Power Output: This car audio amplifier deliver what it takes with 400 Watts RMS power with high performance for internal and external audio systems using one or more speakers.Impedance & Compability: 2 Ohm amplifier; Full Range & BridgeEqualization and Sound Control: Variable Crossover (H.P.F. or L.P.F.); Crossover Switches; Cut-off functionInput and Output Options: RCA input; High input; 4 independet channelsFeatures: High performance & Sound quality; Compact amplifier; Discret and silent