KAC-PS404 Performance Standard Serie 4/3/2ch Power Amplifier Model Discontinued CEA-2006 CompliantLow-pass FilterHigh-pass FliterSpeaker level InputDie-Cast Aluminium Heat Sink Amplifiers X802-5X-Series, Class D 5-Channel Power AmplifierXH401-4X-Series, 4-Channel Class-D Power AmplifierX302-4X-Series, Class D 4-Channel Power AmplifierKAC-M1814Compact 4-Channel Digital AmplifierX502-1X-Series, Class D Mono-Channel Power AmplifierKCA-RC01AWired Remote Controller for X-Series Amplifiers