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