Just met yuheng for COD. Got chance to try his new amp too, good stuff.

Burning in with modded Chaintech AV710 and PRv2. Initial impression: mid-bass abit bloated, but am comparing to my HD580. Still hope it'll tighten up soon. Overall very impressive, highs sharply rendered.

Update: less bloated after changing opamps to OPA2107

My first IEM. For RM170 you can't go wrong.