Hello, Regarding my UMC-200: I have a SONOS Connect connected to my UMC-200 via the Coaxial 1 connection. The UMC always defaults to a multichannel mode. I prefer to keep my stereo music "Stereo". How can I setup the UMC-200 so that the default mode is stereo for Coaxial 1 (or any input for that matter)? Thank you!