Bring powerful sound to every corner of your home with the Sonos Arc Ultra sound bar, Sonos Sub 4 subwoofer, and Sonos Era 300 speakers bundle. The sound bar's 14 drivers and Dolby Atmos offer dynamic, 9.1.4 surround sound that immerses you in every moment, while the Sub 4 adds deep bass for pulse-pounding intensity. Plus, the speakers fill any room with multi-directional audio.