Rockford Fosgate Punch 4 Channel 400 Watt Full Range Class D Amplifier PBR400X4D

Frequency Response: 20Hz - 20kHz +/- 1dB Power Wire Gauge: 8 AWG Operating Voltage: 9 - 16 VDC Speaker Wire Gauge: 16 AWG Input Sensitivity: 150 mV to 12 V Rockford Fosgate Punch 4 Channel 400 Watt Full Range Class D Amplifier PBR400X4D This Listing Includes: (1) Amplifier Specifications: Number of Channels: 4 Total Power(Sum of Rated Power): 400 Watts Bridgeable: Yes Frequency Response: 20Hz - 20kHz +/- 1dB Input Sensitivity: 150 mV to 12 V Circuit Topology Class: Class D Efficiency (average): More Than  75% Power Wire Gauge: 8 AWG Power Input Connector: Detachable Compression Terminal Speaker Wire Gauge: 16 AWG Cooling: Convection Heatsink: Extruded Aluminum Operating Voltage: 9 - 16 VDC Recommended Fuse(not included): 60 A Average Current Draw (13.8V Music): 27 A Max. Current Draw (13.8V Sinewave): 50 A Suggested Alternator: 75 A Total Harmonic Distortion (THD+Noise) -  4-Ohm Less Than 1.0 -  2-Ohm Less Than 1.0 Signal Input -  Input Switch: 2ch/4ch input switch -  Hi-Level: Variable DC offset sensitivity -  High-Level: Harness -  Low-Level: 2 Pair RCA Crossover Controls -  High-Pass: 60Hz or 80Hz @ 12dB/Octave -  Low-Pass: 80Hz @ 12dB/Octave Rated Power(RMS Continuous Power) -  50 Watts x 4 @ 4-Ohm -  100 Watts x 4 @ 2-Ohm -  200 Watts x 2 @ 4-Ohm Bridged Dynamic Power(PVC/PowerCube) -  75 Watts x 4 @ 4-Ohm -  130 Watts x 4 @ 2-Ohm -  270 Watts x 2 @ 4-Ohm Bridged Speaker Output Connector -  Front: 4-Pin Harness -  Rear: 4-Pin Harness Dimensions (H x W x D) 1.53 x 4.25 x 6.75 (in) 3.9 x 10.79 x 17.16 (cm)