Hi. I used to have a Denon/B&W setup, and mostly used “Multi Channel Stereo” setting (stereo output in front and back speakers). I have Arc, 2x One and Sub.
To achieve the same with Sonos, I have to :
1. Setup the two back speakers (One) as stereo pair
2. Start audio output from TV (ARC)
3. Add them to the TV-output
It would have been nice to be able to choose if the setup should be bundled as surround or multi-channel-stereo.