Pyle PLA4478 4 Channel 4000 Watts Bridgeable Mosfet Car Amplifier, 47K Ohms Input Impedance

The Pyle PLA4478 is a four-channel, 4000-watt power supply bridgeable amplifier. It's equipped with everything you've come to expect from quality car amplifiers. The RCA ports are silver-plated for eliminating signal loss. A subsonic filter allows low-end interference to be cut, so your speakers will always be delivered the highest quality audio. The MOSFET pulse width modulation power supply allows for a clean, distortion-free signal to your speakers. To keep both your car and the amplifier safe, this model is equipped with thermal, overload and short circuit protection.