Boss CX2500D Chaos Exxtreme 400 Watts 2-Channel Mosfet Power Amplifier with Sub Level Control Amplifier Class: Class D Technology: Digital Number of Output Channels: 1 Total Power: 2500 Watts Max Power @ 1 Ohm: 2500 Watts x 1 Max Power @ 2 Ohms: 1800 Watts x 1 Max Power @ 2 Ohms, when strapped with same model amplifier: 5000 Watts RMS Power @ 4 Ohms: 750 Watts x 1 Frequency Response: 15 to 150 Hz Total Harmonic Distortion (THD) @ RMS Output: 0.01% MAX POWER, 1 OHM, 2500 Watts x 1 MAX POWER, 2 OHM, 1800 Watts x 1 RMS POWER, 4 OHM, 750 Watts x 1; MAX BRIDGED POWER, 4 OHM, N/A SIGNAL-TO-NOISE RATIO, &gt; 100 dB; THD, 0.01% DIMENSIONS: 11-7/8-InchW x 2-5/8-InchH x 12-11/16-InchL