I’m about to move and the 8802 is the heart of the new system that I’ll be setting up there. I haven’t set it up yet (its still in the box), but that’s why I’m asking questions here in anticipation of getting it up and running. In my current house, I’m two-channel only. But I do have an OppoDigital 105D that has an HDMI input and works as a multi-channel DAC through that input, and it does accept multi-channel audio over HDMI from my Mac Mini. I didn’t have to do anything special to make that happen because HDMI just showed up as an output in the “connected to Core” section of Audio Setup in Roon. I did have to switch it to Exclusive Mode however. So I just assumed that it would work with the 8802 also, but it would be good to get confirmation of that.