
Disclaimer
I'm not a professional reviewer nor writer! Just a hobbyist. Eric was kind enough to loan me a Sonnet of Adam (SOA) in exchange for my honest opinion. I have since sent it back to him. I also want to clarify that due to the nature of the cable I primarily used for comparison, this is less of a formal review and moreso a compilation of my impressions during personal use, with fewer attempts at objectivity.
As with all audio impressions, everything written is entirely subjective to how I experienced it, no matter how objective I am trying to be. As far as the cable controversy goes, I trust my ears. If you don't trust my ears, then I don't know why you're still reading this. The differences described are not night and day, but rather subtle changes that are being scrutinised for the purpose of sharing these impressions.
Introduction
SOA is Eletech's latest co-flagship offering, sharing that status with the Ode to Laura (OTL) with an MSRP of 2,799 USD. SOA is composed of an ambitious combination of Gold Plated Silver, Gold Plated Copper, and Gold Silver Alloy. The rest of the specs for SOA are easily available to find on Eletech's website, so please go ahead and check it out.
I'm not much of an unboxing guy, but Eletech never fails to deliver on that front, you can see for yourself in the lovely photos, courtesy of @riverground. Unboxing the SOA is truly an experience befitting that of a luxury product. If I had to nitpick, I think the green leather used for the circular carrying case does not match the thematic design of the SOA, but it is a beautiful and premium addition nonetheless.




Ergonomics
The SOA is easily one of the most ergonomic TOTL cables on the market. It beats the OTL in that regard, and most certainly beats the PW Audio’s First Times Shielding and Brise Audio YATONO 8wire Ultimate. The SOA is light, supple, flexible, and free of microphonics. It is extremely satisfying to handle and looks beautiful, whether you're looking at the wire or the custom CNC'd hardware. There is a built-in chin slider as well, which, I'm happy to report, works perfectly. While I didn't dare, there is no doubt that you could comfortably take this with you on the go. Seriously, this is one of, if not the most beautiful cable I’ve ever used.

Sound
The following general sound impressions were done with a CIEM Aroma Jewel. The sources used were the RME ADI-2 DAC FS and AK SR25 (MK1). I also swapped between the two cables without taking Jewel out of my ears. This combined with the CIEM fit means that there was minimal variation in the position and seal of the IEM. Further comparisons with other IEMs and cables can be found in the next session.
The Eletech Victoria is my everyday pairing with the Jewel, which is an extremely warm and rich sounding cable, so please keep that in mind when reading the following impressions on the SOA. This isn’t a fair comparison because these two cables aim to do different things. SOA is a no compromise, detail and resolution oriented specialist that is presented in a mostly neutral-warm tone. On the other hand, the Victoria is a mid-tier cable, presented as lush and warm sounding, sacrificing the minute details for its analog tonality. If I had to exaggerate, imagine a properly treated studio vs a live music venue.
So why did I choose the Victoria as my primary cable for comparison when I know they’re not comparable? The reason is simple; it’s the sound that I’m most familiar with.
Lows
Let’s get this out of the way; if you are looking for a cable to increase bass quantity, you’re probably in the wrong place. I’d recommend you check out the OTL or something in the traditional copper flavour instead. However if you are looking to improve bass quality, then you’re in luck.
SOA provides clarity and speed to the lower frequencies. As a result, this gives the impression that the quantity is being reduced when compared to Victoria. However, based on my testing with other cables, the SOA doesn’t actually reduce quantity, rather it enhances without necessarily boosting the lower frequencies. There is no lack of extension; it rumbles very clearly, but in exchange for this clarity, the notes are easier to hear and relatively harder to feel. For example, I love being able to hear the detail of a bass guitar; the nuance of the string being plucked, strummed or slapped, the frequencies related to the harmonics, and the unique tone of the guitar itself. With the Victoria I can get a overwhelmed by the sensation, whereas with the SOA, all of this becomes very clear to hear.
SOA’s kicks and punches tight and fast on the attack with a generous amount of air, but a is bit quicker on the decay. I especially love being able to hear the details from in between the attack to the tailend of the decay in between hits on a snare drum. This is in contrast to the Victoria who hits you hard on the attack and decays slower. I’m also happy to confirm that SOA is great for cleaning up bloat and muddiness when transitioning into the lower mids, something I am very allergic to.
The SOA’s bass is more centred and not as wide as the Victoria’s, meaning that you do lose that sensation of fullness in the lower frequencies, resulting in the SOA sounding colder in comparison. Again, in my testing with other cables, I found that in reality, SOA is actually quite neutral, and its technical capabilities shine here as I get a more three-dimensional presentation, with more depth in the percussion.
To reiterate, the SOA provides a wonderful bass response, it just really depends on what you’re after. At the end of the day, it’s always gonna be about the synergy with the monitor you choose to pair it with. I would say that the SOA did not synergise as well with the Jewel with regards to the bass, but that’s because Jewel’s bass is already quite detailed and more relaxed to begin with, and I’ve gotten used to the thicker bass notes from the Victoria.
Mids
With regards to tonality, the SOA sounds very organic in the midrange, but if you're used to or looking for a warmer, thicker sound, then perhaps the SOA will lean towards sounding digital to you. Like with the bass, the mids sound neutral with a tasteful boost, a perfect amount of warmth and smoothness to not sound clinical despite having top class clarity.
SOA provides a massive boost to air and space with a hint of sparkle that never sounds too rough or sharp. Positionally, vocals sound a little lower on the y-axis with Victoria, like in the mouth, while on the SOA it’s a little closer to the nose and eyes. SOA has more depth, so while vocals don’t necessarily sound more forward compared to the Victoria, a choir, for example, actually sounds like they’re standing in a semi-circle rather than a straight line, and it’s very clear where everyone is positioned. While testing with live vocal performances, it did become a little less immersive with the SOA as it provided additional clarity and resolution.
All sorts of instruments and sounds pop out when called upon, and the background is black to the point where you can hone in on any particular sound while the presentation remains whole and coherent. Pianos, strings and guitars extend wide beyond the ear with a good sense of height as well. Timbre sounds more correct to me with the SOA as all the guitar tones I’m familiar with are full of detail with the perfect ratio of sweetness and crunch; plenty of energy to balance out the added airiness.
Highs
I really liked the boosted yet refined treble from the Aeneid, so I was expecting the same from the SOA. Suffice to say, it delivered in spades and is worthy as somewhat of a successor. Part of the sparkle and energy found in the upper mids is also present in SOA's treble, without a hint of sibilance to my ears. Keep in mind Jewel does have quite the treble dip, but from my other testing, I have concluded that SOA’s treble extends very smoothly.
I consistently found cymbals, for example, to be a bit too splashy with the Victoria, but with the SOA I find that they are brought closer without sounding harsh at all. It’s sweet and airy, almost giving me a happy tingling sensation with the perfect amount of decay. Like with the bass percussion, I can clearly hear the harmonics and details in between hits where the attack and decay overlap. I don’t think I’ve ever paid this much attention to the tone and decay of high-hats before putting on the SOA, but now, I’m more than happy to. Similarly, violins and violas are so airy and neatly separated that I can almost pick out individual players in an ensemble. However the tradeoff is that these string sections sound a little less dense compared to the Victoria.
If you’re allergic to sibilance, I think the SOA would do wonders for you on a monitor that’s just on the edge of being too much to bear. It does give a slight boost in energy, but I think it’s smoothed out very well. I did not find the SOA to be harsh or fatiguing in any way during my testing.
Technicalities
When I think of the most technical IEM cables, my mind typically wanders to Brise or PW Audio, cables with a bunch of stiff shielding that are on the opposite end of the spectrum regarding ergonomics. SOA has absolutely none of those physical issues while maintaining TOTL levels of technicality. I may have mentioned these details here and there in the previous sections, but I’ll compile all my thoughts here as well.
SOA’s positioning and layering is top notch. Whether it’s vocals, strings, brass, synths, percussion, everything is separated in a way that you can pinpoint any sound, yet the music itself remains as one coherent piece. This cable allowed Jewel to tackle busy electronic and orchestral tracks with ease. This is thanks to the enhanced perception of air and space, providing excellent separation as well as soundstage extension along all axes, especially in width and depth. It presents music in a way that wraps the sound all around you; as close to an out of head experience as you can get with IEMs. Dynamics are fantastic as well; piano notes accurately pop in and out while contrasting against the black background and each note's own sustain and decay. All the nuance and details of any given track is presented in a way that isn’t shoved into your face, but there if you desire to hear it.
Comparison
Comparative listening was done with a CIEM Aroma Jewel, UIEM FiR XE6, and CIEM Empire Ears Valkyrie Mk1. The sources used were RME ADI-2 DAC FS and AK SR25 Mk1. SOA was compared to OTL and PW Audio First Times Shielding (FTS).
Big shoutout to @MRT-Man for letting me borrow his XE6, FTS, and OTL.
Fir Audio XE6 - OTL vs SOA
Do keep in mind that I do not personally enjoy the XE6 due to how the lower mids interact with the mid bass. I found it to be listenable with SOA which is quite an achievement.
XE6 with OTL is less capable in its ability to separate a busy track. Bass sounds like it’s underwater, vocals sound veiled, cymbals are pretty centred and recessed. Plenty of air in the bass but not the level of detail I want to hear because I’m distracted by other instruments that want to draw my attention away. While this is a very biased generalisation, I will say that on certain tracks, the OTL enhances this monitor with a very nice vocal balance and a strong sense of warmth and immersion that is unique to the XE6.
XE6 with SOA has better precision in its separation, allowing me to hear a specific instrument if I want to focus in on it. Bass sounds closer to how I experience a live concert, so still boomy and resounding but with a bit more clarity and tightness. I can actually distinguish the pitch of alternating hits due to the faster and cleaner decay, while basslines pulsate with great dynamics. Vocals sound less rich but are more neutral and clear. The SOA provides more air in the upper frequencies and really boosts the resolution of this monitor. You could argue that these tweaks kill the soul of the XE6’s tuning, but for me I much prefer this pairing.
Empire Ears Valkyrie Mk1 - OTL vs FTS vs SOA
I think a lot of people haven’t heard the Valkyrie Mk1 but it’s a fun v-shaped monitor with a lot of upper mid presence.
Valkyrie with the OTL is once again less capable in its coherency on a busy track. Bass detail is very good, rumbling extends deep and can be felt and heard very wide. There is plenty of air in the lower frequencies, it sounds and feels heavy while maintaining a good level of resolution. Good impact on both snares and kicks which sound and feel very clear. Valkyrie's upper mids don't pair super great with the OTL but nothing I couldn't handle.
Valkyrie with the FTS is very clean overall but loses out on bass texture and punchiness. Bass rumble doesn’t have as much of that tingly feeling, nor does it stretch particularly deep or wide, and in fact is almost boomy. Kicks are a bit weaker, like it’s spitting, while snares sound a bit recessed and plasticky. This is all very unfortunate for the FTS because it’s perfectly capable, but when compared to the OTL or SOA, it feels a little underwhelming with this particular pairing.
Valkyrie with the SOA is the cleanest, just slightly beating out the FTS in my opinion. The texture is about the same as the FTS, if not a little less in quantity, maintaining a decent amount of punchiness and great clarity in its snares and kicks. Kicks are a bit round and decay quite quickly. Rumble is up front but doesn’t go particularly wide, it’s easier to hear the sub bass than it is to feel it when compared to OTL. Great dynamics on the bass with SOA though. The real highlight for me is the treble with this pairing as it smooths out those peaks in the Valkyrie's upper frequencies, retaining its energetic signature but taming some of the harshness.

Aroma Audio Jewel - OTL vs SOA
I did write the entire sound portion with the Jewel but I primarily used the Victoria for comparison. Here, we have a more reasonable head-to-head. I’d say the OTL has great air and detail in the lower frequencies while the SOA is more balanced across the whole range. I had some inconsistencies with the vocal presentation between the OTL and the SOA where I found that the OTL would bring forward vocals in certain tracks and sound a little further back in others. With the SOA I found vocals to be consistently brought forward.
Jewel with the OTL gives me almost a bouncy sensation. Bass guitars are very clear and well defined in their tone, while kicks and snares are very poppy, with a great amount of air and decay. Vocals do end up a bit coloured and smoothed out in the mix, but maintain an acceptable level of detail and clarity. Upper frequencies are more aggressive in comparison to the SOA’s refinement, making the OTL more energetic up top at the sacrifice of balance. For example, I found that electric guitar and cymbals were consistently more pronounced and very full sounding.
Jewel with the SOA feels less “bouncy” and more spacious. You certainly still get that level of excitement and fun when it’s called for, but SOA excels in its overall resolution. I actually think the SOA might extend lower despite having less overall quantity of sub bass. Snares and kicks are a little more dull in comparison due to the rounder attack and faster decay, but still have excellent impact. Vocals are consistently forward while remaining mostly neutral in tonality so it’s not necessarily rich or intimate. There’s no harshness in vocals but isn’t as smoothed out as I found on the OTL. Non-vocal instruments are balanced with no particular sound being more in-focus than another. This can give the sense that certain instruments aren’t filling enough space, especially since SOA’s staging also goes wider and deeper.
Conclusion
Not much more for me to say, perhaps this is an appropriate time for a round of applause as Eric and his team nailed it once again. SOA might not max out on any particular sonic quality in this age of cable offerings, but it's a complete package. The SOA radiates luxury, beating out the competing flagships on practicality and still delivering a TOTL listening experience. Having tried to many different flagship cables, I found this to be a rare and impressive feat. And while sound is ultimately up to IEM synergy and personal preference, the SOA is worth a listen for anyone looking to enhance the natural characteristics of their IEM in order to take it to the next level.