Qobuz has a dozen or so multichannel albums which are not playable directly in the Qobuz app but only via Roon. OTOH, they are not generally visible in Roon unless one first tags them as favorites in the Qobuz app. A dropped ball for both but, until there is significant multichannel content, not a biggie.
How did you find which albums in Qobuz are multichannel?
Edit: I found three multichannel classical recordings by searching “5.1 multichannel” in the Qobuz app. If I search “multichannel”, the results I found were not multichannel even though one track specifically said “5.1 Multichannel version”.
Is it just a hit and miss endeavor to find the multichannel recordings in Qobuz?
Using the Qobuz PC app (not Roon!) and search for “5.1” (or “multichannel” or “surround”).
They will play only as stereo in Qobuz.
However, if you flag them as favorites in Qobuz, they will also appear as favorites when you choose Qobuz favorites within Roon and, with suitable connected equipment, they will play in 5.1.
Don’t expect much but it does prove that multichannel is supported in principle!
I just liked 20+ multi-channel albums in Qobuz and soon after, they all showed up in Roon. I switched my zone from Oppo 203 ethernet to Oppo 203 HDMI and played a short bit of the first number from each album. While they sounded great on my 5.1 surround sound system, I just can’t listen to classical and had to delete them all. I guess you classical buffs will have to enjoy this until they include something I can listen to. Enjoy, it does should great.
Now up to 33 albums in multi channel on Qobuz, although still mainly Classical. Some really good artists and performances, although still missing Rock, Pop, Jazz etc. I just found a Stevie Nicks greatest hits album “Stand Back” which is listed as 5.1. Unfortunately, it is just stereo, albeit in fairly good sound quality. https://open.qobuz.com/album/cjlqnpc1lenla
Given the large number of existing multichannel masters, from the Quadraphonic era through to SACD, it would be great if Roon and Qobuz could encourage more multi-channel streaming from the mainstream record companies, especially given the impact of Apple Music and the launch of Atmos.