Pyle 4 Channel Car Stereo Amplifier - 4000W High Power 4-Channel Bridgeable Audio Sound Auto Small Speaker Amp Box w/ MOSFET, Crossover, Bass Boost Control, Silver Plated RCA Input Output -PLA4478

Maximum Power Output 4 x 1000W - Bridgeable RMS Power @ 4 Ohms: 2 x 2000W - 4 Channel Bridgeable MOSFET Amplifier - Frequency Response 20 Hz-50kHz (±3dB) - Output Power @ 14.4v DC, 50Hz - 2 Ohm Stable - MOSFET Power Supply - PWM ( Pulse-Width-Modulation ) System - Glass Epoxy PCB - Silver RCA Inputs - Custom Terminal Block for Speaker Connection - Thermal / Overload / Short Circuit Protection - Input Impedance: 47K Ohms - Soft Turn On/ Off - Advanced Protection Circuitry - S/N Ratio: >90dB - Dimensions:10.24"W x 2.21"H x 17.72"L