Thanks, so I remember right, I did have 5.1 DD+ capability using just ARC. I know on the minidsp community forum, there seem to be misleading posts that seem to say ARC is 2 channel only, those such posts may be correct for TV model years older than 2016/17.ARC is two channel PCM or multichannel lossy Dolby Digital+ including Atmos. EARC has multichannel PCM, TrueHD, and DTS:HD/X