation is a bit weak. To put it simply, this is a critical listening iem, not really suitable for everyday use.

Another nice thing about this iem is that it is ideal for listening to any kind of music. But I would say it's especially great for pop and rock. The bass guitar timbre is impressive. Dunu sa6mk2 shows its potential when paired with a better source. For this iem, an excessive increase in the source quality can give good results.

The sound signature is up for discussion. I can say that there is a mid-focused W shape. Vocals and violin are in the foreground, followed by guitar and wind instruments. In general, fretted instruments sound better than fretless ones. The preferred setting for the treble adds a chaotic atmosphere to the sound. It's not bad, but it undermines the great potential that exists. On the other hand, the condition of the low frequencies is quite positive and the lack of dynamic drive is not felt. There's not exactly a natural tone, but there's nothing disturbing either. There are some tonal touches, some right and some wrong.



Bass

Details, resolution, texture. It's really good. When the switch is turned on, the bass balance shifts from midbass to sub bass. That's very good. Overall the low frequencies are both instrumentally good and punchy. They are well tuned and do a good job with all kinds of music. The Dunu Sa6mk2 has a textured and complete sub bass response.

Mid

The first point I'll make is the wonderful lower mids, well separated from the bass. The lower guitar tones and the instruments in this zone sound lush and resolved. The separation is not bad, everything is separated but they are very close. Add to that the difference in volume and you get a great sense of depth, but the width is average. This is not a problem because you enjoy the overall instrument timbre and resolution. The female vocals could have been a bit behind. The upper guitar tones are also a bit too forward. Despite all this, all the detail and micro detail you hear is stunning. In addition to this, the depth perception I mentioned adds a mystical atmosphere and realism to the sound. There is a very good resolution throughout the mid frequencies. By the way, unlike other fretless instruments, the violin and cello have a wonderful timbre.

Treble

Good on the surface. High resolution, well placed and textured. But unbalanced in itself. 8Khz is high, and then what? The lower treble is uncontrolled and wobbly. Obviously the drop from 8Khz to 10Khz has negatively affected the sound, the cymbals are good but the air frequencies are not so good. But are the trebles bad in the whole presentation? No, it gives the expected resolution, detail reproduction. But they don't provide enough freshness, they don't give the necessary width in the soundstage. The extension is good for "8Khz" but not enough for the rest. I can't say "bad" because the cymbals I hear are really nice and well worth the price. But the potential is wasted with wrong tonality when it could have been much better, especially for the lower treble. I would have liked to hear more "ss" at 10Khz and beyond, and they must have thought of that because there is a hill at 14Khz. Is it enough to save the situation? That depends on the person, I'm not satisfied.



Last Words

Dunu Sa6 is a good iem. Despite a somewhat tiring presentation and poor separation, it has excellent detail reproduction and high resolution. It has some tonal flaws, but overall it's a reliable product that works well with any music. If you don't have very solid tonal expectations, you may prefer this headphone. It's not the first choice for everyday use, but it's perfect for critical listening. It's worth the price.

INTRODUCTION:​

Dunu is a brand that has captured my attention since the beginning of this year. Let me provide you with a brief introduction. Dunu strives to innovate for music lovers, aiming to be at the forefront of audio technology by creating premium, high-resolution audio products for discerning audio enthusiasts. With a rich history dating back to 1994, Dunu initially specialized in ODM/OEM services for prominent audio and telecommunication companies. However, in 2006, they took a leap forward and established their own brand.

Among their impressive lineup, the SA6 series is a model that has always been on my radar. Specifically, I will be focusing on the SA6 MK2 model for this review. It's worth mentioning that I haven't had prior experience with the OG or Ultra models, providing a fresh perspective for this evaluation. So, did the SA6 MK2 live up to my expectations and fulfill my long-held dream? Without further delay, let's dive into the details and find out.

FOREWORD:​

• The gear on hand has undergone at least 10-15 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:​

Brand: Dunu
Model: SA6 MK2
Weight: 5.3g per earpiece (without tips)
FR Response: 5hz - 40khz
Impedance: 24 ohms @ 1khz
Sensitivity: 114db
Driver Configuration:

• Bass - 2 Sonion AcuPass Vented dual woofer
• Midrange - 2 Knowles custom midrange driver
• Treble - 2 Knowles custom dual tweeter

PACKAGING:​

The outer packaging of the SA6 MK2 boasts a striking orange color, catching the eye right from the start.

Sliding open the packaging reveals a sleek black box, which instantly piques curiosity. With a simple pop-up mechanism, the box unveils the contents inside. Let me provide you with a detailed list of what's included:

• 1 pair of Dunu SA6 MK2
• 1 carrying/protective case
• 1 Hulk pro mini cable with Q-lock plus modular cable system
• 4.4mm and 3.5mm plugs
• 3.5mm female to 6.5mm male adapter
• 1 cleaning brush
• 4 pairs of SnS tips (S,M,ML,L)
• 1 pair of foam tips
• 3 pairs of narrow bore eartips (S,M,L)
• 4 pairs of medium bore eartips (S,M,ML,L)

Let’s explore the inclusion a little deeper as some of these are worth noting.

CARRYING CASE:​

The SA6 MK2 comes with an eye-catching case that features a striking color combination. The border showcases a vibrant mustard color, complemented by an overall dark green presentation.

The Dunu logo is tastefully embedded on the case, adding to its aesthetic appeal. However, the thickness of the case deviates from the conventional design, making it a bit bulky and inconvenient to fit into smaller bags or sling bags that I typically use for light travel. On the inside, the case is lined with a soft cloth material that provides excellent protection against scratches, ensuring the safety of your cherished IEMs. One minor concern I have is that the case doesn't feature a magnetic closure, relying solely on clamping force. Over time, I worry that the clamping force may weaken, potentially leading to accidental opening of the case. It would be unfortunate if the case were to open unexpectedly, jeopardizing the security of the IEMs inside. Despite this concern, the material used for the case is of exceptional quality, exuding a premium look and feel.

CABLE:​

Dunu has gone the extra mile by including their latest cable, the Hulk Pro Mini, as the official cable for the SA6 MK2. This cable can also be purchased separately for $200. The cable is crafted using highly refined Furukawa single-crystal copper, boasting a 26 AWG thickness. Rather than delving into its intricate details, I'll let you explore the clickable link provided above to discover more about its impressive specifications. I must emphasize that the cable feels and looks premium. It strikes the right balance in terms of thickness, and its soft and non-stiff nature adds to the overall comfort. This is a refreshing change compared to the stiff cable I encountered with my recent review of the UM Mest MK2, which required significant adjustment.

Now, let's talk about its modularity. Yes, you heard it right! The SA6 MK2's cable is modular, offering both a 3.5mm and 4.4mm termination (unfortunately, no 2.5mm option here) to cater to your single-ended and balanced connection needs. This versatility suits my requirements perfectly. The plug system utilized is Dunu's acclaimed and patented Q-lock Plus interchangeable design. Inside the packaging, you'll find a piece of paper providing instructions on how to change the plugs, but rest assured, the process is straightforward.

Just make sure to align the white dots, and you're ready to go. The L-shaped plug adds convenience for phone gamers, ensuring a comfortable fit that doesn't obstruct your hands. The plug sits securely without any wobbly feeling, although it's always wise to handle it with care to prolong its lifespan.

EARTIPS:​

The SA6 MK2 doesn't skimp on the variety of tips provided, as you'll find a total of four different kinds in the package. It's worth noting that Dunu opted not to include third-party tips and instead included their own premium offerings: the S&S tips and Candy tips. The S&S tips, which I believe stands for "stage and studio," were originally included with the Dunu Talos, while the Candy tips were included with the Dunu Kima. On the other hand, the gray tips were included with the Titan S, although personally, I didn't find them to be to my liking. For the duration of this review, I opted for the S&S tips, which proved to be my preferred choice. As for the foam tips, they seem rather generic, but it's still commendable that Dunu included a pair, showing their thoughtfulness towards the users' preferences and comfort.

SA6 MK2’s APPEARANCE:​

The SA6 MK2 boasts an undeniably pleasing and eye-catching design. Its faceplate is crafted from high-grade stabilized wood, exuding a sense of elegance and sophistication.

The shell, on the other hand, is meticulously hand-poured using German nice-fit UV acrylic resin. Each SA6 MK2 is a unique piece of art, as no two units are exactly alike. The transparent base plate allows a glimpse into the internal components, showcasing Dunu's transparency and commitment to delivering quality products.

Unlike some other brands that conceal their internals, Dunu takes pride in revealing the inner workings of the SA6 MK2. With the aid of a lamp or direct light, one can even discern the presence of the three-way crossover.

Additionally, the SA6 MK2 features a single tuning switch, which personally aligns with my preference. Unlike the trend of multiple tuning switches found in some IEMs, I find this approach more focused and purposeful, ensuring a well-tuned sound signature without unnecessary complexity.

COMFORT:​

The SA6 MK2 stands as a strong contender for the title of the most comfortable IEM I have encountered in my extensive review and testing journey. Its comfort level is on par with other highly regarded models such as the Hisenior T2 Classic, TinHiFi T3 Plus, and even the Mest MK3.

Despite the medium-sized shells, the SA6 MK2's lightweight construction ensures a near-invisible presence when worn. Even individuals with smaller ears shouldn't face any discomfort issues. Achieving an optimal seal with the SA6 MK2 is relatively straightforward, although the choice of ear tips plays a crucial role in this regard. Additionally, the nozzle angle is neither unconventional nor obtrusive, further contributing to a comfortable listening experience.

INTERNALS:​

The SA6 MK2 adopts a pure BA (balanced armature) configuration, which traditionally tends to exhibit what is commonly referred to as BA timbre, characterized by a thin and somewhat unnatural sound. However, to my pleasant surprise, the SA6 MK2 demonstrates an impressive ability to minimize BA timbre, with its presence being almost non-existent, amounting to a mere 2%. This is undoubtedly a positive indication of its sound quality. The bass response is handled by two Sonion Acupass vented dual woofer BA drivers, while the midrange is expertly managed by two custom Knowles drivers. Additionally, the treble is skillfully delivered by two Knowles custom dual tweeters. To ensure seamless integration and coherence across the frequency spectrum, the SA6 MK2 incorporates a three-way crossover system.

SOUND IMPRESSIONS:​

The SA6 MK2 was meticulously paired with a range of top-notch audio equipment, including the Hiby RS2 dap, Centrance DacportHD, Ovidius B1, and Fiio K9. To ensure consistency, I used the stock S&S tips and the Hulk Mini Pro cable throughout the testing process. My listening sessions encompassed a variety of sources, including offline FLAC files, Apple Music, and Qobuz studio subscription.

Now, let's delve into the captivating technical aspects of the SA6 MK2!

One aspect that didn't astound me but still impressed me nonetheless was the soundstage. While not as expansive as the Mest MK3, which has spoiled me with its exceptional width and holographic presentation, the SA6 MK2 still offers a commendable sense of space and dimension. The height and depth of the stage create a satisfactory listening experience that draws you into the music.

The imaging capabilities of the SA6 MK2 are absolutely outstanding. It flawlessly positions each instrument and sound element within the soundstage, allowing for a highly accurate and immersive representation. Whether it's the drums rolling around your head, the trumpet of Miles Davis emanating from the far right, or the guitars lurking in the background, the SA6 MK2 effortlessly recreates the spatial intricacies of the music, making the listening experience truly captivating.

When it comes to speed, the SA6 MK2 holds its own. While there are certainly other IEMs with more lightning-fast and agile drivers, the SA6 MK2 strikes a delicate balance. It confidently handles complex and dynamic tracks, effortlessly capturing the bombastic drum solos or intricate instrumentals without any signs of strain or muddiness. The SA6 MK2 prioritizes realism and accuracy, offering a faithful representation of the attack and decay of each note. The result is a highly engaging and lifelike musical experience.

What sets the SA6 MK2 apart is its ability to present music as a cohesive and unified whole. Rather than focusing on individual separation, the SA6 MK2 shines in creating a harmonious blend of all the sonic elements. While some listeners may prefer a more analytical and dissected sound signature, the SA6 MK2's strength lies in its ability to convey the musicality and emotion of a composition, allowing you to truly immerse yourself in the artistry.

The level of detail retrieval exhibited by the SA6 MK2 is commendable. It excels in capturing both micro nuances and macro details, bringing subtle textures and intricacies to the forefront of the soundstage. While the presentation may not be as overtly emphasized or hyper-detailed, it strikes a balance between capturing the essence of the music and being analytical. The SA6 MK2's smooth and refined approach to detailing makes it an excellent choice for extended listening sessions without sacrificing the overall musicality.

One of the most impressive aspects of the SA6 MK2 is its impeccable timbre. Each instrument and sound is rendered with astonishing realism, closely resembling the rich and organic characteristics of a dynamic driver (DD) setup. The SA6 MK2 achieves this feat by nearly eliminating BA timbre, ensuring that every note and tone feels incredibly natural and true to life. It surpasses even some of my beloved pure BA sets, such as the Audiosense DT300 and Seeaudio Bravery Red edition, in terms of authenticity and accuracy.

In terms of source pairings, the SA6 MK2 showcases remarkable versatility. It delivers stellar performance with various chipsets, ranging from ESS for a touch of sparkle and energy to R2R setups like my Hiby RS2 for a smoother and more refined sound. However, the SA6 MK2 truly shines when paired with AKM chipsets, striking an exquisite balance between detail retrieval, treble sparkle, and a natural sound signature. This synergy creates a captivating listening experience that caters to a wide range of musical genres and preferences.

Overall, the SA6 MK2 impresses with its intricate technicalities, captivating soundstage, accurate imaging, commendable speed, balanced detailing, and lifelike timbre. It is a versatile performer that excels in presenting music as a cohesive and enjoyable whole, enveloping you in its captivating sonic landscape.

BASS:​

The bass performance of the SA6 MK2 is reminiscent of the remarkable bass of the Mest MK3, a true flagship in its own right. It exhibits a natural attack and a slightly more gentle approach to note definition, prioritizing realism and authenticity over sheer resolution. It's important to note that the bass of the SA6 MK2 should not be mistaken for being overly soft or muddy; it maintains a commendable level of punch and tightness. The sub bass is rendered with great clarity, though it doesn't reach the level of seismic impact. It dissipates quickly, ensuring a clean and controlled reproduction. On the other hand, the mid bass takes center stage, delivering a forward and textured performance that will satisfy fans of bass guitars and drum kicks.

What's impressive about the bass of the SA6 MK2 is its versatility. When listening to EDM, it provides an engaging and well-controlled bass that never oversteps its boundaries and disrupts other frequencies. Even tracks with less pronounced bass mixing, such as those from Bobby Caldwell, Stevie Wonder, and Alan Parsons Project, maintain a close-to-neutral presentation that avoids sounding sterile or uninteresting. Ultimately, the bass of the SA6 MK2 strikes a harmonious balance, appealing to listeners across the spectrum, whether they prefer a neutral sound, crave deep bass impact, or simply seek a pleasing audio experience.

Graph courtesy and credit to Timmy of Gizaudio

As a bonus feature, the SA6 MK2 includes a switch that allows for bass boosts. Referred to by Dunu as "atmospheric immersion," it's essentially a bass boost function. For the bassheads among us, this feature provides an opportunity to satisfy your cravings and enhance the low-end impact according to your preferences.

MIDRANGE:​

The true essence of the SA6 MK2 lies within its exceptional midrange performance. Without a doubt, it caters to the preferences of midrange enthusiasts and fulfills their dreams of an outstanding set. The magic it works on orchestral tracks, whether it's the compositions of Vivaldi or the masterpieces of Joe Hisaishi, is truly remarkable. If classical music holds a special place in your heart, the SA6 MK2 is a must-have. Personally, I find myself constantly gravitating towards my favorite orchestral pieces whenever I have these IEMs in my ears.

Moreover, the SA6 MK2 does justice to jazz tracks by legendary artists like Miles Davis, John Coltrane, David Sanborn, Lee Ritenour, and Bill Evans. The timbre of pianos, which happens to be my primary instrument, sounds sublime and ethereal through these IEMs. The same can be said for guitars, electric EPs, marimbas, kalimbas, organs, and various other instruments. It's worth noting that the SA6 MK2 has finally replaced my previous go-to set, the Bqeyz KC2, in terms of its exceptional midrange performance.

When it comes to vocals, they deserve their fair share of praise and enjoyment alongside the instruments. The low-end vocal ranges, from the deep and velvety tones of Barry White to the soaring falsettos of Earth, Wind, and Fire, are executed with finesse and precision. The contralto and soprano ranges are equally delightful, although this discussion touches upon the trebles, which we'll address shortly. For now, I must emphasize the ultimate praise I have for the contraltos in female vocals.

If you've read my review of the UM Mest MK3, you may recall my nitpicks regarding its midrange performance. The SA6 MK2, on the other hand, delivers a midrange that is to die for, at least according to my subjective perception. Its midrange prowess has exceeded my expectations and solidifies its position as an extraordinary set.

TREBLE:​

Sensitive individuals will find solace in the SA6 MK2's treble performance. It maintains a safe distance from sibilant territory while still delivering commendable details and clarity. Even in my favorite sibilance test track, "A Long Way to the Top" by AC/DC”, the bagpipes solo sounded smooth and devoid of any harshness. Although cymbals and hi-hats may appear slightly subdued, overall treble reproduction remains pleasing. It's worth noting that if you have a preference for EST drivers and brighter tunings, you may find the treble presentation of the SA6 MK2 to be too restrained.

Non-musical nuances like the breaths of a cellist or the subtle lip smacks of vocalists before starting a line are still preserved, albeit slightly less pronounced. Treble enthusiasts may desire more edge and bite, but on the upside, listening to the SA6 MK2 allows for extended sessions without experiencing ear fatigue. Achieving additional sparkle is possible with neutral-bright sources, typically found in ESS chipsets. The essential characteristic of the SA6 MK2's treble lies in its balanced approach, striking a harmonious blend of relaxation and smoothness without compromising on details and clarity.

It's worth mentioning that soprano vocals that venture into the treble territory may feel slightly laid-back, lacking a touch of openness. If your playlist predominantly consists of such vocal ranges, I wouldn't discourage you from exploring the SA6 MK2. Instead, I suggest approaching it with an open mindset. Some instruments that left a lasting impression on me in terms of treble performance were the brass sections and cymbal strikes. As someone who can be sensitive to treble, I find the treble presentation of the SA6 MK2 to be perfect when I'm in the groove for guilty listening pleasure rather than being critical or analytical. The treble is also perfect when I want to boost that volume a few notches.

COMPARISONS:​

versus Hidizs MS5:​

The MS5 showcases a wider soundstage and offers a slight advantage in note definition and attack compared to the SA6 MK2. It presents a more aggressive and energetic sound signature. However, where the MS5 falls short is in its timbre, particularly in the upper mids, which can be fatiguing to the ears. On the other hand, the SA6 MK2 excels in delivering accurate and natural timbre, which sets it apart.

In terms of imaging, the MS5 outshines the SA6 MK2, even offering a holographic presentation that adds a sense of depth and dimensionality. This is an area where the SA6 MK2 lags behind slightly.

To summarize, while the MS5 may have a slight technical advantage in certain aspects, such as soundstage and imaging, the SA6 MK2 takes the lead with its superior timbre accuracy and natural sound reproduction. Although I appreciate technical prowess, my personal preference leans towards a tuning that prioritizes realism. Therefore, if you read between the lines, it's clear which one I would choose between these two.

versus Softears Studio 4:​

These two IEMs are in a close competition, offering similar price, performance, and timbre characteristics. I must admit that choosing one over the other would be a difficult decision for me, as they both have their own unique strengths.

Both the Studio 4 and SA6 MK2 exhibit warm-balanced tonal signatures, with the Studio 4 leaning slightly warmer. They both showcase a relaxed attack and note definition, but the Studio 4 has an added depth in soundstage that the SA6 MK2 lacks. In terms of meeting my needs as a musician, both IEMs have performed exceptionally well. However, the SA6 MK2 offers a more colored and engaging sound profile, making it a standout choice for versatility in both professional usage and casual music appreciation.

From a musician's standpoint, the Studio 4 may seem like the logical choice due to its closer proximity to neutrality. However, when considering overall versatility, the SA6 MK2 emerges as the superior all-rounder. Both IEMs exhibit comparable technical prowess, and their prices are closely aligned. They are the only pure BA configured IEMs I have tried that deliver astonishingly natural, musical, and organic sound reproduction.

To be honest, either of these two IEMs would make me a happy camper and fulfill my midrange benchmark requirements for a long time to come.

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VERDICT:​

After eagerly awaiting the chance to experience the SA6 lineup, the SA6 MK2 has fulfilled my expectations, albeit with some minor reservations. While its technical performance falls just short of greatness, it still surpasses other IEMs in the $200-$300 range. However, the true allure of the SA6 MK2 lies in its extraordinary midrange. Its lush, rich, and captivating presentation makes it a standout choice for vocal and instrumental enthusiasts, particularly those who appreciate classical music and jazz. Although it may not excel in all technical aspects, it remains a versatile all-rounder that can handle any genre admirably. As a musician and amateur audiophile, I am convinced that the SA6 MK2 deserves a place in my collection.

I would like to express my gratitude to Hifigo and @koyawmohabal aka Practiphile for their generosity in providing me with the opportunity to audition and review the SA6 MK2. Their patience and support are greatly appreciated.

WHERE TO BUY:
Amazon
HiFiGO