Class “AB'' High-Current Dual Discrete Drive Stages, Mosfet PWM Power Supply, Electronic Crossover Network, Low Pass Filter Controls, Bass Boost Circuitry, Subsonic Circuitry, 2 Ohm Stable, Chrome RCA Inputs, Power Speaker Terminals, Line Output (L/R) Channels, 5 Way Protections, Power + Protection LED Indicators, Soft Turn ON/OFF Muting, Mono-Block Mosfet Amplifier, Accessories, 1 x 650W RMS @ 4 OHMS, 1 x 1250W Peak @ 4OHMS, 1 x 1500W RMS @ 2 OHMS, 1 x 3000W Max @ 2 OHMS, THD: 90dB, Freq. Response:10Hz~45KHz, LPF Freq. Response: 50Hz-250Hz, Subsonic Freq. Resp.: 0Hz~80Hz, Bass Boost(50Hz) : 0,6,12dB, Input Sensitivity:0.2V~6V, Fuse: 40A x1, Product Dimensions (L x W x H): 12.99'' x 8.81'' x 2.24'' -inches, Weight: 5.07 lbs.