PlexAmp is great, but I noticed that the Mac version doesn’t output multichannel sound via my HDMI audio interface even though the stream from the server is multichannel (as I can see in PlexDash).
Other Plex players handle multichannel audio fine, so please add that capability to PlexAmp!
On the list for the future 
Also kindly enable “Easy” switching/tweaking either on server side or on client side to enable/disable Multichannel Audio/Downmixing thereof for multichannel music files especially FLAC files "ON LOCAL AREA NETWORK.!!! Thanks