Lanzar MXA282 Max Pro 4000-Watt 2-Channel High-Power Mosfet Amplifier MOSFET amplifier with 2000 Watts peak power (4000 Watts bridged), 2 x 300 Watts RMS @ 4 ohms, 2 x 450 Watts RMS @ 2 ohms, and 900 watts RMS @ 4 ohms bridged. 18dB bass boost circuit with included bass boost remote control Electric crossover network with High- and Low-pass filters Advanced protection circuitry with LED indicators Variable phase shift control