Hi. I bought Sony STR-DH790, sony speakers 5.1.2; but this is just 2 channel question (well, some "Spatial" question too).
I have hooked up: 1) Apple TV 4K via HDMI "8k" cable; 2) a PC via HDMI "1.4" port; 3) a Mac Mini [circa 2014] with OPTICAL from digital headphones out to OPTICAL in of...