Kenwood KAC-6403 car power amplifier. Key features:

It's a 4/3/2 channel amplifier with a maximum power output of 500W.

It has a built-in variable low-pass and high-pass filter.

The amplifier features a die-cast aluminum heat sink for cooling.

It supports both line and speaker level inputs.

The rated power output is 60W x 4 at 2 ohms.

It's designed to enhance the audio experience in a vehicle by amplifying the sound signals.