Class AB monoblock; Mono subwoofer amp; Variable input voltage; QTD (Quick Thermal Dispersion) technology heat sink; Low-noise preamp; Low-level RCA inputs & outputs; Built-in variable electronic crossover (LP); Onboard bass boost; 1,500W max; 750W RMS x 1 @ 4ohm ; 1,500W RMS x 1 @ 2ohm ; Dim: 3.8″H x 17″W x 11.4″D;