Upgrade your TV audio with enhanced voice clarity and virtual surround sound for a spectacular cinematic experience. 3.1 CH wired subwoofer Bluetooth HDMI ARC 150W Virtual Surround Sound for a realistic movie experience Philips Virtual Surround Sound produces rich and immersive surround sound. Highly advanced spatial algorithms faithfully replicate the sonic characteristics that occur in an ideal 5.1-channel environment. Any high quality stereo source is transformed into true-to-life, multi-channel surround sound. No need to purchase extra speakers, wires or speaker stands to appreciate room-filling sound. Wireless music streaming via Bluetooth Bluetooth is a short range wireless communication technology that is both stable and energy efficient.