

Sound Rhyme
Who is Sound Rhyme? Well they are a fairly new manufacture, at least a new one that has come to light in the last 8 months. You know, the latest big IEM thing..........with many local members getting into the brand and discovering products from the line.
Sound Rhyme as of September 18th offers:
$749.00 Sound Rhyme DTE900 4EST+ 4BA + 1DD
$369.00 Sound Rhyme SR7 1DD+6BA Hybrid
$749.00 Sound Rhyme SR8 14BA
$59.00 Sound Rhyme SR1 Bass 9.2mm (single full-range DD)
$459.00 Sound Rhyme DTE500 2EST+ 2BA + 1 Dynamic Driver Hybrid
$149.00 Sound Rhyme SR5 4BA + 1 Dynamic Driver Hybrid
Sound Rhyme:
So you know the deal, a new manufacturer comes along and gains a following, yet all this just happened, and is happening as we speak. Sound Rhyme is the brand of the moment!
@AmericanSpirit
He started a Head-Fi Sound Rhyme thread back in early February of 2023 beginning with the $149.00 4BA/1DD SR5. He called it an “undiscovered hidden gem”….this business moves fast, as now you can choose from six Sound Rhyme IEMs. Anyway, this is the very first Sound Rhyme I have been introduced to, and I have to say the company is doing a number of things right. From what I can tell, this SR7 is a good example of bringing a few new ideas to the hobby, resulting in more sound for your dollar spent. I know that statement sounds like hyperbole, but I will get into the hows and whys.
Sure there are all kinds of IEMs coming out at this point in time, yet new companies still figure out ways to get ahead. This Sound Rhyme company is giving you more as a vista to get ahead of the pack, extras in order to get noticed apart from the other manufactures. Even the overall shell look shows-up dynamically different and original?

SR7 key features:
2 x Knowles Balanced Armature 33518
4 x Sonion Balanced Armature 26U
1 x 9.2mm dynamic driver
2 tuning switches, 4 kinds of tuning mode
Choose 3.5mm or 4.4mm plugs (When ordering)
Two IEM cases, one a 128 gram aluminum screw-down “chamber” and one the regular case for accessories
ENVISIONTEC 3D equipment made 3D printed resin shell
8 strand, Silver Plated Oxigen Free Copper HI/Fi cable
Specifications:
Model: SR7
Driver: 1DD+6BA
1 x 9.2mm dynamic driver
4 x Sonion Balanced Armature 26U
2 x Knowles Balanced Armature 33518
2 tuning switches, 4 kinds of tuning mode
3-way crossover
Impedance: 12ohm
Frequency Range: 10Hz-31.5kHz
Connector:2pin 0.78mm
Cable: 8 strands silver-plated cable

Build:
You are greeted with flush 0.78 2Pin connectors, and upon closer inspection the nozzles are formed from metal with a very well made screen of wire sitting perfectly flush and uniform from edge to edge. There is a single air-vent shown next to the DIP-switches. And with all this.......still the most amazing addition is the semi-custom overall shape. At least this was my biggest thing to notice? Reason being is the size sits probably 3/4 of the way to what would be considered large, but due to the form (as they are not that wide) they almost feel like medium inside your ears? The low weight of 5 grams each goes ahead to bring the greatest of fitments. And while I got a good fit with the included ear-hooked cable, my slightly different Penon OSG aftermarket cable (without ear-hooks) fit fine. As far as faceplate design, I really didn’t think it was that thrilling from pictures, but in real-life it’s quite the looker. Hard to explain......and I’ve never seen a faceplate construction like it; hand painted with extra attention to detail! The back part of the IEM shows-up semi-transparent grey-blue, so you can see the drivers.



DIP-switches:
Your Sound Rhyme SR7 will come with both switches in the up position. This arrangement provides the biggest stage, and I tried it just this way (as it was burning-in) for my first 4 days of listening, as the unit was burning-in continuously. I tried the Han Sound OCC ZENTOO aftermarket cable, and the Penon OSG aftermarket cable, as well as the included cable. Really after 124 hours of burn-in the sound came together and became integrated. DD bass was smoother, and became clearer with the 6 BAs? All three cables were 4.4mm and I always used my Sony WM1A with MrWalkmans firmware added. Surprisingly I landed on the included cable and used it for the rest of the review with my regular wide-bore silicone ear-tips. I found the Sony WM1A to be the perfect DAP to use, accessing its expanded midrange tonality.
All-up: Soundstage
This must be manufacturer preferred as it offers the widest stage? I just went with it, getting to know the SR7. Probably all-up was showing-off technicalities? Later going to the POP setting (all-down) was the total opposite, and the switches really do something here to control tone. I will continue this talk of the all-up settings later.
All-down: Pop Music
Tell me, how do you even know the benefits of both-up until you try the opposite? LOL Both down gives you a more controlled bass, and more conservative take on playback. To me it also left focus to hear the vocals, due to the bass recession. But so far I have no issues with either style of playback, though really my heart calls out for the all-up position, the most bombastic style of replay. Still when I say bombastic, it’s a careful style of bombastic, if that even makes sense? But here Pop playback is careful and controlled, even and well presented, while still showcasing a trimmed-up stage and flamboyance. I picture Japanese Girls listening to CANDY CANDY with this setting and being totally smitten with replay. Careful, smooth and controlled, slightly ironed-out, and easily digestible CANDY.
One-up/two-down: Heavy Bass
By the way since I’m tweaking these DIP-switches all over the place, I wanted to clue you in on a little secret to doing the switches. You use one of those plastic tooth-picks that has a floss-brush at the other end. This way has a slight spring action, plus the pick side is soft and never creates scratches. Super, super easy, once I discovered this, there was no other way to do the switches…..they almost switched themselves. Funny as I was expecting a lot of bass, but this setting is good too. Probably one I won’t be using, but nothing wrong with it, the reason I say this is that vocals are still really well maintained. So to summarize progress, we are given real tunable switches that do noticeable changes, yet the changes are all very acceptable, and nothing sounds too out of whack.
One-down/two-up: Clear Vocal
My gosh, they were not kidding when they described what is in-action here. Absolutely beautiful here. Man, this is great…..and I know I said I would revert back to both-up settings for the rest of the review, but this is truly something else. I’m listening to a vocal track and it is really emphasized into vocal placement? I know that is the setting, but I had no idea this setting would really work as good as it is doing? The reason it’s so good is because these are warmish and bass effective IEMs to start with, so what we are getting now is an incredible balancing act here. And I want to point out, no way is it too much or too intense of vocal range, where there is too much pinna gain….. really it is still smooth and comes-off almost simply offering more detail, due to how the bass was repositioned. Often what can happen with vocal enhanced IEMs is you end up with too forward of mids........but not here. What "Clear Vocal" does is open the stage and gifts us clarity, due to the new bass stance.
The other note I want to point out was before burn-in and personal sonic acclimation there was a tinge of BA timbre, and in this setting you would think that metallic timbre would become noticeable.....but it's gone? Maybe due to the Sonion branded BAs and Knowles branded BAs. This is absolutely a setting I could live with and leave on……..permanently. I don’t want to say this, because it sounds dumb, but I will anyway……..the SR7 may be the very best actualization of switches I have come across?
Cable:
Well, I have a history of regularly bagging the included cables provided. Really it’s backwards, as I should give them a chance. But if there is any sense to this madness.......how do you even know if the included cable is good without trying other cables? You at least have to try and unlock some possible potential, if it's there.
The cable that is provided is the one I’m using for the whole review. Yes, the added OSG cable provided a slight difference and I did see value in using it, so I don’t want to discourage the cable believers out there. But truthfully the included cable is even better than it looks. Silver plated 8 strand, and it has great ergonomics, no stethoscope effects or anything. All metal hardware except the chin-cinch which is a clear bead. Another funny thing I noticed is the 2Pin holders have microscopic + and - symbols on them. There is no branding on the cable, but it is medium thickness and 100% pliable…….really an all-out joy to use sonically. Somehow I’m thinking they searched and found the totally correct cable for the SR7?




Package:
Note screw-down case, regular case, two pairs of foam ear-tips and three pairs of silicone ear-tips. Cable and IEMs.


The SR7 comes inside of this gorgeous 128 gram screw down case milled out of solid aluminum. Inside you will find two layers of foam (plus a foam liner under the lid). The top layer is the size of the IEMs, the second bottom layer the size made for the nozzles.
Drivability:
There was a time (not too long ago) when we were in a hit or miss situation as far as using a phone for audiophile listening. Those days are long gone with many newer IEM set-ups. I used a 3.5mm cable to access the standard 3.5mm output from an old Samsung phone. Incredible really, as the SR7 is perfectly balanced and has a nice middle warmth along with a big stage, really way bigger than expected in this union? So need an IEM for out-and-about……the SR7 is a perfect choice, especially with the major sound occlusion provided by the deep-seated semi-custom form! Ditch the Dongle, ditch any extra amps……you really don’t need them here….simply out of a phone you are fine. Yet if you do want the next level….of course a Dongle or DAP will take you there. Probably the great separation and stage (plus authority) is what (or at least part of why) this phone use works out so well…………..recommended.
Soundstage:
Even though the soundstage is big here, there needs to be a careful understanding of how exactly it works. Soundstage is incredibly dependent on source files. Get the SR7 a compressed stage from your older un-listened music file and become amazed how it doesn’t throw a big party between your ears. Nope, with that said, the size of the SR7 stage also has the ability to somehow go ahead and show subtle differences between modern well-recorded and sonically expanded stages. Also just because there is a setting that is used to maximize stage, that doesn’t mean the 3 other sound profile settings are offering up a lesser stage in the end. Yet frequency in playback between each of the four sound settings does affect playback stage………..with the both up setting somehow getting stage from the lows and the highs. Thus more bass frequency and more volumes of bass size into the stage.
With the above stated the soundstage sounds ultimately natural, and still natural at each setting. Why, because somehow it’s always connected here. But as an example in (both up) the stage still keeps relevance to just how much soundstage is in the song. These abilities are formed with every direction the stage takes place in. The soundstage is wide, deep and probably holds the least in the abilities in height, yet that is well done too. But the stage is primarily wide and deep. This depth allows for wonderful itemizations of spacial elements. Also often a soundstage can be synthetically enhanced through bright trebles, yet none of that is going on. The treble seems correct and natural in the end, and really one of the strong points here.
Treble:
Faint sparkles showcase an adequate but not any form of enhanced imaging or technicalities held with-in the stage. Meaning the treble is average yet bigger in relation to the price point, just big in imaging size and layers. Every once in a while there is an extra filigree (of cymbals) showing those 2 Knowles 33518 BAs are doing their thing, yet not super expanded out into the stage, at least not farther out from the rest of the stage, which is nicely large.
Midrange:
Such effective 4 Sonion 26U midrange BAs offer-up the size and clarity that comes with added driver mechanisms, big smooth extensions of midrange action holding (just like the treble)100% perfect timbre. At the same time tuned slightly reserved as far as vividness. What vividness is arrived at is through pure size. Just like a big truck in public is more noticeable simply due to size, but not paint job. Meaning there is grandeur here but a smoother integrated style. With that said vocals are not the brightest I've ever heard, and not super bright even while using the vocal setting.....yet these are still very much vocal centric. A full midrange allows for fully present and lush vocal textures, while placed into a noticeable midrange focus. Such a dialed-in midrange comes off neither pushed or pulled, but densely natural. Such a note-weight is encountered across the board, but limited in decays and note fall-offs.
Bass:
A single 9.2mm woofer goes ahead to become carefully subdued and faster upon use of the vocal setting, yet upon fully actualizing the bass (with the bass switch) it is nothing short of very big. While still offering pace and rhythm, there can be (a guilty pleasure style of) bass bleed found with bass setting use. Meaning despite the bass sloppiness, somehow musicality shows through? With the switch pulled down a more careful and controlled bass experience can be arrived at, also hearing the bass take a slightly back seat demeanor, but not 100%, meaning the whole message the SR7 is conveying centers around a warm and smooth style of playback balance.
Music:
My favorite part of the review:

Lorne Balfe and Andrew Kawczynski
Grand Turismo OST
Academy Race
44.1 kHz - 24 bit
Anyone listening to this OST should start-out by listening to the first song first.....this example is not the first song. Reason being that they introduce the theme at the start, then come-up with variations on that theme later. In just 10 seconds you will know why I switched the DIP-switches back to up/up....for stage! I want to hear it all, I want a home theater experience here. Any issues with my early testing are a thing of the past. Using the included cable we encounter pace and clarity in the bass department. In fact it’s the bass that will first emotionally move you in this song. Let me explain some IEM build theory for you. So if you were wondering what usually is the main difference from the Sound Rhyme SR7 and a different $100.00 IEM this explanation will suffice.....plus it will help explain this particular song. Often IEMs with less drivers simply put out less sound, the sound is not as big or as contrasty. So that $100.00 IEM, even though (maybe) technically good, and balanced……can only do so much. It will earn respect for being even, complete and correct……but it will lose points in size of replay normally. This is my realization after testing multitudes of IEMs in many price brackets over the years. This is what we are provided with here, SR7 size. Seven drivers, six of which are name brand Sonion/Knowles and they are providing the dynamic size here……a big size, but more than that this size is also filled-in with details. Now if those were not enough the 9.2mm DD does the rest. Now all that is fine, except we need something to play, we need something to actualize this experience. Meaning most of the time a single guitar in a room (as a recording) is not going to do it. While it may be technically correct and harmonically pure, it is not offering the stage of a well recorded orchestra or what an orchestrated OST can do! Sure there is alternative value to both (big stage and small stage) styles of music. There is nothing wrong with the simplicity of a single guitar and singer. If you have ever listened to a high-end stereo demonstration, often simplistic song files will be chosen by the demonstrator. Such an example of only a drum track may show a style of perfection in playback. This is simply because it’s easy to playback. There is a single source recorded (even with multiple microphones) and the drivers have to make sense of only one instrument. Here is the opposite, in that we have an amalgamation of elements…..a mix of challenging fast pace and multiple sonic events, all going on at once. Such songs showcase the SR7 for what it is, missing some of the details and being ever-so-slightly confused in playback, except getting the musicality delivered as well as the layers on events inside the stage!
In the past I have spent considerable length of time listening to Classical Music to which modern Soundtracks take elements of. But as a listener I have become bored with Classical, and consequently find OSTs much more fun; this song demonstrates the included ideas that get me going! This song starts out with an introduction of cellos but quickly progresses into bass at even 00:10 seconds. Violins also frame this opening out to the sides. It’s the quickness and correctness of this bass element that first gets our attention, yet both the naturalness and size (of it all) cause quite a stir here at Redcarmoose Labs. At just 00:17 seconds the first bass-drop takes place as a component of drums. Even here at the start we can very much start to understand the Hybrid methodology in action……the deep bass, the fastness of the treble additives being separated, and slightly disjointed in form. Each driver is doing its part to make the music both contrasty and complete…..that and as talked about earlier…….size! Probably my first learning experience with this particular IEM had to do with understanding its reaction to file quality. The SR7 will surprise you in offering a bigger stage than what was first encountered, but it is up to you to feed the SR7 correctly in order to realize this particular feature. Simply, I judged the soundstage abilities way too fast at the start. And truly that is probably the most rewarding thing about doing IEM reviews, when the IEM in question seems to surprise later-on with newly found abilities?
At 00:57 I can hear violins out in the distance continuing to introduce our main theme. And that is the magic of this particular music piece, that in a way it’s simple, yet the variations of theme playback seem almost endless? With 7 total drivers you can guess the SR7 is taking this all apart and offering it up for inspection. At 01:16 an ethereal chorus arrives, and I have chills. At 01:24 we can fully hear the bass alongside the chorus, yet it is very much in Hybrid fashion, giving us the full-experience and sending home once more why Hybrids are my very most favorite way to go. At 01:39 there are some higher pitched percussion elements, yet nothing is overly intense, but just on the border. And that single quality very much demonstrates what we have, being a big stage, deep lows and a very digestible and smooth midrange and treble, yet still getting us the contrasts and imaging we need to feel like we are getting 100%.
There is a single main question that I ask myself here. Could I live with this single SR7 IEM and have it be my only ear-phone? And at this young point, so early in the review, I have to say yes, yes I could easily live with this particular IEM, and not want anything else, it is that good……not perfect, but really, really good.
Probably the main attribute here takes place with how the bass is done, the quality is at first of course...........here in the music, they way it was mixed, how it was presented, but the next level takes place in how there is a visceral/fast and organic and deeply emotional aspect in SR7 bass replay……and additionally, that is probably why people went mad in the theater over this OST? But my humble Sony WM1A with the included SR7 cable and SR7 ear-phone brought this to life, and for that I’m grateful!

Lorne Balfe and Andrew Kawczynski
Grand Turismo OST
Follow Your Line
44.1 kHz - 24 bit
At 00:12 the music showcases a composite arraignment. Such layers of musical elements are the forte of the SR7. Here Lorne Balfe once again uses the whole stage yet inside of that stage we are gifted with layers of how each and every musical element interacts. At the start at 00:04 we are hearing the musical effect of a dramatic race engine as it performs the Doppler Effect as it passes.
Definition:
Compared to the emitted frequency, the received frequency is higher during the approach, identical at the instant of passing by, and lower during the recession.
At 00:13 the theme of the song starts right off, not wasting any time. This composite it seems has room for so many wonderful elements. Such is the landscape of the modern movie OST, utilizing the full (multi-track) ability of the modern recording studio, as in contrast to movies from the 1980s or 1930s. All the while a careful and sincere bass floats inside the mix, fully delineated and separate in placement. Such upper synthesizer chords are also doing a wonderful syncopated metronome starting at 00:13. Such sandwiching of chorus, bass elements as well as upper trebly noise additives make the mood here. We can hear the echoing of the chorus, yet the decay would be better with subtracting the BA devices. The BA double-edged sword, as we have to take the good with the bad, as BAs have faster take-offs, but also decay. This is just what we get……as a fully dissected and layered presentation…….with minimal echoes. This could also in-a-way be a style of Bach church music……lol…with a stretch of imagination. At 02:09 the music once again introduces its main, main musical theme…..almost like clockwork. At 02:20 the violins enter once again to show us a climax to the song, and while very “by-the-book”…………this type of music serves a purpose, as to be an accompaniment to the movie visuals.
Grand Turismo conclusion:
While not perfect, this album showed its share of quick and cheesy thrills, just the music was an event by itself and a testament to both the SR7 skills and modern musical recording developments. Does this single album delineate the SR7? It kinda does, in that we were given very technical bass replay, and way better than first thought when the SR7 arrived. Secondly we hear the attempt of BA reproduction to kind of offer a wide spectrum of playback tone and transients. While fast and well separated…..the SR7 is really trying to be all things in that we failed to hear any metallic BA timbre, a good thing, yet still there was no argument that at times we were introduced to slightly steely tones. Still, and I must repeat, still this is a value buy, in that there is a lot of entertainment here for the asking price. Also the SR7 seems to walk that perfect line of smoothness and crispness, that’s hard to do for a manufacturer. A quick change of the switches (to vocal setting) could enable a listener to hear the OST with a lower bass presence, except a big part of the fun is basking in the exquisite bass tone and technicalities!

DCD
Within The Realm Of A Dying Sun
Windfall
88.2 kHz - 24 bit
Here hopefully we can be introduced to a new side of the SR7? While this music is often related to soundtracks, it is still very different. At 00:00 we are quickly introduced to a downbeat….at drop that could just as easily end a song, as start one. When in fact after subsequent further listening this bass is the rhythm and pace provided…..and continuously used to drive us onward. Yet we are introduced to a basic rudimentary down-up, down-up in bass notes. Such movements are contrasted by keys here. At 00:24 we are given what sounds like a flute, only it’s a sample of a flute, as much of their instrumentation are samples in fact. Such sounds walk that path of digital reverbs and as such show a complex decay (reverberation) structure. This sound I have years long relationship with, having this album both on vinyl, CD (import and domestic) and HiRes……and the timbre sounds pretty much correct. And in so many ways the SR7 does this style of music intrinsically well. The controlled yet slightly bombastic bass, the fast attack and decays of the 6 BAs in action…..very much a digital, yet organic style of ear event. This music has its character always in digital reverbs and how they are introduced with the music. It seems the longer DCD progressed, the more elaborate their instrumentation and studio effects became. Often saving Lisa Gerrard’s vocals till later, maybe for dramatic effect? As in this example…….in that her voice (with this album) is very carefully used, in what could be heard as sparingly perfect? And I have to ask myself how an album that only has Lisa Gerrard’s vocals as an additive to the second-half could be my favorite? That answer is much like the SR7 response, in that it’s not what you introduce to music that’s always the magic, it is what you take away from the sound that is of true benefits.

A rush of wind and we are at the 01:09 area in the song. At 01:12 a new addition comes sonically as trebly percussive effects making us take notice. Here the separation (from the bass) takes on additional value……..Hybrid value once more. These effects travel from right to left, encased in digital reverberations. And it is in these times of subtraction that the stage unfolds itself for the SR7, seemingly areas of distance show once more that it isn’t always how complex you make the music, that simplicity contains genius. Finally we are given more information to identify our embellishments, the treble details are part of layered keys that also hold the pitter-pat of subtle piano notes. What sounded like percussion at the start revealed itself to not be true percussion. Of course that is what the piano is, a mixture of both a string instrument and percussive properties……only the confusion starts when such character becomes further effect laden abstracted. At 01:47 the wind sound is back with us…….at 02:00 a more real piano comes in. Finally the message is complete, the statement is whole. And no, no vocals were used in the song, none at all.
Song conclusion:
Here this song's simplicity gives way to a clearer perception of both the good and bad points of the SR7. As great layering took place there was an absence of finite imaging. This blurriness was and is still musical, while not as defined as 7 drivers would have you believe…..there was still an overall ambiance that seemed to go well with his style of music…..the bigness and separation at hand. Of course the big bass was still kept in check on the high setting, being (ever so) slightly on the uncontrollable side, and again more musical than factual.

DCD
Within The Realm Of A Dying Sun
Dawn Of The Iconoclast
88.2 kHz - 24 bit
Once again a beat starts us off at the 00:00 mark. Such lows somehow are both big but still contain definition, and are in no way a stupid thud. Though the quality of the bass often lends itself to hearing longer decays than possibly natural……yet still part of the program here. Because we can hear the attack of the bass, hear the middle and hear a different resonance to the end, but it is almost like layers of bass? When in fact it is layers of reverberation at hand, it is just the overall character of the bass driver enhances this. We are gifted with a fanfare of horns…..not real horns of course (samples of horns) very few sonic elements are real in this fantasy world. This introduced sense of grandeur and excitement is the telltale sign of our vocalist arriving. Yep, she made it.
Her vocals are not in English, but a channeling of accent tongues seemingly coming from another world, maybe not for our understanding? Maybe they are an ancient language, long forgotten? It’s important to note that this is an example of how the SR7 can be many things, but not all of them at once. Hence the switches which will enable the ear-phone to be specialized, if that’s your goal. As stated earlier the different variations are all enjoyable, fun and pleasant, it’s just if you wanted to hear Lisa Gerrard, with both switches up, she is slightly less forward. And that brings us to the most important question of the review………Is the SR7 complete in any one setting? I would have to say it is. That means that even though Lisa Gerrard’s voice is more stand-out-ish with the vocal setting of one down and two up, I’m perfectly fine hearing her in the both-up setting, and not needing to make a change. With that said I have obviously heard her more forward in stance than with the two-up setting.
Here’s the kicker:
Different from what I would normally do, I thought it would be fun to go into the vocal setting once more for the second half of the DCD Within The Realm Of A Dying Sun album. And sure enough, I was given a more forward stance of Lisa Gerrard’s vocals. The bass was subdued which opened up such pathways. I mean you don’t have to do this, as both ways to experience the SR7 are fine, and it may not be so genre dependent, as it could be tonal preferences in the end?


DUNU SA6, Sound Rhyme SR7 and to the right DUNU VULKAN
Comparisons:
Here I have chosen two other IEMs to find how the SR7 relates. Strangely, I have chosen two DUNU brand IEMs. One, because I have a long history with the SA6 and VULKAN, and Two, because many know about how good they are. And…….finally three, because I love them both, yet I love the VULKAN more.
DUNU SA6 IEM: $549.00
2 Sonion AcuPass Vented Dual BA Woofers
2 Knowles Custom BA Midrange units
2 Knowles Custom Dual BA Tweeter units
DUNU VULKAN IEM: $379.00
8 mm DD Structural Foam Cell Dome with Soft Independent Surround
8 mm DD Nano-crystalline Titanium-Coated Diaphragm
2 Knowles Mid-High Driver BA units
2 Knowles Dual Super-tweeter BA units
https://www.head-fi.org/showcase/dunu-vulkan.25887/reviews
https://www.head-fi.org/showcase/dunu-studio-sa6.24665/reviews#review-24391
The SA6 came out in September of 2020, it seems like yesterday, but truth to be told, it was a while ago, especially in IEM years. Since that time there have been buckets of improvements to our little hobby. Yet back then and for a few years the SA6 was the darling of reviewers and listeners alike. Really in so many ways it’s complete.......still I wish it was more thorough in bass response. Also soundstage (while good) isn’t the best, also just like the SR7 it suffers a tiny bit in imaging clarity.
SA6 v SR7
First-off I wanted to explain that I’m not picking on the SA6, except that the differences here can’t be taken any other way. Meaning the SR7 is such a clear and concise improvement, it’s not a factor of sound preferences. It’s just that this is a fast moving industry and the newer values obtained are real and solid. The stage of the SA6 once more shows its smaller size, but inside of that the SA6 holds an off tone, a color showing the BA elements. While sure the 9.2DD inside the SR7 is less controlled than 2 vented Sonion sub-BAs, its stage is bigger, but more than that….the SR7 bass is simply more visceral and real. While both IEMs in question show a balanced and relatively smooth treble, the SR7 is both more contrasty, vivid and most of all real in replay. In spite of its lack of finite imaging, it’s just better because that imaging is bigger and more involving……sorry to say! In many ways this comparison is not fair, as times have moved on…..it is what it is.

VULKAN v SR7
So the VULKAN is priced only $10.00 more. And I will stand firm that no-matter what the VULKAN is incredible for what it is. There were days when I would put away everything and give the VULKAN its time alone. Strangely musical despite breaking many of the rules in audio, it was this musicality that had me coming back for more and more. With the SA6 I used the same cable and ear-tips as the SR7, but now due to MMCX I used the included VULKAN cable in 4.4mm.
Well, the magic....the DUNU Magic hasn’t left, and I don’t expect it to any time soon? The VULKAN is a classic, to me anyway. And it turns out to be the perfect comparison subject. Why? Well first off the bass is way more controlled. Yep, sitting back wearing a sports coat and talking in a sophisticated manner, never out of control and never blurry or out of line. When DUNU placed two very different 8mm DDs inside they were showcasing their R&D, bringing a sample of the IEM art that was both rare and exotic. Then when you figure in price-to-sound-value…….well this IEM goes off the charts in a hurry. No wonder it is often recommended by me and a slew of other listeners. There is a personality to this bass which is more detailed inside the stage showcasing a separation, but more than that, an individualization of the style the bass instrument is to begin with. While the VULKAN is lightly lower in bass authority it can do tricks too, meaning there is less bass so it sits back easier to control in the end. The VULKAN bass has less physicality, but is spread out to the distance of the stage, hence still big. Now the thing is there is also this pace issue with the VULKAN bass, that in itself makes both bass replays birds of a feather. It's just both wide, yet sitting slightly further back in VULKAN replay……but still emphasized to the max. The VULKAN bass is less visceral, which starts to travel up and blend with the rest of the midrange and treble. Meaning those too are slightly less forward and of coming from father back both in vividness and stance. Yet this slight sleepiness is maybe resulting from a style of quietness of background. Because there is more separation, more itemization than the SR7, and 2X more separation than the SA6. Things are less confused than both the SR7 and SA6. Where there is still a slowness and awkward split-second behind feeling to the VUKKAN bass timing which I like, where the SR7 is more straightforward and regular to what you know. While the stage isn’t quite the same between the two IEMs, where the VULKAN is sitting back almost like a pair of speakers in presentation, that in-fact I can see the speakers out in-front in my mind's eye. The SR7 is more forward which in-turn adds to involvement and entertainment…..and this continues all the way up to the treble area where the VULKAN shows a slightly reserved sculpturing, the SR7 more active and spread out. The VULKAN is slightly more reserved and easy going in comparison. Though strangely this darkness in the vividness of the VULKAN doesn’t make it any less of an IEM, just different. It’s like the SR7 would be my 5 o’clock to 10 o’clock IEM and the VULKAN would take over from 10 o’clock till 2AM.

SR7 Conclusion:
To tell you the truth, the SR7 was slightly more real than the VULKAN, more correct in technicalities and where the VULKAN left items out, those vary items were filled in with the SR7. And the thing is with my talk of listening times during the night, you may think the SR7 is aggressive and forward? You normally can’t get this vibrance with an IEM with-out a little robust fall-out especially at $369.00……….and that’s what we have. Images of layers are projected (big) forward and back and from side to side, yet this all takes place in a slightly uncontrolled blurry manner. While the stage is enormous, way bigger than first guessed, it is not fully filled in with all the details as more expensive IEMs can show. This all boils down to two major attributes that make the Sound Rhyme SR7 totally special in my book. One) Timbre, that is one thing that may be improving with this new wave of IEMs, because I’m starting to really take amazement at the perfect timbre recently. Two) Musicality, the musicality is so strong with this one, that all other attributes can get overlooked. It’s that physicality in size of the musical note, that realism that transcends critical imaging.
With the above said, the human psyche being what it is, goes to the extreme with these attributes. When in reality the SR7 is truly a very careful and balanced player. Never too harsh up top, or too heavy in one attribute of playback…….a gentleman carrying poise and reserve. The SR7 brings much of the same tone to phone playback if you so choose. And despite any drawbacks listed, will scale up with your best equipment to a remarkable level………..levels before completely untouched for this kind of money. There are 4 sound modes that can dial the SR7 into whatever genre you have of choice, or any personal internal sound preference. While extras included may be limited, that aluminum case is the cat’s meow! Even though it’s only 5 grams in weight, the medical grade 3D printed construction provides many twists and curvy shell facets…….yet there is no denying it leans on the side of big in size. The nozzle ends are a work of art, and hold my preferred ear-tips on with-out fail. So much so that I never have to pay much attention to how they are placed each time before a listening session. The cable is both sonically and visually a work of art, and hard to surpass unless you want to spend an equal amount to what the IEM itself costs. Visually this SR7 looks 100 times better in person, up close and personal……..the opposite of those on-line dating sites. LOL
A swarm of bees:
This is my best way to describe the effect of multiple BAs, a swarm of bees. And while more BAs added to a set-up offers often bigger more engaging entertainment, they can show a downside. Such examples as the SR7 with a full 12 BAs in action means 12 small almost microscopic metal reeds are vibrating all at one time. Such effects even can emit an extra level of buzz despite the 3 band crossover and sound tube dampeners. Yet in this very SR7 application, the tuning lowers pretty much all of the metallic sheen often encountered with BAs, resulting in great overall tone and musicality with a slight blurry congestion. Does the DUNU SA6 suffer from this? You bet, the buzz also covers up finite separation and details. Does the VULKAN suffer this, no somehow the BAs in the VULKAN emit a clearer yet duller displacement of sound response. So it ends with a give and a take, where adding the energy of 6 BAs adds a level of stage size and immersion, yet generates a style of distortion which hinders our pin-point imaging. We are left with big layers of response except busy music like the Grand Turismo OST will show less detail inside of those big images and offer less detail than expected from 6BAs.

With all that said……..
Still:
This new Sound Rhyme SR7 addition to our little hobby (still) shows progression, a step into simply better sound value for the money. You come home and are looking for musical escape, and that my friends is what the SR7 is best at, a distraction though colorful correct sound replay, something that is not easy to accomplish at the going price of $369.00. It plays every genre I used, is easy to power and fits like a million, what else are you looking for? But most of all the SR7 somehow never got boring, never needed me to look for something better skilled or better tuned? And sure you can spend more money, heck you can easily double your money spent on a fancy new EST driver IEM……..or simply spend only $101.00 more and get the DTE500 from Sound Rhyme. But EST drivers are not always perfect either. When I heard this nice faint cymbal placement, way out to the side, and even though I knew it was BA created, I thought to myself, ESTs don’t reproduce cymbals exactly this way. This way was ever so slightly metallic, except the SR7 has such good tone that the cymbal was both separated and itemized in the most special of ways………holding what I thought was perfect timbre and enough detail to make me smitten with the SR7. Truly the SR7 is worthy of a full-five star score!
$369.00
https://penonaudio.com/sound-rhyme-sr7.html
Disclaimer:
I want to thank Penon/ISN Audio for the love and for the Sound Rhyme SR7 Universal IEM review sample.
Disclaimer:
These are one person's ideas and concepts, your results may vary.
Equipment Used:
Sony WM1A Walkman DAP MrWalkman Firmware 4.4mm
Sony TA-ZH1ES DAC/AMP Firmware 1.03
Electra Glide Audio Reference Glide-Reference Standard "Fatboy" Power Cord
Sony Walkman Cradle BCR-NWH10
AudioQuest Carbon USB
Samsung Phone 3.5mm

Like always, thank you!