Originally Posted by afrogt
Yamaha RX-V573 doesn't have multichannel inputs at all.
What devices are you trying to connect via HDMI1 and AV1?
Thanks, I was having a hard time confirming that. I saw an option for "AV Sound" but I believe that is if I want to feed HDMI video and a separate AV audio, whilst disabling HDMI audio.
Was trying to use a musical keyboard alongside my HDMI devices (PC, PS3).