Denon released a new FW update that lets AirPlay see a stereo pair as a single speaker, so now they do show up correctly in Roon. However, Denon hasn’t added support for the RAAT protocol, so you’re still limited to the max sound quality of AirPlay 2, which unfortunately is 44.1/16. The Bluesound speakers support higher bitrates, but don’t have native DSD support. But, I find that since I’m using Roon way more than I’m using a Media Server or a USB thumb drive, I’d prefer to have gone with the Bluesound system over HEOS.