I selected/created a Dolby Atmos playlist in TIDAL to see how ROON handles multi-channel output. However if I look at the flow then ROON says the source is 2 channel, hence I don’t get multi-channel output.
My setup is ROCK on a NUC and connected the HDMI connection to my HDMI AUX connection on my Marantz SR6012. I configured the HDMI output zone with a 5.1 channel layout.
At this point in time, Tidal Atmos streaming support is limited to Android phones, Apple TV 4K, NVidia Shield TV, and Amazon Fire TV using the Tidal application.