
Plugged my ODAC into a powered USB hub (from the original Rock Band), listening to some stuff... the highs are actually a bit fatiguing, sibilant at times. The DT880s have crisp highs but aren't piercing. I'm already feeling a bit apprehensive... I'll be burning these in tomorrow when I'm at work but I'm afraid I might not like their sound. They have good detail retrieval -- in fact, I think I've heard some stuff with these already that I haven't heard even with my DT880s, which I find hard to believe, but maybe they really are that good. I just wish I didn't feel like I have to EQ down the treble to make these enjoyable to listen to for longer than 30 minutes. I might have to stretch out the headband just a tad as well, as I feel they are a little tight. Not nearly as bad as my HD280s though.
Hmm looks like I'm having the same experience with you. I can't listen to the HE-400 for more than 30 minutes at a time too. Starts to hurt my ears if I go past the half hour mark.

@ evowei and yokken,
Please report the treble issue over to the Hifiman customer service thread, we need this recognized so they do something about it.
http://www.head-fi.org/t/629253/head-direct-hifiman-customer-service-team/60#post_8747549
Alright, will do. Now I'm in a dilemma: which one to return? :/




























