Details: Powerful new sound for your home theater. More wattage for your music and movies. LG's SNC4R sound bar pushes 420 watts of power from 4.1 channels, including deep bass from a wireless, external subwoofer. Hear sound all around you when you wirelessly pair the included additional surround sound speakers for a full cinematic audio experience. This included rear speaker kit expansion delivers audio from behind for greater depth and immersive surround sound.