Gents...the sound examples are the same...suppose to have a better grand piano, aftertouch and has drawbars with leakage...i for one would be interested...I have 2 pa600's - i might trade up for the 900...it would have to be a bigger difference than what i'm hearing from the current demo's...i have been very satisfied with the 600's along with my yamaha psr s910 and mox8...i guess we'll have to wait until sept.

Steve