Kenwood XR401-4 4-Channel Amplifier – 100W x4 Compact Class D Full-Range Amp PMX-2 This is where you start

This is where you start getting real usable volume in open-air environments

Works with ~90% of vehicles with standard interface

the speakers are driven properly and cut through wind and road noise

Class-AD technology with Constant Power output

Glass fiber woofer cones

Kenwood XR401-4 4-Channel Amplifier – 100W x4 Compact Class D Full-Range Amp PMX-2 This is where you startKenwood XR401 4 4 Channel Amplifier 100W x4 Compact Class D Full Range Amp The Kenwood XR401 4 is a compact 4 channel amplifier designed to bring your door speakers to life. With up to 100 watts per channel, it delivers clean, controlled power that makes a noticeable difference over factory audio. Key Features: Class D 4 channel amplifier 100W x4 @ 2 75W x4 @ 4 Variable high pass and low pass filters Speaker level inputs (factory system compatible)