4 Channel Full Range Car Audio Amplifier 4 x 220 watts TRUE RMS certified

QS Series amplifiers are all about efficient design capable of full-range frequency response at a great price! Features a regulated power supply that is able to constantly deliver power and provides an unsurpassed efficiency rate of 80-90% in a small aluminum heatsink. 4 x 220 watts TRUE RMS certified at full range output Digital Class D Brazilian Technology 4 Channel car audio amplifier stable at 2 Ohm gives you the benefit of wiring multiple speakers and dividing the power per channel. Engineered to be the most efficient full range amplifier so that you can get the most out of your vehicle's electrical system! A small footprint and compact chassis make this amplifier easy to install anywhere in the vehicle: 8-in Wide x 7.90-in Length x 2.65-in Height 2 Channel Bridged - double the power output to your speakers by bridging two channels. Minimum impedance of 4 Ohms per bridged channel at output power of 2 x 450 Watts RMS. Rated RMS Power at 14.0 V at 2 Ohm 4x 220 Watts Rated RMS Power at 14.0 V at 4 Ohm 4x 140 Watts Bridged Rated RMS Power at 14.0 V at 4 Ohm 2x 450 Watts