Louder. Powerful TV Sound. The VIZIO SB2021n sound bar delivers amazing audio quality and power bass, bringing entertainment to life in any room of your house. Multi-Dimensional Sound. Built-in DTS Virtual:X technology provides a multi-dimensional sound experience that gives a virtual height and surround element, to dramatically fill the room with amazing sound. Hearing is Believing With its compact size and wireless subwoofer, the SB2021 still packs a serious audio punch, and fits nicely in any room of the house. Dynamic Audio Range Dual mid-range drivers provide the power to achieve both high and low range frequencies. Bring on the Bass The compact wireless subwoofer adds a deep, balanced sound that delivers powerful bass to your favorite content.