A few random comments:
-- Loved the very austere, no-nonsense 334 packaging. You only get what you really need.
-- The 334 comes with what I regard as the best, most appropriate carrying case for an item of this nature, a 1010 Pelican case. By contrast, my Westone ES3X came in a fairly large and impractical Pelican case. 3.5 years ago, soon after I got my ES3X, I bought the very same case (same colour even) that comes with the 334s. I use my other 1010 case for my K3003s these days.
-- The cable on the 334s is indeed microphonic and lacks flexibility, BUT build quality is simply superb and made to last many years. The headphone jack is simply the best I've ever come across. Although a Westone-type cable is a lot less microphonic and way more flexible, you can tell the 334 cable is much more expensive, and of (much) better quality
-- The housings, as noted by several people already, are very large, though not as large as those on my ES3X. They do stick out quite a bit, but not horribly so. BUT, if aesthetics is important to you, the 334s will not get you a hot date, unless that hot date happens to be a geek.
-- The 334s isolate very, very well. I think the larger housings may also help get slightly more isolation than I get with my 111s, which isolate very well already.
-- These IEMs are more comfortable than I thought. Judging by all the photos I'd seen online, I always wondered just how comfortable the 334s would be. They are indeed very comfortable. I think I have fairly average-sized ears, ie not too big or too small. I'm using the exact same tips I've been using with my 111s, the stock medium single flange tips.
-- Workmanship, as is the case with the 111s, is absolutely superb -- attention to detail is to be found in every aspect of this IEM.
-- The 334s are very, very easily driven.
-- Low volume listening --even at the lowest setting on my 4G Touch (1 out of 16)-- is excellent on the 334s. Hats off to FitEar in that department.
-- Having spent more time with the 334s, I can say that SQ-wise they are an exceptional IEM. These IEMs have been wonderfully, carefully and masterfully tuned.
-- Although I don't quite agree with a couple of people's claims that the 334s are very wide and open-sounding, they certainly do not sound that much in-your-head -- this, as is often the case, is very recording-dependent. However, detail retrieval and imaging are indeed excellent, and this helps make the whole presentation (still coming from your head) sound very, very appealing, and not 'severely' boxed-in. Please note I often find claims of a very wide soundstage and 3D type descriptions to be quite exaggerated. That said, for a multi-BA IEM, I've not heard one that comes close to the 334. Note I said "multi-BA" because I find the single-BA based FI-BA-SS to be in a class of its own.
-- Instrument realism, ie tone or timbre is, for the most part, very impressive, and certainly one of the 334's strong suits. However, I've yet to hear an IEM that renders low frequencies with the quality, refinement and realism of the one and only EX1000. The K3003 often comes close to the EX1000, and sometimes matches it, but the EX1000 is quite unique in that particular area. The FI-BA-SS also gets close to the Sonys. But, the 334's bass is very, VERY competent. At this level of refinement things may seem worse/better than they may seem from my descriptions.
-- The 334s may have the best mids & treble combined, ie perhaps not the best treble alone, and not the best mids alone, but the best when both combined -- absolutely remarkable balance.
Edited by music_4321 - 8/14/12 at 11:19am