With the Sonos 3.1 set, consisting of the Playbar and Sub, you get to enjoy powerful home cinema sound. This bundle consists of the soundbar and subwoofer of the Sonos multi-room system. With 9 integrated speakers, the Playbar fills every room with natural sound for games, movies, concerts, and all the music in the world. The Sonos Sub provides deep and rich sound that you can't only hear, but also feel. The flat design allows you to place the subwoofer anywhere, even flat underneath a couch.