Cadence Acoustics XaH300.1b 600 Watt Peak Mono Block Class AB Amplifier Cadence XaH300.1 class AB mono block amplifier 200W @ 4 ohm RMS, 300W @ 2 ohm RMS, 600W Peak Power Frequency Response: 10Hz - 250Hz Minimum THD: &lt;0.1%, S/N Ratio: &gt;97dB, Damping Factor: &gt;100 @ 100Hz Dimension (L x W x H): 10.4 x 10.5 x 2.6 inches