Big Bang 1200W 4 Channel Full Range Class D Amplifier 1200 W MAX Power 4 Channel 225 W X 4 RMS @ 2 ohm 113 W X 4 RMS @ 4 ohm 450 W X 2 RMS Bridged @ 4 ohm Dimensions: 7"e; W x 2.7"e; H x 8.8"e; L Fuses: 2 x 25A Full Range Class D MOSFET Power Supply RCA In/Outputs Variable High Pass Crossover Variable Low Pass Crossover Variable Bass Boost Blue Illuminated Badge