It would be instructive to read my original review of the full SONOS system [PLAYBAR, SUB, PLAY:5].
This review will examine the addition of two PLAY:1s to that superb system. The PLAY:1 is the smallest SONOS speaker at (USD) $199.00 /each. They will be auditioned as rears converting my main floor lifestyle system into 5.1 surround sound. I'll also add my thoughts with the PLAY:1s setup as a standalone stereo pair.