KAC-8406 4/3/2 Channel power amplifier CEA-2006 CompliantLow-pass FilterHigh-pass FliterBass Boost CircuitCooling FanSpeaker level InputDie-Cast Aluminium Heat Sink Key Features 4/3/2 Channel power amplifier 900 Watts max Output Power 2Ω Load Capability Cooling Fan Built-in variable low-pass filter Built-in variable high-pass filter Bass Boost function Signal Sensing Turn-on Speaker level input Amplifiers X302-4X-Series, Class D 4-Channel Power AmplifierX802-5X-Series, Class D 5-Channel Power AmplifierKAC-M1814Compact 4-Channel Digital Amplifier