Cadence Acoustics CSA3000.1 2000 Watt Peak Mono Block Class AB Amplifier Cadence Momentum Series CSA3000.1 class AB 1-channel amplifier 250W x 1 at 4 ohm RMS, 500W x 1 at 2 ohm RMS, 1000W Peak Power/2000W Dynamic Power Frequency Response: 20Hz - 20 kHz THD: &lt;0.01%; S/N Ratio: &gt;96dB; Input Voltage: 200mV-8V Dimensions (L x W x H): 11.5 inches x 8 inches x 2 inches