Boss CW150 Chaos Wired 200 Watt 2-Channel Power Amplifier MAX POWER, 2 OHM, 100 Watts x 2 RMS POWER, 4 OHM, 50 Watts x 2 SIGNAL-TO-NOISE RATIO, 90 dB; THD, 0.05% DIMENSIONS: 9-13/16-InchW x 2-5/16-InchH x 6-1/8-InchL