4 x 300 watts at 1 Ohm TRUE RMS certified at full range output Digital Class D Brazilian Technology, gives you the benefit of wiring multiple speakers and dividing the power per channel ^^ 4 Channel car audio amplifier stable at 1 Ohm gives you the benefit of wiring multiple speakers and dividing the power per channel. ^^ 2 Channel Bridged Double the power output to your speakers by bridging two channels. 2x 600 Watts RMS at a minimum impedance of 2 Ohms per bridged channel ^^ A small footprint mini heavy duty heatsink make this micro amplifier easy to install anywhere in vehicles, motorcycles, 4-wheelers: Overall 6.75 Width by 5.90 Length and only 2.60 Height. ^^ The MDX Series mini amplifier is ideal for motorsport applications such as custom motorcycles, ATVs and Slingshots!