A large of the "change" in sound comes from your own interpretation, a "Brain-in" if you will.
Some headphones have a very noticeable change in signature after 100 hours, the AD900X however didn't with me.
The whole matter is really subjective to the owner, burn-in or brain-in.
I do enjoy the AD900X, but lately I've been listening to music with more emphasis in bass.
Ok ok. I get it now. You don't believe in burn-in and instead want to pretend it's just in people's heads. Let's not start that futile debate.
l know how it feels when you deal with people that want to deny that which is easy to perceive by observation. Fortunately, Yazen is not one of those. He was just describing what his ears noticed. The AD900X's sound did not change much to him, with use. Even if someone else's experience with the same model is different, it is nice to know that the opposite experience comes from firsthand personal observation and not unfounded reasoning.
Edited by Alberto01 - 4/29/13 at 6:04pm