LG NB3520A 300W Sound Bar with Wireless Subwoofer (2012 Model) The Bluetooth enabled feature allows users to stream music from their smart phone to the speaker sound system. Don't just watch 3D, hear it in 3D. This sound bar is equipped with 3D Sound to help achieve a greater level of sound immersion with 3D content. Installation is simple and speaker wire management is reduced with the Wireless Subwoofer System. Connections: Optical digital audio in x2, USB (single USB) x1and audio input x1