KAC-8103D Class D Mono Channel Power Amplifier Class D AmplifierCEA-2006 CompliantLow-pass FilterBass Boost CircuitInfrasonic filterLine outSpeaker level Input Key Features D-class Amplifier Circuit 2Ω Load Capability Built-in Low-pass & Infrasonic Filter 1000 Watts max Output Power Amplifiers X302-4X-Series, Class D 4-Channel Power AmplifierX802-5X-Series, Class D 5-Channel Power AmplifierKAC-M1814Compact 4-Channel Digital Amplifier