B-52 MATRIX-1500 1200-Watt 15 Sub & Two 10 2-Way Three Piece Active Speaker System 15" Subwoofer & two 10" 2-Way satellites Integrated 1200W three channel amplifier in the sub cabinet 700W sub channel - Class G 2 x 250W sat channels BBE Sonic Maximizer with LF Contour and HF Process controls