For LPCM yes. Dolby Digital and DTS can still do 5.1 lossy.Good points thx. I’ve got a 5.1 setup myself and old AVR does ARC (not eARC) neither does it do Atmos. I’m hanging out for HDMI 2.1 AVR with Atmos etc when they start dropping. But I think I’m limited to 2.0 sound via the TOSLINK period, right?