Thanks guys, yes I saw that it was analog audio in the manual. I did attempt using the RCA output to my AVR before posting this and again after it was pointed out here, but yet we still have no sound. Learning that it only supports 2-channel I think this is less of an issue for me now and using the OPPO USB DAC will not be a good solution here. Still don’t understand why I get no sound through the RCA output from the OPPO, will play around, probably missing something simple.