SONOS SUB Wireless Subwoofer (Matte Black) (Discontinued by Manufacturer) Seamlessly integrates with the Sonos System. Works with Play:3, Play:5 and CONNECT:AMP Two force-cancelling speakers positioned face-to-face offer deep sound with zero cabinet buzz or rattle Fills any room with deep, clear HiFi sound Wireless, one-button setup Place it anywhere in the room, even lying flat under a couch