Sonos Sub Gen 4 SubwooferSub 4 unlocks the full power of Sonos sound to immerse you deeper in every scene and song. Pair Sub 4 with your Sonos soundbar or speaker for a difference you can hear and feel. Dual force cancelling woofers deliver pulse pounding bass and virtually eliminate distortion. Updated with a matte finish, the iconic design looks great in your home. Set it up in minutes just plug in the power cable and open the Sonos app. Sub 4 connects to your system