Soul-shaking sound. Heart-pounding design. One-button setup. • Layers on jaw-dropping bass to any Sonos speaker. • Uses your WiFi, easy to set up and expand your system over time. • Two force-cancelling speaker drivers positioned face-to-face offer deep sound with zero cabinet buzz or rattle • Place it anywhere in the room – even lying flat under a couch. • Works with all Sonos amplified components: CONNECT:AMP; PLAY:5; PLAY:3; PLAY:1; PLAYBAR.