Memphis Audio MJP800.4 4-Channel 800 Watt Amplifier - 200 Watts RMS x 4 at 2-Ohm Features - • Extruded aluminum Heatsink • 12dB/octave butterworth crossovers • Variable crossovers • 3 EQ boost settings - 0,6,12dB • Strap-able mono block amps • RMS Power/CH @ 4: 125x4 • RMS Power/CH @2: 200 x 4 • RMS Power/CH @ 1: na • RMS Power/Bridge 4 Ohms: 400x2 • THD: <1% • Signal/Noise Ratio: >80dB • Frequency Response ± 0.5dB: 10Hz – 25kHz • Crossover Frequency (HPF): 50-250kHz • Crossover Frequency (LPF): 50-250Hz • Subsonic: na • Dimensions (in): 7.5 x 2 x 8.7" • Input Range: 400mV - 7.5V LOW LEVEL, 3V-20V HIGH LEVEL • crossover slope: 12db crossovers