I'm fairly recently collecting SACD, particularly multi-ch. I think the sound quality is hard to compare to other mix/masters, tho, as the provenance often simply isn't there. I do use hdmi altho I also have analog capability (Oppo 203-Denon 4520). I also use a variety of other Sony bluray players (S5100, S6700) via hdmi in other rooms with other avrs (Onkyo RC370 and Denon 3808) without issue.
FWIW calling customer service for something like this usually isn't nearly as good as simply using the manual for the avr/bluray player.....