Today's modern vehicle audio systems are becoming increasingly more sophisticated and complex. PAC(R) Audio engineered this AmpPRO4 Interface to improve your vehicle's audio performance while keeping the original radio's fit and finish. The AP4-FD32 simplifies the installation of upgraded amplifiers in select Ford(R) vehicles with B&O A2B factory amplified systems. This amplifier integration interface also allows you to retain important factory features and provides navigation outputs. It also comes with a sublevel controller. Please note the factory amp must be removed from the vehicle while installing this interface. It is not compatible with 2025+ Explorers and Expeditions.