Bose Lifestyle T20 home theater system--Black (Discontinued by Manufacturer) 5-speaker surround sound system, Includes 4 Direct/Reflecting speakers and one center channel speaker, balanced by an Acoustimass module to deliver a fuller range of sound Includes Direct/Reflecting speakers, center channel speaker and Acoustimass module Unify Intelligent Integration System allows for guided setup and simplified use/programming with easy-to-follow onscreen messages HD connectivity for up to 6 sources (4 HDMI), video upscaling to 1080p ADAPTiQ audio calibration system analyzes your room's dimensions and other variables, then automatically adjusts the sound of your Lifestyle surround sound system