Precision Power BA1600.4 1600W 4-Channel Black Ice Series Class A/B Car Amplifier Series 4-Channel Class A/B Car Amplifier RMS Power Rating: 4 ohms: 130 watts x 4 chan. / 2 ohms: 200 watts x 4 chan. / Bridged, 4 ohms: 400 watts x 2 chan. Max power output: 1600 watts 4/3/2 or Mono channel operation Direct Short, Thermal, & Overload Circuits Protect Amplifier