Kind of, for the first half of your question.
The Era 300 will need to be set up as a second room, then grouped in order to play the content from the ‘home theater’ room that contains your Beam, Sub, and two Ones. This means there will be at least a 75 ms delay, but only when playing the TV’s input. When streaming music, both ‘rooms’ will be in sync.
And to the second half, yes, using the Sonos adapter, you’ll be able to connect a pre-amped turntable to the Era 300, and have that play in either, or both rooms, totally in sync.
Thanks Bruce. That’s very helpful. Not sure how a 75ms delay will sound or if best only to group link on music.
Thanks for the grouping link
Best
Chris
Great thing with Sonos: try it and see (listen). If it’s ok, you win. If not, use it elsewhere or return it to Sonos within the home-trial period for a full refund.