Crunch DRA1150.2 V-Drive 2-Channel Car Amplifier, 1100-Watt V-Drive technology powers these amplifiers with beefed up circuitry plus clean and powerful music power SEPP (Single Ended Push Pull) A/B Class 2 and 4 channel amplifiers for the sound quality required for great musical power Mono Block amplifiers deliver powerful sound quality with high power and efficient D-Class power V-Drive 3P Power supply with Twin-Coil Isolation Design (TCID) power supplies for maximum efficiency in converting 12volt power into huge watts through the amplifiers 2 x 275 @ 4 Ohms, 2 x 550 @ 2 Ohms, 1100 WATTS x 1 @ 4 Ohms Bridged