I would like to know if Roon support multichannel over Airplay, and how to do it, via AppleTV. My HBO app support multichannel via Airplay, so it is possible.
Is Airplay always stereo?
From wikipedia: " The streams are transcoded using the Apple Lossless codec with 44100 Hz and 2 channels symmetrically encrypted with AES, requiring the receiver to have access to the appropriate key to decrypt the streams. "
I’ve never heard of any airplay receiver that played anything but stereo.