I find these hard to review. I'm a bit new to high end audio, and some of the specific terminology still escapes me, so bear with me. The other headphones/IEMs I've been listening to lately are Koss KSC75, Takstar Pro82, Senheiser 58x, Grado SR80, and Tin T2, to give an idea what I'm comparing to.
First off...the sound signature that you get from these varies widely based on how you have them in your ear. Fordward/backward tilt, front back rotation, depth of insertion....these all have an impact. And sadly, they don't necessarily stay the way I want them.
I've tried the large, medium, and small hooks. I don't really see much difference in the fit from the large and medium, but the small are uncomfortable on me. The large are a bit annoying due to the way they sit on my ear where they cross the earpieces of my glasses.
For some reason I gt pain inside of my right ear where it contacts the ear canal unless it's adjusted perfectly. My right ear might be smaller than my left (no I'm not Zeos).
You know how with most cheaper on ear headphones (like PortaPros and other things of that form factor) if you push them closer to your head you get more bass? These have that going on. You get more bass the further they insert into your ears. When they are in all the way, they have a pretty impressive amount, though they tend to slowly migrate out a little bit from that point.
The treble is a bit elevated. Not enough to cause discomfort, but these are definitely more treble heavy than anything else I have except maybe the Grados. They give very good detail, and the imaging is very good as well.
The design is just...nice. I just find them very aesthetically appealing, for what that's worth (not much, for me). The carrying case is pretty convenient, but if there's a way to wrap the cord so that it's an even length I haven't figured it out yet).
I have a feeling that if my ear shape was just a little bit different, these could become a favorite....however, for now I tend to prefer my Tin T2s for general listening. These give a sound that I like a bit better if they are perfectly adjusted, but they do require near-constant fiddling to maintain the sound that I want--maybe every 45 seconds or so I just push them back in or rotate them a bit. But when I can actually get them adjusted just right, they sound *really* good.
I wish they had a detachable cable, but that's not something I see happening.