Got mine - came a day early! Surprised I didn't have to pay anything. Only had a brief listen through my iPad, using YouTube and iTunes store samples (I don't put music on any of my iOS devices) as I had to go to work (on nights this week), so not particularly the best way to test. Will take some pics after I finish my shifts this week.
Not to sound like I'm just rehashing what Kunlun said but my first impression would be
balanced. I had a quick play with the vents and predictably I like the big ones haha - or even no plug at all, although that just feels rude (anyone listen to them this way?!) I wouldn't say they're bass heavy - I played a few things with varying degrees of bass in and it what was on the track was what I got. I did my usual "play Woofer Cooker and see how they handle that constant 20hz tone" and was delighted that rather than being aubible but somewhat buried in the track, it was there at the same level as everything else but without hogging the limelight.
The smoke faceplates make the purple left and blue right shells look more subtle when inserted which is what I wanted. They really do look lovely!
The fit is interesting (as I've never had customs bar the silicone sleeping plugs I had made from the impressions company). The sleeping plugs go a LOT deeper into my ear (the tip is noticablly longer), the seal is way more pressurised etc but given everything sounds 'right' and the stuff Kunlun said in
this post I conclude that this is all good. The seal breaks when I smile very wide but otherwise the fit feels about right on both sides (they're not slipping out or anything). I can see why silicone customs offer far more isolation, although the isolation from the MG6 Pros feels fine.
I imagine these are going to sound stellar with a better source and I'll be interested to see how they burn in. Got to pay these off then I can order my DX100. I imagine they should pair well with a lot of stuff though as being dynamics there's less funky impedance/sensitivity issues. I swear iOS devices just do not jive with the BA universals I've had for this reason.
Anyway, from the initial impressions I've had, I'm guessing that other than paying for new drivers as and when FS upgrade their flagship model, I'll be content in terms of IEMs for now, especially as there's my stereo rig, my home theater rig, a gaming PC to put together, room treatment, guitars and so on. Will post more when I've spent some quality time with them.