General Impressions
SR1a – Just an insane wow factor. The overall presentation is unlike any of the others, without a doubt. Definitely the winner in clarity.. tends to feel like a veil has been lifted when listening to them after the other headphones. This coupled with the really amazing soundstaging allows the sound to just kind of exist freely in a way that the headphone feels as if it disappears. Also for the most part (wish the music was slightly more in front of me vs. in your head), every part of the music feels like it’s exactly where it should be. The separation is just incredible. Also, detail and Imaging are on par with the other headphones, but not discernably better (outside of maybe the Susvara). Lastly, extremely, extremely good with acoustic, vocal heavy, high detail/complex passages without a lot of bass.
Tradeoffs:
- Less weight to the sound than the Susvara/TC/009, and certainly has the lightest bass of the three. Imho, these simply do not perform great with tracks with moderately heavy to heavy bass or with really low extension. And it’s not just quantity, I’m more so speaking quality. It’s almost as if it bottoms out at times and you lose some of the detail and clarity/tightness of the bass in comparison to the other headphones. (fyi the K1000, designed similarly, has the same issue)
- However, I believe a well powered speaker amp may help with this. The Woo WA33 as a pre definitely improves this to a good degree.. but at a slight decrease in transparency to my ears. Plan to explore in the future
- I don't listen to bass heavy music via headphones, I reserve that for speakers.. so for what I listen to it's almost a non-issue
- There’s one other tradeoff that’s worth mentioning, but it’s to be expected with the design. At times there’s slightly less intimacy and cohesion of the midrange—the 009/Susvara standout immediately in comparison here. I enjoy the SR1a’s presentation, but it also makes me appreciate conventional headphones. I wouldn’t own it without having the other.
Verdict: extremely good headphone, best in class with clarity and soundstaging. On the same playing field with every other headphone in every other aspect with the exception of bass. Very niche headphone, would only own as a compliment but certainly worth owning
009 – Great wow factor (big sound, very prominent midrange), but slightly behind the Sr1a and TC in that regard (openness, holographic nature). However, it has the best overall midrange and best vocals, with a slightly forward sound. It is very detailed, airy yet with decent weight to the sound. Very clear and sparkly highs (sometimes to a fault, see below). Whenever I go back to this headphone from any of the others, I’m literally impressed within the first five minutes. From the Sr1a and TC, more intimate midrange and vocals.. from the Susvara, more clarity and bigger wow factor. The 009 is the easiest to adjust from the Sr1a, which is a testament of it’s clarity.. but even still it sounds slightly less clear than it. As far as bass, it’s really good and solid, but again with slightly less quantity and impact than with the Susvara. That said it’s definitely a step above the HE60, Sr1a, HD800, etc that are more so bass light (that is not a dig, I define bass light in relation to most other cans). Highs can get screechy at times, especially on poorly recorded tracks—easily it’s weakness that stands out. Generally, this still stands out as my main, top all-rounder. I do have to say though, the Sr1a and 009 are a bit redundant given what they do best. I would pick the 009 over the Sr1a overall if I had to, but that’s just straight up between the two. If I could only keep 3 out of these four, it would be really, really hard to decide between the 009 and Sr1a—right now they are my two overall favorites. But one of them would probably go.
Tradeoffs:
- The highs can be offensive at times. It’s not a huge problem for me but on the wrong recording or genre it can be really tough. 90% of the time it’s not an issue, but the 10% can pause you right in your tracks. It is the one flaw the 009 has in my opinion and for people that are extremely sensitive to sparkly highs, this probably won’t be your favorite or a headphone for you. (fyi, I also think the combo of the Dave + BHSE exaggerates this, would expect a combo of say the Bartok/T2 etc to fair better, but not eliminate it)
Verdict: one of the absolute best I've heard and definitely the epitome of what Stax represents.. for many this will be extremely hard to beat by anything and for some others it won't wow as much.
Susvara - very good at everything, but just one small step away from “wow’ing”in a single category (only in comparison to these* headphones). Really smooth tonality, neutral with a slight hint of warmth. That plus the comfort makes it easy to listen to them for hours on end. Also, great detail, excellent dynamics.. slightly smaller soundstage but sufficient, and with really good bass. This headphone reminds me of the Sennheiser HD650, just with a far higher level of performance. Remember the HD650 craze? People went nuts for it and it lasted for years lol.. It was a headphone that didn’t wow in any one specific category imo, but did everything so well that people were mesmerized by its overall balance. Also somewhat similar tonality wise.. that’s essentially the Susvara as a much better, TOTL can. Lastly, I want to come back to the bass, as it’s really, really good.. perfect quantity, very tight and articulate and good impact. It has slightly more bass and slightly more impact than the 009, and it feels just right. In fact, I wish the 009 had its bass. I only have the TC as slightly better overall bass wise..
Tradeoffs:
- For me, it just doesn’t have a single or collective wow factor. Every other headphone owns one area that it “wows” in. TC? Bass and holographic realism. Sr1a? Clarity & presentation. 009? Midrange and Vocals. (However, again, every other headphone has more of a larger flaw while the Susvara does not, or at least not to the same glaring degree--so that IS its wow factor, although more passive so to speak).
- Soundstage is just a little more closed in than the other 3, but not a major issue at all
Verdict: the best all rounder of the group for sure. If I could only own one headphone truly, it would be this or the 009.. but probably it because of the better tonal balance. If pure technical ability and wow factor are main priorities, the other 3 are just slightly better imo.
Abyss TC: The TC is a really amazing headphone. It has a wow factor that's right there with the Sr1a. It has the detail, speed and clarity of an e-stat, but with spaciousness and a lower end that only a few headphones I've ever heard can rival (namely the ATH-L3000 and probably the Grado PS-1 but it's been so long since I've had it). When you think about it, it's a really well balanced headphone given this combination. I believe the TC does imaging better than any other headphone, it really impresses me repeatedly. The width and depth of the soundstage specifically also really stand out, and to my ears is a bit better than the HD800 that is revered so much in this regard. I would only amend one statement from my original impressions I provided--I said it was more bodied than the 009, which in some cases is still true, but there is a very real (but slight) recession in the mids and upper mids, which does cause the midrange to not sound as full bodied or having as much presence as the 009 or Susvara. Over time this became more apparent and is the one flaw it has--but I've mentioned this before, slightly turning up the volume remedies this almost entirely.
Tradeoffs:
- Midrange recession - as mentioned, for me this is pretty big as the midrange is most important to me. It can sound a bit hollow at times and definitely has the least impressive vocals of the group specifically for this reason. But again, this can be remedied with volume--not saying that excuses it entirely, because that's not good for the ears and certainly it's not a headphone I use for low level listening
- Tonality - very small issue if one at all, but at times the TC can feel a tad cold. Could probably use just a hair of warmth, but not really an issue for me. For perspective, I would call the Sr1a the most neutral, followed by the 009 and then the Susvara being a touch warm. TC might be a touch colder than the 009/Sr1a and definitely a bit in comparison to the Susvara.
- Like the 009, the highs are sometimes* a bit of a problem.. but I believe slightly less of a problem than with the 009.