I've owned my Yamaha RX-V461 amp for about 7yrs with it connected to Mordaunt Short Avant Premiere 5.1 speakers, with the fronts upgraded to Mordaunt Short 902i's. I've always felt:- a) The music playback has been a bit lacking. A bit lifeless. My old (fairly cheap) stereo I'd say sounds nicer for example. b) The center vocal audio isn't quite as clear/loud as I'd like, even though I've tried addressing it. I'm wondering if I upgrade to a Sony STR-DN850 I stand a chance of at least improving the music playback? Or is this just the way AV amps sound compared to dedicated stereo units (even cheap ones) so I'd be wasting my time/money? Thanks for any insight/help! ps: I know some people think bi-wiring/amping is a waste of time with these sort of amps, but the 902i speaks do permit it, and the Sony 850 supports it!