220W power capability delivers louder sound with increased clarity and detail 2.1 channel offers more immersive audio experience Powerful wireless subwoofer delivers deep and rich bass Dolby Atmos technology enhances spatial sound that leaves you immersed in games, movies, and music DTS Virtual:X delivers virtual surround sound lets you enjoy your audio without the need for additional speakers Compatible with select TCL TVs, allowing you to use TV as Center Channel Mode for better dialogue clarity TCL Mobile App allows you to tune the system for optimal sound experience in your room Roku TV Ready for seamless compatibility and integration with Roku TV Required accessories HDMI or optical digital cable, depending on how you're connecting the sound bar to the TV