Bring all your entertainment to life like never before with our most advanced soundbar and most powerful subwoofer. Hear and feel every detail of music, TV, movies, games and more with this dynamic home theater duo. Featuring breakthrough Sound Motion™ technology, Arc Ultra fills every inch of the room with perfectly clear, balanced sound. With Dolby Atmos, feel immersed in a 9.1.4 spatial audio experience. Sub 4 delivers pulse-pounding bass with virtually zero distortion. Breeze through setup with help from the Sonos app. Sub 4 connects to Arc Ultra over Wi-Fi, so you can place it wherever it fits and looks best in the room. When the TV is off, stream music and more over Wi-Fi or Bluetooth. Enjoy easy control with your TV remote, the Sonos app, Apple AirPlay 2, Sonos Voice Control, and Amazon Alexa.