This Sonos bundle pairs the Sonos Arc Ultra sound bar with the Sonos Sub 4 subwoofer and two Sonos Era 300 speakers, delivering dynamic 9.1.4 surround sound with Dolby Atmos from the sound bar's 14 drivers, plus deep bass and multi-directional audio that fills any room. Sonos Arc Ultra sound bar with 14 drivers and Dolby Atmos delivers 9.1.4 surround Sonos Sub 4 and two Era 300 speakers add deep bass and multi-directional audio This description was generated by AI and reviewed for accuracy.