Additional Images KAC-X4D Four channel digital power amplifier DISCONTINUED MODEL Class D AmplifierFull Range Digital AmplifierCEA-2006 CompliantLow-pass FilterHigh-pass FliterCooling Fan 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