Lanzar MXA412 1000 Watt 4 Channel High Power MOSFET Amplifier 4 x 125 Watts RMS at 4 Ohms 4 x 250 Watts Max at 4 Ohms 2 x 500 Watts Max at 4 Ohms Bridged 4 x 200 Watts at 2 Ohms RMS Electronic Crossover Network Bass Boost Circuit Variable Phase Shift Control 2 Ohms Stereo Stable Anti-Thump Turn-On Tri-Mode Configurable Soft Turn On/Off High & Low Level Inputs Blue Light Illuminated Crossover Control Power & Protection LED Indicators Advanced Protection Circuitry Bass Boost Remote Control T.H.D: 0.04% S/N Ratio: 90dB Channel Separation: 65dB Frequency Response: 15Hz- 35kHz Dimensions (W x H x L): 10.47" x 2.46" x 12"