Features Mono Class D Technology 2Ω Mono load Capability Audiophile Grade Nickel Plated RCA connectors Variable 12db Low-pass crossover Selectable 12dB Bass Boost Variable Sub-sonic Filter Marine Grade Conformal Coated Double Sided PCB Compatible with any 4/2Ω Subwoofer Specifications Rated Power @14.4 Volts 1 x 250 Watts @ 4Ω 1 x 500 Watts @ 2Ω PARAMETERS THD (100Hz @1Ω) 0.04% Bandwidth (-3 dB) 18Hz ~ 22KHz Damping Factor (1KHz @ 4Ω) 100 S/N Ratio (as weighted @ 1 Volt) 99db Input Sensitivity 0