Dark Matter Audio Labs DMA6 - Back to the Lab Again
3⭐️
+ Mid-centric U-shaped tuning helps put a spotlight on vocals and instruments
+ Clean and well-separated bass with just a bit of extra oomph
+ Excellent instrument clarity and vocal timbre
+ Rolled-off, fatigue-free treble with zero sibilance
+ Decent soundstage and note weight
+ Durable and secure carrying case
+ Tons of customization options
- Not for bass enthusiasts
- Treble lacks extension and air
- Layering and dynamics underperform
- Pragmatic accessories and unboxing experience
- T2 connector type is certainly a choice
- Underwhelming shell and cable build quality
- Price-to-performance is hard to justify with so many great mid-fi IEMs on the market
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 provided to me by Dark Matter Audio Labs for a review period through a Head-fi tour. I receive no compensation, and all thoughts and opinions are my own.
Non-affiliate link for those interested:
https://darkmatteraudiolabs.com/products/dma6-ba-6-omnifit-universal-iem
Gear used:
●Samsung Galaxy S25 Ultra
●Various DAC/amps
Source:
●Listening was done using Amazon Music HD/Ultra HD and local FLAC files.
Introduction:
Dark Matter Audio Labs is a homegrown U.S.-based IEM manufacturer. The company was founded by two very experienced individuals in the audio industry: Kal Tocen and Dave Friesema. They have over 45 years of experience between the two of them, Kal as an audio engineer and Dave with previous experience at both Etymotic and Westone. Most of Dark Matter Audio Labs' work so far has been tailored toward custom IEMs for performers and musicians, but they seek to expand their influence into the universal IEM space. Interestingly enough, all of their currently available universal offerings only come in all-BA configurations. The model made available for tour is the DMA6, which, as you may have guessed, features six balanced armature drivers. The DMA6 has a starting price of $1350, with many customization options available for an additional fee. Let's break down this universal IEM from Dark Matter Audio Labs and see how it performs.
Build, fit, ergonomics:
As this is a tour unit, the unboxing and accessories may be a little different than retail, but I will assume the package I received is an accurate approximation of what a customer could expect. The DMA6 does not have a big, fancy unboxing experience like some other boutique brands. What arrived was a small, matte black box, and inside were just a hard-shelled case containing the IEMs and cable, and some branded stickers. The shells themselves are made of solid resin and come in various colors depending on the choices made during ordering. This pair has a blue, semi-transparent body and a glittery white faceplate featuring the DMAL logo. The internals can be visualized through the shell, but the resin quality isn't the greatest. Upon close inspection, There are some noticeable imperfections and also a slight cloudiness. I understand that smaller companies can't always compete with the Chi-fi giants when it comes to production costs and scale, but I expect the build quality to be on par, especially if the asking price is multitudes higher. The shell size is fairly large, and they are a little bulbous in shape. Luckily, the nozzle is angled in a way that makes for a comfortable fit and seal for me. The shells also appear to be unvented, but I didn't experience any pressure buildup. The insertion depth is a little deeper than average, and the nozzle measures 5.6 mm. There is no lip, meaning tips are more likely to fall off, which was a bit of a problem for me during testing. The DMA6 utilizes the T2 connector type, which is much rarer than the typical 2-pin or MMCX. This connector is also used by Etymotic, Westone, and other custom IEM brands. It makes sense considering Dave's background and the fact that most of their products are customs, but from a hobbyist standpoint, it's a frustrating connector choice. I would love to use the myriad of cables that I have at my disposal with the DMA6, but I don't own, nor have I ever encountered, any IEMs with this connection type in the past, so the stock cable will have to suffice. Speaking of cables, this IEM comes paired with a 3.5mm terminated Linum SuperBaX silver-plated copper cable. It's a smooth, pliable, and very thin cable, but also lightweight and strong. It's obviously made with comfort in mind, and I would imagine it's easy to wear and hide under clothing, as some performers tend to do. But coming from the hobby side, I much prefer a thicker and more robust cable with a balanced termination. At least it has a very secure, lockable chin slider. The DMA6 did not include any tips inside the case, which makes sense considering most of their IEMs are custom-molded and don't require tips. The company supplied a separate tip case containing three pairs of Divinus Velvet silicone tips and three pairs of foam tips for each tour participant. I'm assuming the same would be made available with the purchase of one of their universal models. I tried the included tips as well as many others in my collection and settled on the Divinus Velvet. The case is a nice hard-shelled plastic Pelican-style case made by Nanuk. It has foam cutouts for the cable and IEMs, as well as a plastic rectangular insert that I'm assuming is filled with a moisture-absorbing desiccant like silica gel. This is actually a nice touch to help keep the IEMs in pristine condition, especially considering performers may be drenched in sweat after a show. The other accessories of note are a cleaning tool, a silicone cable tie, and the Dark Matter-branded stickers that I mentioned earlier. Overall, the build quality is a little disappointing, and the accessories are fine, if not a bit too pragmatic. The resin of the shells has some imperfections, and the choice to use the T2 connection type is not one I would have made. The thin, somewhat cheap-feeling cable is not surprising, considering most of the company's business is marketed toward musicians and performers, but audiophiles will expect something better for the asking price.
Sound impressions:
I would describe the DMA6's sound signature as a mid-centric U-shaped tuning with a mild to moderate bass boost and a steeply rolled-off treble response. This one is not particularly difficult to power and can reach high volumes with a simple dongle, but I found that it needed some amplification to reach its true potential (more on that in the paragraph below). The note weight is great. It's very natural and falls just in the middle of thick and thin to my ears. The detail retrieval is solid, but I don't think it's really anything to write home about in this price range. The soundstage is a little wider than it is deep or tall. It's not quite spherical in shape but more oval, and the space is utilized well. The timbre is one thing the DMA6 does very well, which makes sense for an IEM that's marketed towards musicians and performers. The imaging is decent with good accuracy and precision, but like the detail retrieval, I think it performs just well enough for its price range. Unfortunately, the dynamics fall a little flat and really only come to life at higher volume levels. The separation is commendable, and there's space between frequencies when appropriate, but the layering could be better. The overall tuning doesn't quite flow as effortlessly as I would expect at this price bracket. On the whole, I think the technical performance is about average for this tier. The timbre is impressive, the note weight and soundstage are decent, and the detail retrieval and imaging are solid; however, the dynamics and layering could use a bit of work to get up to the level of the rest of the technicalities.
Moving on to source pairing, the DMA6 comes with a standard 3.5mm terminated cable, so I first wanted to test it with just a simple 3.5mm dongle. Well, for all those Apple dongle purists out there, let me just say that in my experience, sources absolutely matter, and the DMA6 is a great example. The sound was pretty disappointing until I gave it some amplification. Even a cheaper dongle DAC like the iFi GO link Max was enough to bring it to life. However, this wasn't my ideal pairing because it made the upper midrange sound a little too thin. The iFi hipdac 3 added more bass rumble and an analog quality to vocals, but the dynamics and engagement factor took a hit, making it sound a little flat. The Questyle Sigma brought out the best in the technical performance, increasing the separation, detail retrieval, and soundstage. Unfortunately, it didn't do much for the upper midrange thinness, and the overall note weight got lighter, which I didn't care for. The source that made the ideal pairing for me is the Muse HiFi M6 Double's tube mode. It adds a little weight to vocals and instruments and also a bit of bass robustness without negatively affecting the tuning balance or technicalities.
●Mids - The midrange is surely the focus and star of the DMA6 show, but is there enough here to carry the majority of the tuning? For me, I'm going to have to say, "Not quite." Now, don't get me wrong; I'm a huge fan of a mid-centric tuning, but it has to be done right and executed well. The good news is that instruments and vocals here have a very nice level of naturalness and a lifelike quality. The pinna gain starts a little earlier than some more conventional tunings, and the mids as a whole are emphasized a decent amount. Actually, they might even be a little too accentuated for me, or maybe it's that the energy level is just a notch or two above what I think is warranted. Essentially, vocals come off very forward, and though the shoutiness is not considerable outside of higher volumes, they can sound a little bit strained or forced at times. This is probably a deliberate choice by DMAL, though, to make vocals pop more so singers and performers have an easier time hearing themselves. But from a purely musical enjoyment viewpoint, the tuning lacks balance and a certain cohesiveness. Overall, the midrange is good, but for $1000+, I expect a lot more. On top of sounding natural, I also want a musical and emotionally stirring vocal presentation, which the DMA6 doesn't really deliver. Vocals are also quite emphasized and somewhat imbalanced, but then again, I'm not sure if I'm really the demographic for this IEM since I'm not using them for performing, mixing, or recording.
●Highs - The treble response is a bit like the bass in that it feels like an afterthought compared to the midrange. It rolls off fairly steeply and, in my opinion, takes it a little too far. There is a certain level of energy here, but it's concentrated in the lower treble, leaving the upper portions underserved. Besides contributing to an imbalanced presentation, the emphasized presence region leads to certain vocal notes being just a tad harsh at higher volumes. Generally speaking, though, there are really no issues with irritability, fatigue, or sibilance. Snares actually come across a little recessed and not as snappy or clear as they should be. Cymbals are mostly correct with no fears of splashiness or metallic timbre, but they are still a little underrepresented. I find that the treble is not particularly crisp or sparkly, and it's missing a certain edge, but it does manage to stay just relevant enough in the mix while allowing the mids full carte blanche to take the spotlight. Overall, the DMA6's treble is just kind of there and somewhat irrelevant to the grand scheme of the tuning. It's obvious that the focus is on the midrange, and in that vein, the treble performs its subordinate role admirably enough. No sibilance or harshness is always a plus in my book compared to the other direction, but I can't shake the feeling I'm trading some of the upper portions of my music in favor of more midrange focus, and for the $1350 price tag, that's a bit of a bitter pill to swallow.
Comparisons: Credit to Passion for Sound for the graph. Unfortunately, this is the only graph I could find and his database doesn't include any of the other IEMs I used for comparison.
● Letshuoer Cadenza 12 ($2000) - The Cadenza 12 features 11 BA and a single DD versus the 6 BA configuration of the DMA6. This is the only IEM in the comparison section that is priced higher, but since Letshuoer has been in the universal IEM market for quite some time, I think this one makes for a decent matchup to see what DMAL brings to the table. Starting with the accessories, neither set has a particularly great cable, but at least the Cadenza's is modular. It also comes with a smaller and more premium-feeling case, but the bigger hard-shelled case of the DMA6 provides better protection. The build quality and designs are polar opposites. The Cadenza features a heavier, solid metal shell with a mirror finish, while the DMA6 is all resin and much more colorful. Personally, I like the Cadenza's aesthetic more, but to be fair, DMAL does have many customization options available to suit its customers' tastes. The Cadenza is also smaller and offers a more comfortable fit for my ears. When it comes to sound signature, these two don't share a ton of similarities outside of both having a generally U-shaped tuning profile. The DMA6 features more upper midrange emphasis and a heavily rolled-off treble, while the Cadenza is a little flatter and better balanced across the frequency response. There's actually a pretty sizable difference in the bass of these two. The Cadenza does have a bit more quantity, but it's actually the better impact, rumble, weight, and extension that make the bigger difference here. The Cadenza's single DD simply sounds more natural, visceral, and just plain more fun than the DMA6's BA bass response. I'll also add that the Cadenza's low end has better texture and is more resolving too. The one thing the DMA6 may have going for it is a very slight edge in separation. In the midrange, the similarities start to show. Both sets have forward, energetic, and engaging vocals, though the DMA6's are a little more prominently featured, partly due to the reduced bass. The Cadenza's midrange, though, is better balanced with more emotional weight and a more natural timbre. The DMA6 may be a bit better at highlighting and separating vocals from the rest of the frequency response, but the Cadenza sounds more cohesive. It also has noticeably better instrument detail and timbre. In the treble, neither set is particularly bright or energetic, though the Cadenza has much better extension and air. The DMA6's rolled-off response makes for a somewhat incomplete-sounding top end, and the lower treble can be a little intense at higher volumes. The Cadenza is fatigue-free, more detailed, and much better balanced, but I will say the DMA6's steep roll-off does help the mids take a more prominent role in the mix. Regarding the technicalities, the Cadenza is definitely the better performer across the board, but the DMA6 comes close in timbre, separation, and note weight. For me, this one comes down to a few factors, not least of which are the balance, technical performance, and build quality. I understand metal shells aren't everyone's favorite, and I admit that I typically prefer resin myself, but there's a sizable gap here between the quality of the shells of these two sets. The Cadenza is not only sturdier, but the contoured shape and overall craftsmanship are better as well. When it comes to comparing the sound, though, let me be frank: there isn't anything the DMA6 does that the Cadenza doesn't do better, at least for me. Be it overall balance, bass extension, vocal clarity, or treble sparkle and air, the Cadenza just sounds like a vast improvement. It also makes for a much better all-rounder, and the technical prowess is higher and more in line with my expectations for the price. Honestly, the Cadenza wins this contest easily, and it's not close. But again, this whole review and comparison come from a hobbyist's perspective, and performers and musicians may not concur with my opinions.
My pick: Cadenza 12
● Letshuoer Mystic 8 ($1000) - This is a contest between two all-BA IEMs: the eight drivers of the Mystic 8 versus six in the DMA6 (I love it when naming conventions make sense). Both sets come with a thin cable, but the Mystic 8's is much more pliable with a nicer weave and a softer feel. The DMA6 definitely has the better case, though, as the puck-style of the Mystic 8 is not my favorite. The build quality differences in the shells are similar to those of the Cadenza 12. The Mystic 8 has a smaller yet sturdier titanium alloy shell, but it's also heavier than the full-resin DMA6. The Mystic 8 also features a unique, eye-catching cat design, but DMAL offers many customization options. Personally, the Mystic 8 fits me a little better, but it's easier to keep a good seal with the DMA6. Moving on to the sound, the tunings aren't super similar, but I think they are still worth comparing due to the price and driver configuration. The DMA6 is more U-shaped with a larger bass shelf, more upper-midrange emphasis, and a steeper rolled-off treble, while the Mystic 8 is basically the epitome of neutrality to my ears. In the low end, the DMA6 is definitely the bassier of the two, even if it doesn't have an inherently bassy tuning to begin with. It also has more impact, a better sense of rumble, and a deeper-reaching extension, but I'd say the Mystic 8 is a little more resolving and has a cleaner presentation. The midrange, though, is where the Mystic 8 truly shines. While both sets put a lot of focus on the vocals, the Mystic 8 manages to do it in a much more natural-sounding way. The DMA6 is a little too forward and overemphasized, which makes vocals come off as a bit strained and forced. The Mystic 8 is smooth and melodic while also being quite organic and better balanced with the rest of the frequency response. It's a little better separated from the bass too, and the entire midrange has a wider and more open presentation that allows artists room to showcase their talents. I will give the DMA6's vocals some credit for being a bit more energetic and engaging, but the Mystic 8 has better instrument detail, separation, and tonality. There's quite a difference in the treble presentation of these two as well. The DMA6 rolls off much more steeply, leaving a gap in the air and extension. The Mystic 8 has a much better balanced and more complete-sounding treble response, and it does so without any harshness, sibilance, or fatigue. The difference in cymbals and snares really is eye-opening (or maybe ear-opening would be more accurate). Essentially, the Mystic 8 sounds more accurate and natural, while the DMA6's top end feels lacking and a little muted. When it comes to technicalities, the cheaper Mystic 8 actually performs just as well, if not better, in nearly every category, most notably the soundstage and imaging, but the DMA6 does have better timbre. For me, this one really comes down to the technical performance and overall tuning balance. Despite being about $400 more expensive, the DMA6 doesn't really offer better technicalities, durability, or accessories. The only two things it does slightly better are the bass and the engagement of vocals, but in my opinion, that's not nearly enough to make up for its other deficits. I'm hard-pressed to think of many scenarios where I would choose the DMA6 over the Mystic 8 because the latter simply has more to offer, especially in terms of tuning balance and overall price-to-performance.
My pick: Mystic 8
● Juzear Harrier ($330) - This matchup pits the 1DD, 6BA, 2 microplanar tribrid configuration of the Harrier against the 6BA of the DMA6. When it comes to accessories, the Harrier comes with a nicer, thicker cable compared to the very thin one of the DMA6, but the latter has a much larger and sturdier case. Build quality-wise, both mostly consist of resin, but the Harrier is smaller and utilizes a metal nozzle. Both are comfortable enough for me, but the DMA6 does offer a deeper insertion that I prefer. The designs are quite different, and I personally like the eye-catching colors of the DMA6 over the muted and neutral Harrier. There is obviously a sizable price gap between these two, but I think it warrants a comparison as they follow a similar tuning target. Both are U-shaped in nature and feature a moderate bass boost, upper-midrange emphasis, and rolled-off treble. The biggest difference in this comparison takes place in the bass, where the Harrier has more sub-bass quantity and a sizable mid-bass tuck. The DMA6 is a little better balanced in the bass, but it cannot reach the level of the Harrier's extension and rumble. It does have a little more impact, cleaner texture, and better resolution, though. The decay is similarly a touch slower and quite natural on both, but the DMA6 has a quicker attack. In the midrange, despite both sets emphasizing vocals, one comes across much more lively and engaging. The DMA6's mids are better separated, more detailed, and positioned a little more forward in the mix. The Harrier has a slightly later pinna gain rise, which translates to an imbalance between male and female vocals. It's also a little darker and heavier sounding and less emotionally charged. Lower-registered instruments are also better represented on the DMA6. The treble responses are actually quite similar, which is one of the reasons I sought out the Harrier when looking into my options for the comparison section. Both are steeply rolled off and lack a sense of air and extension, but the DMA6 manages to fare a hair better in these areas. It's also just a touch more sparkly and detailed, but honestly, the differences are pretty minimal. Moving on to the technicalities, the DMA6 performs better nearly across the board, including more natural timbre and better detail retrieval, imaging, and dynamics, but the Harrier has more note weight and better layering. For me, this one purely comes down to tuning execution and overall enjoyment. I'll admit that I didn't expect the Harrier to hold up very well in this comparison, but the DMA6 also didn't perform quite as well as I thought it would. My review of the Harrier makes it clear that I'm no fan of this particular IEM, as it has a tendency to sound lifeless and boring to my ear. The treble balance certainly has something to do with that, but the DMA6 has a similarly rolled-off treble, and it manages to sound much more engaging. Therefore, I'm inclined to call it a problem with the execution and less with the choice of the tuning itself. The Harrier has a bigger and deeper-reaching bass response, which I like, but the DMA6's emphasis on making vocals sound natural and emotionally charged helps me better connect to my music. It also touts better technical performance and a more mature and refined quality that I expect when moving up in price. If I'm being honest, neither of these two sets managed to capture my heart, but one is clearly better than the other, and it's made more apparent in a head-to-head battle.
My pick: DMA6
● Softears Volume ($285) - This brings us to our last matchup between the 1DD, 2BA hybrid of the Volume and the 6BAs of the DMA6. The Volume has quite a nice unboxing experience, especially for the price, while the DMA6 is more practical and straightforward. The accessories also reflect this. The Volume has a thicker cable, a nice leather-clad carrying case, and comes with plenty of tips and extras. The DMA6 has a very thin cable, which I don't particularly care for, but the large carrying case does provide great protection. Moving on to the tuning, the Volume is an older release (ancient, really, in IEM terms) and comes at a much lower price. However, it's one of my favorite mid-centric sets in the mid-fi tier, and I think these two share some similar tuning DNA worth exploring. Both have a generally U-shaped sound signature with a mild to moderate bass boost, emphasis in the upper mids, and rolled-off treble. Starting with the low end, the Volume's bass is thicker, heavier, and more authoritative thanks to the dynamic driver. It also has a deeper extension, more rumble, and slower decay. The bass plays a more prominent role in the Volume's overall tuning balance than that of the DMA6, though the latter displays notes with a bit more speed and abbreviation, which lends well to a cleaner and more resolving presentation. In the midrange, vocals are pushed a little more forward on the DMA6, and they have added energy and clarity. The volume, though, has a touch of warmth, a smoother presentation, and a more emotive and soulful style. The DMA6 has better instrument detail, timbre, and tonality, but the Volume is more musical, melodic, and emotionally charged. In the treble, these two have similar extension and air, but the DMA6 fares just a touch better in both. It's snappier, crisper, and a bit more sparkly too, but the Volume has less energy, and it doesn't fall victim to as much harshness on certain "s" and "sh" notes that the DMA6 suffers from. When it comes to technical performance, the DMA6 performs better nearly across the board, notably in dynamics and separation, but the Volume has better note weight. For me, this one essentially comes down to tuning execution and price to performance. The fact that I still love and enjoy this Softears release, even among the plethora of other mid-fi and even some kilobuck IEMs that I've tried, speaks volumes (pun absolutely intended). There's just something about the balance and tonality that hits my ear so well. The DMA6 has a more resolving bass, further-reaching treble extension, and overall better technicalities, but the midrange of the Volume is smoother and more emotionally expressive at less than a quarter of the price. Add to that the touch of warmth, inherent musicality, bigger bass rumble, and the more favorable unboxing, build, design, and accessories, and you may start to see why I rank this IEM so highly four years after its debut.
My pick: Volume
In conclusion:
Dark Matter Audio Labs is mostly known for its custom-molded IEMs, but now the company is looking to expand its appeal and reach a new audience of audiophiles and hobbyists with its universal models. I'm very grateful to be one of a select few to be able to participate in a tour of the DMA6, and I think this model represents a solid foundation when it comes to tuning and technical performance. Utilizing just six BA drivers, this mid-centric IEM displays nice vocal clarity, detail, and timbre, though the overall balance could use some work. The bass and midrange play very well together, but the treble extension and air leave something to be desired. There are also some improvements to be made in the build and design to better appeal to the hobbyist side of the market. The company offers a slew of customization options, but the resin has some imperfections that undercut the quality of the work that goes into producing each pair. I also think many would find the included cable to be a disappointment for the $1350 asking price, and the choice to utilize the T2 connection type over a more universal type like 2-pin or MMCX makes it difficult to cable roll. In my experience, the DMA6 works well for vocal-focused genres like singer-songwriter, folk, and country, but is not as suitable for rock, EDM, pop, or rap music where more bass is definitely warranted. Taking everything into account, I have to award the DMA6 a three-star rating. I do think there are some good things to build on here, but as an audiophile and hobbyist, this one just doesn't appeal to me. There is no shortage of great companies and products in the IEM world, and the increase in quality, competition, and price-to-performance in the last few years has made it that much harder for newcomers to break into the market and carve out their own space. I would love to see Dark Matter Audio Labs thrive, as they obviously have great passion and dedication for what they do, but it's hard to recommend a product like the DMA6 when others offer similar or better performance with improved build quality and accessories. Of course, this is just one reviewer's opinion, and I understand that the company's offerings may be more beneficial for stage performers and musicians, so those seeking a durable, custom-molded, and custom-designed solution should give Dark Matter Audio Labs a look.
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