Additional Images XR400-4 4 Channel Super Thin Digital Power Amplifier Class D AmplifierFull Range Digital AmplifierCEA-2006 CompliantLow-pass FilterHigh-pass Fliter Key Features 1000W Maximum power Built-in variable low-pass filter Buitl-in vriable high-pass filter 2 ohms load capability Dual power supply Power MOS-FET switching power supply