Initial thoughts
Fit, finish, and wearing:
They're super screwing well made. They're a joy to look at and handle. I'm already happy I bought them, just to handle such a well made piece of gear. The fit is highly adjustable and can really be dialed in. The suspension strap makes them very comfortable and ready for marathon head-time sessions.
Sound:
The bass roll off on the FR graphs isn't accurate. All the armchair warriors out there harping on them because of some graphs they've seen need to get their crap together. Go listen to a set. These have a very well endowed low end and have no trouble reproducing EDM or rock in very satisfying ways. I've also cycled through classical and Japanese TAIKO drums, very pleasing. The bass seems to have an almost tangible presence to it, makes the headphones almost addictive to listen to.
I'm still warming up to the signature. The soundstage isn't cavernous, which unfortunately is what I like, but we'll see how they break in on my portable setup. I've got some hum/hiss in the GO1000 right now and that's certainly negatively affecting the sound, but I can't tell in what ways and to what degrees. Anyway, vocals seem alright, but nothing special so far. Instruments though, whatever combination, sound fantastic. I almost hate to hear people coming in on the vocals. I'm also hearing things in tracks that I haven't before, for whatever that's worth.
That's all I've got so far. Replacing the hissing DAC+amp is the first step, then more listening. I'll be letting these burn in for ~800 hours before I start getting serious about what I think about them. Unfortunately my home gear, and gear I trust not to blow these up, is at home. It'll be a month before I get back to that and another month before I get them adequately burned in. Serious listening and thoughts is several months off now.
Cable->headphone Connectors:
I can't say I'm a fan of the MMCX connectors. They seem alright, but not something I'd have wanted for a full size headphone. If the idea was to add the ability for replaceable/aftermarket cables, then why did they use a friction based, micro sized connector? Hirose(MrSpeakers) or mini-XLR(Audeze) should have been what they went with. Or even a larger friction connector like the HD800. If I decide to keep them and I finalize my modular cable system soon, I'll be replacing the jacks with mini-XLR connectors and using mini-XLR cables.