Klipsch ProMedia Ultra 5.1 Multimedia Speaker System, (6 Speakers, Black) Four 2-way satellites, one 2-way center channel and a dual-driver 8" subwoofer Impressive 500 watts of total amplified power 20% larger enclosure designed to increase efficiency for more total output, lower distortion and deepen bass extension Magnetically shielded center channel provides rear post angle adjustment for optimum positioning Control module features separate main, center, rear and subwoofer controls 6 analog discrete channels (3 stereo miniplugs); auxiliary stereo miniplug music input