I recently bought the Beam and frequently sharing anything worth noting or the problems I have encountered on this forum.
Another issue I have found with the Beam worth noting is the audio/video sync issues through HDMI ARC (out of all the interfaces!)
Optical works fine, but there's a flaw with some TV's passing Dolby Digital through HDMI ARC causing large (300-400ms) sync issues where the audio comes after the video. You'd think ARC fixes this... but it seems to have made things worse.
Essentially, some TV's struggle to decode video and pass DD5.1 through in sync. My Sony 43XE7073 has this issue, but it's common with some people who have this issue with flagship TV's too.
You'll find if you run audio in PCM or just stereo the issue is heavily remedied or gone. Something to do with the chip in modern TV's?
Anyway, I use my Xbox One S for media and am now (unfortunately) using the Optical out as my TV doesn't have an option to disable audio in conjunction with the Beam and using the remote raises the volume of both the Beam and the TV. So, again, disabled TV audio entirely and am using a separate audio output from the Xbox.
One thing to be aware of is that this has nothing to do with Sonos. If you have a TV that can pass DD flawlessly that's great. But there is a fundamental issue with some TV's at this time.