X301-4 X-Series, Class D 4-Channel power Amplifier Class D AmplifierFull Range Digital AmplifierCEA-2006 CompliantLow-pass FilterHigh-pass Fliter Key Features 4-channel digital power amplifier D-class Amplifier Compact chassis Built-in high & low pass filter Speaker Level Input Signal sensing Turn-on Extruded aluminum heat sink design 2 ohms load capability Screw-type terminals Amplifiers KAC-M1814Compact 4-Channel Digital AmplifierXH901-5X-Series, 5-Channel Class-D Power AmplifierXH401-4X-Series, 4-Channel Class-D Power AmplifierKAC-PS704EXPerformance Standard Serie 4/3/2ch Power AmplifierKAC-PS404Performance Standard Serie 4/3/2ch Power AmplifierX802-5X-Series, Class D 5-Channel Power AmplifierX302-4X-Series, Class D 4-Channel Power AmplifierX502-1X-Series, Class D Mono-Channel Power Amplifier