The Polk Audio Signa S2 is a 2.1 channel sound bar with a wireless compact subwoofer. Polk Voice Adjust technology lets you tune dialogue clarity, and Dolby Digital decoding handles surround soundtracks. At 2in. tall it fits in front of most televisions without blocking the screen. This unit is a Geek Squad Certified Open Box product. 2.1 channel system pairs the sound bar with a wireless compact subwoofer Voice Adjust technology lets you tune dialogue clarity to your preference This description was generated by AI and reviewed for accuracy.