The Audison Prima AP4 D is a compact 4-channel Class D car amplifier built for seamless integration with modern vehicles. Its efficient Class D topology provides solid performance while minimizing heat and current draw.

AP4 D accepts speaker-level and RCA inputs, supports automatic turn-on from factory sources, and offers bridgeable channels with selectable high-pass and low-pass filtering for flexible system configuration with front and rear speakers or paired channels.