KAC-8403 High Quality 4-channel Power Amplifier CEA-2006 CompliantLow-pass FilterHigh-pass FliterBass Boost CircuitLine outSpeaker level InputDie-Cast Aluminium Heat Sink Key Features High Quality 4-channel Power Amplifier Single-side Exposure of Terminals for Multi-Installation Maximum Output Power 800W Built-in High & Low-pass Filter Blue Illumination Amplifiers X302-4X-Series, Class D 4-Channel Power AmplifierX802-5X-Series, Class D 5-Channel Power AmplifierKAC-M1814Compact 4-Channel Digital Amplifier