4 channel amplifier car audio rated 190W @ 2-ohm load x 4-ch ( 13.2 v); 125W @ 4-ohm x 4-ch ( 13.2 v); 400W @ 4-ohm bridged x 2-ch ( 13.2 v) Constructed with an advanced PCB board featuring industry-leading capacitors, high quality transformers, and cutting-edge inductors to ensure this 4-channel car amplifier delivers the power you need to outshine the competition in the SPL lanes Heavy duty heat sink design, high power MOSFET switching technology, and best in class internal components will keep the car amplifier running cool even for the most demanding playlists Equipped with a Diode 6A60 for reverse polarity protection along with a 4-way protection circuitry; rest easy at night knowing your 4ch car audio amplifier is safeguarded