VIZIO Wireless TV Sound Bar System - 3.1 Channel (SB3831-C6M) - Pre-Owned Clarity as loud as 95 dB with less than 1% total harmonic distortion Subwoofer delivers wall-shaking bass as deep as 70 Hz Includes: Sound bar, wireless subwoofer, speakers and more Table top or wall-mountable installation Sound bar buttons: power, input, Bluetooth, volume up/down