Surprise! Surprise! The new 3.2 firmware sound different again! (as compare to the test beta 3.00EX)
The overall sound becomes cleaner. I can hear better separation, better tighter bass (some said lesser/lighter bass), less muddy, more airy sound signature.
On my Dunu DN2000, listening to Linda Ronstadt, Mary Black's No Frontier, Norah Jones' Don't know why, Eagles' Hell Freezes Over, Keb Mo...they just sound about right and more musical!
However, ymmv (as on my TDK BA200, it is now less musical as it sounds 'thinner').
Hm I'm feeling that way too after just upgrading. Definitely much brighter now, and also abit 'airier', even to my flat M40x. Had to crank up the bass to +3-6 from +1 tho. And also sounds abit 'thinner'.. Then again the sound from my cans have always been abit on the thin side. Would be great to have an equaliser to bump up the mids. XD