I will tell you one thing. These T90 Beyer's are sounding insanely good tonight on my Marantz gear.. Straight up with no amp needed.. Wow. If there are better phones out there, I will be super impressed... I do have to return these but when Amazon gets them in I will reorder if the HE 400 aren't as good or better..
Guess my Bellari really is that bad too.