One thing I don't like about the T1 is that they are very picky of their position in your head. If the cups move forward (toward your face) the sound gets darker, if they move back then they get sharper and if the move around a little bit the soundstage balance totally moves.
Wow - this is really true, I hadn't picked up on it before. Moved the T1 forward and they do sound darker! Thanks for the tip off