Yes it supports optical out, the combined 3.5 mm jack. I can see the red light as well, but why can't I get 192khz in the sound/midi settings, the highest option is 96khz, 24bit 2-channel stereo and I don't find the Rega Dac as an option..
Does the toslink only work oneway, and USB should detect the Dac in the list?
Does the toslink only work oneway, and USB should detect the Dac in the list?