Bose LS35-BK Lifestyle 35 Home Entertainment System - Black (Discontinued by Manufacturer) DVD Player Supports - DVD-Video, CD, CD-R, CD-RW, PCM, Digital 5.1, MP3 flat files, MPEG-2 Direct/Reflecting speaker technology Bose Videostage 5 decoding & post-processing circuitry that automatically delivers 6 different channels of audio to 5 speakers Patented integrated signal processing Multi-Room Expansion with optional amplifiers/speakers or add-on powered speakers