What you need to know Bundle: Sonos Arc Ultra sound bar plus Sonos Sub 4 wireless subwoofer 9.1.4 spatial audio with Dolby Atmos The Sub 4 is wireless Built for cinema-quality audio in any room Bring your movies, shows, and music to life The Arc Ultra's drivers and Dolby Atmos deliver 9.1.4 spatial audio that surrounds you from every angle The Sub 4's dual force-cancelling woofer delivers deep, powerful bass Connect it to your entertainment setup Pair the Sub 4 wirelessly with the Arc Ultra Dolby Atmos playback depends on a compatible TV and supported content Required accessories (sold separately) HDMI or optical digital cable, depending on how you're connecting the sound bar to the TV This description was generated by AI and reviewed for accuracy.