Boss DD3600 Class D Monoblock Amplifier with Maximum Power 3600 Watts MAX POWER, 1 OHM 3600w x 1; MAX POWER, 2 OHM 2400w x 1; RMS POWER, 4 OHM 1350w x 1; RMS POWER, 2 OHM 1850w x 1 FREQUENCY RESPONSE 20-1500Hz; SIGNAL-TO-NOISE RATIO &gt; 100 dB DIMENSIONS: 11-InchW x 2-5/16-InchH x 14-3/16-InchL Remote subwoofer control; Line out (for system building); Variable low pass crossover (24dB/cot); Variable bass boost 0 to +18dB Strapping capability, Strap two amps together for twice the power; Input sensitivity selector; Variable subsonic filter (24dB/cot); Phase switch; Power and protection LEDs