SPL FX2.2200 2200 Watt Peak RMS 2-Channel Amplifier 2 ch. Class A/B for max sound quality. Peak Power = 2200 Watts into 4 Ohm, RMS Power into 4 = 2 X 370, RMS Power into 2 = 2 X 450, RMS power into 2 Bridged mono = 900 Tri-Mode Capable: Can run three channel with 2 stereo and mono output at the same time. Variable 0-24dB Bass Boost, Bass Knob Control included. Variable Subsonic Filter 30-175Hz. Frequency Response: 10Hz - 30kHz, Signal-to-Noise Ratio: 97dB, Total Harmonic Distortion: .02% Demensions: Length 21.625", 2"h x 9"w