A couple of comments after having the IEMs for 4 days. Out of the box, really nice packaging and accessories. The IEMs themselves feel very light, and I'm not sure how I feel about that. I don't want to break them, but the way the "beetle" design fits in the ear combined with the light weight means that I barely know they are in my ears.
My first reaction out of the box was "Wow" and not in a good way. They were extremely mid-heavy and the very limited bass was very blurry and muffled. I let them run for 2 days to break them in and there has been a noticeable improvement. They still aren't bass heavy (didn't expect them to be) but it has come into its own. Incredibly clear sound. Very detailed. I must say I don't own any other headphones that seem so susceptible to source. The quality of the recording and the player/DAC seem to make a HUGE difference. Listening to Rae Morris - Someone Out There in 24-bit FLAC on my Hidizs AP200 DAP or my MIYO DAC it gives me chills.
RyCanAny issue on the mmcx connection freely rotating ? Mine easily comes out of place and rotates. The small nib thats supposed to "hold" the connection seems already worn out...even out of the box. I feel that i need to baby it...doesnt give me confidence that it will last. Like you said...feels like im breaking it..