Ignite Audio Mono Block Class D Car Amplifier 4000 Watts Peak Power Mono Block Class D 4000 Watts (Peak Power) Amplifier RMS Power Handling @ 1 Ohm: 750 Watts x 1/ RMS Power Handling @ 2 Ohms: 530 Watts x 1/ RMS Power Handling @ 4 Ohms: 300 Watts x 1 Total Harmonic Distortion (THD):  85dB Low Level Input Sensitivity: 0.2-6V/ Dimensions LxHxW: 13.66 Inches x 2.05 Inches x 8.94 Inches