Lanzar Heritage Series Class A/B Monoblock Amplifier, 1500W RMS/3000W MAX 1500 Watts RMS/3000 Watts MAX 1500 x 1 RMS @ 2 Ohms 650 x 1 RMS @ 4 Ohms DIM (WXHXL) 8.81"e; x 2.24"e; x 12.99"e; Fuse: 40A x1 2 Ohm Stable Electronic Crossover Network Bass Boost Circuit Silver RCA Inputs 3-Way Protection Line Outs for Left and Right Channel Low Pass Filter Controls Power and Protection LED Indicators Soft Turn-on/Turn-off THD: <0.01%. S/N Ratio: >90dB Freq. Response:10Hz~45KHz LPF Freq. Response: 50Hz-250Hz