Cadence Acoustics Xa175.4 1400 Watt Peak 4-Channel Class AB Amplifier (Orange) Cadence Xa175.4 class AB 2-channel amplifier 110W x 4 @ 4 ohm RMS, 175W x 4 @ 2 ohm RMS, 350W x 2 @ 4 ohm bridged RMS, 1400W Xenith Power Frequency Response: 10Hz - 40 kHz Minimum THD: 97dB, Damping Factor: &gt;198 @ 100Hz, Channel Separation: &gt;50dB Dimension (L x W x H): 14.5 x 10.5 x 2.6 inches