I just purchased the PS1000 and I can tell you that the one that I purchased sounds different than the one I auditioned. The one I auditioned had an annoying peak and brightness that was driving me nuts. The one I purchased does not have that at all and sounded better out of the box.
The only factors could be (1) break-in vs. new phone, (2) I didn't have the extension cord when I auditioned, or (3) inconsistency from phone to phone. In any event, these are terrific headphones and I just can't tear myself away from them.
I am also breaking in a new amp but it was like I returned the demos to the store, came home with the new ones and had phones that were without question less bright.
Are these going to get brighter as they break in?
Edited by BlackstoneJD - 8/19/12 at 7:54pm