DESC: Four Channel Bridgable Amplification Tri-Way Configuration:4/3/2 Channels 4x250 Watts Total Output 1000 Watts Total System Output Variable Gain Control/Remote Turn On/Off MOSEFT Pulse Modulation Power Supply 2 Ohm Stereo Stable Built-in Variable Subwoofer Crossover (Rear) Gold Plated RCA Low Level Inputs Hi-Level Low Impedance MOLEX Input Speaker Output Barrier Strip S/N Retio:Greater Than 90dB THD Less Than 0.04% Frequency Response:15-30k Hz Overload/Thermal/Short Circuit Protection Power On LED Indicator LED Diagnostic Condition Indicator Automotive Type Fuse Protection