Bose Lifestyle 18 DVD Home Entertainment System (Black) (Discontinued by Manufacturer) ADAPiQ audio calibration system analyzes & adjusts system sound according to size and shape of the room, speaker placement, and listener location Acoustimass Bass Module can be hidden, and all the sound seems to come from five Virtually Invisible cube speakers Breakthrough Videostage 5 decoding circuitry delivers high quality Integrated DVD player Stereo AM/FM radio with 50 presets, scan and seek Five channel surround sound from any source from mono TV shows to Dolby Digital 5.1 and DTS encoded movies