KAC-6104D Class D mono power amplifier Class D AmplifierFull Range Digital AmplifierCEA-2006 CompliantLow-pass FilterLine outSpeaker level Input Key Features 600W maximum output power Built-in variable low-pass filter Built-in Bass expander 2 ohms load capability 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