Yamaha RX-V3300, use zone 1 to drive home theater speakers. Zone 2 outputs to series of amps to drive home and deck speakers. Some signal sources sound fine on both zones. However when we use our sony dvd player to play cds some older discs sound fine on both zones, but others; Norah Jones for example sounds distorted, tinny on zone 2 speakers. Curious if others have noticed distortion on zone 2 not evident on zone 1.