420W of power deliver rich, powerful sound 3.1 channels create an immersive listening experience Wireless subwoofer is simple to setup and pumps out deep, heavy bass Bluetooth connectivity allows you to get everything installed in a snap Meridian Technology inside gives all audio an expanded soundstage with greater height, width, and depth Dolby Atmos technology delivers every note and nuance with ultimate clarity HDMI eARC port means one cable can carry higher bit rates, Hi-Res content, and uncompressed Dolby Atmos audio Required accessories (sold separately) HDMI or optical digital cable, depending on how you're connecting the sound bar to the TV