Pyle PLA4278 4-Channel 2000 Watt Bridgeable MOSFET Amplifier 4 to charge 2000 watts bridgeable MOSFET amplifier - maximum power output 4 x 500W Output power @ 14.4V DC, 50Hz - 2 ohm stable - MOSFET power supply - PWM ( pulse-width-modulation Bridgeable RMS power @ 4 ohms: 2 x 1000W - 4 channel bridgeable MOSFET amplifier - frequency response 20 hz-50khz (3Db) Maximum Power Output 4 x 500W - 2 Ohm Stable - Custom Terminal Block for Speaker Connection - S/N Ratio: &gt;90dB Bridgeable RMS Power @ 4 Ohms: 2 x 1000W - MOSFET Power Supply - Thermal / Overload / Short Circuit Protection - Dimensions:10.24''W x 2.21''H x 14.58''L 4 Channel Bridgeable MOSFET Amplifier - PWM ( Pulse-Width-Modulation ) System - Input Impedance: 47K Ohms Frequency Response 20 Hz-50kHz (3dB) - Glass Epoxy PCB - Soft Turn On/ Off Output Power @ 14.4v DC, 50Hz - Silver RCA Inputs - Advanced Protection Circuitry