I realize speakers have a break-in period, especially, after replacing speaker surrounds, but I didn't expect to break-in a pair of headphones.
Nando.
Some people say they need to break in, some say they don't.
I'm just inbetween I guess, I've never noticed headphones changed drasticly in sound after a longer period of use.
I actually believe in two kinds of break-in, the mechanical break-in that occurs in the cans and the mental break-in that happens in the brain.
Sounds silly I know, but I truly believe in the psycho acoustical phenomenon of the brain adapting to the EQ of particular headphones over time.
Adapting for the better sometimes and vice verse ...