A friend of mine is building a new house. He will have a nice cinema room. He wants to use a Sonos system for it. The Playbar or Playbase, the sub and rear speakers.
Are the Sonos One (SL or just One) the only Sonos speaker that can be use as rear speakers? Can the Sonos Amp and Sonos In-wall / In-ceiling speakers be use for rear speakers with a PlayBar and sub?