designed the OAE-1200.1D to be an extremely powerful, efficient, and highly reliable Monoblock Class D Amplifier. provides 1 Year limited Warranty. Monoblock amplifier; Class D topology; Max Power @1Ω 1*2400W, RMS Power @1Ω 1*1200W @2Ω 1*800W @4Ω 1*480W 1Ω stable; PWM MOSFET Power supply RCA and speaker level inputs Variable bass boost 0-12dB; Variable Low-pass filter 50-250Hz; Variable input gain control 0.2-8V Thermal and speaker short protection; Soft turn-on circuit LED power and protection indicators; Auto-turn on(high level) Remote subwoofer controller