KAC-8452 High Quality 4-channel Power Amplifier Low-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 Amplifiers X302-4X-Series, Class D 4-Channel Power AmplifierX802-5X-Series, Class D 5-Channel Power AmplifierKAC-M1814Compact 4-Channel Digital Amplifier