I've had alpha 5 on my main unit for a couple of days now and i think something is seriously wrong. Everything sounds hollow/out-of-phase/weird... It sounded perfectly good on v2. I did fiddle with the stereo enhancement feature, that is, I tried to enable it but it wouldn't go on. Could it be that it's actually now stuck in the 'on' mode? Other than that, a few reboots to report.