The VIZIO High Definition Sound Bar offers a slim design with spectacular sound. With this sound bar your can maximize you sound and minimize the clutter at the same time.VIZIO High Definition Sound Bar, VSB200-B, Refurbished: 4 x 3" high-efficiency hand built mid/bass transducers 2 x 3/4" high performance aluminum dome neodymium speaker Speaker bar frequency response: 80Hz to 20k. Hz Integrated Class-D Amplifier at 15 x 2 channel 2 stereo RCA inputs 1 S/PDIF fiber optic input SRS Tru. Surround/SRS Tru. Volume