This is a new Distinct Audio DSB904 900 watt, 4-channel car audio amplifier. This 900 watt (250 watts RMS @ 2 ohm) high performance MOSFET 4-channel amp allows you to drive multiple speakers and subwoofers, it is also bridgeable to power a single sub. With a 5-way protection circuitry, this is a safeguard against the amplifier from being overdriven or even blown at high levels of use. By being equipped with a built-in variable high pass and loss pass crossover (50-250 Hz), you don't have to worry about spending extra money on an external crossover. You can now run your component system or highs on the high pass and run your single or multiple subwoofers on the low pass. Additionally, this amplifier is equipped with a set of RCA inputs/outputs for connecting multiple amps, and nickel plated connectors.