Pyramid PB738GX 1000 Watt 2 Channel High Power Mosfet Amplifier 500 Watts x 2 Output - Power ON LED Indicator - Thermal / Overload / Short Circuit Protection 1000 Watts x 1 Bridged Output - Protection LED Indicator - Anti-Thump Turn-On Variable Hi/Lo Electronic Crossover Network - Remote Bass Boost - Dimensions: 2.4' H x 10.8'W x 12' L Variable Bass Boost - Hi/Lo Impedance Input Variable Input Level (Gain) Control - Blue Light Illumination Top Cover