Class D Full-Range and Monoblock Amplifier RMS: 285 watts x 4 chan @ 4 ohms, 375 watts x 4 chan @ 2 ohms, Bridged, 750 watts x 2 chan @ 4 ohms Total Peak Power: 3000W MOSFET Power Supply w/ Audiophile Grade IRTM Transistors Military Grade SMT PCB Maintains Dynamic Performance 4.75 W x 12.25" L x 1.625" H