One of the problems with home-theater surround sound is finding the space to place 6 speakers in a room. It can be a challenge. Sony's HT-CT100 converts the surround experience to 3.1 channels and uses only 2 speakers, a subwoofer and a SoundBar. The SoundBar is placed like a center channel speaker directly over the TV. Speakers within the bar radiate at different angles to deliver center, left, and right channels through a spatially enhanced soundfield. With 50 Watts to each channel + 100 Watts directly to subwoofer, the system delivers 250 watts total. Featuring HDMI - Component Video - Optical A/V ports, you can connect your TV and DVD or Blu-Ray player directly to the system. It's the simplest, most streamlined way to enjoy home-theater surround. LPCM Playback - LPCM is a method of encoding audio information digitally which can have up to 8 channels of uncompressed audio. This wider bandwidth allows for high resolution audio which is closer to the original 3 Optical, 1-Coax Dolby Digital/DTS/ProLogic