Today's modern vehicle audio systems are becoming increasingly more sophisticated and complex. PAC Audio engineered the AmpPRO 4 Interface for Ford and Lincoln 2010 to 2014 vehicles to dramatically simplify the installation of upgraded amplifiers in databus-controlled amplified sound systems. AmpPRO allows you to keep the original radio's fit, finish, and features while giving you the freedom to improve the audio performance in record time! The module also retains all audio from other vehicle features such as factory Bluetooth and all warning chimes. When used in conjunction with the APA-TOS1 (sold separately), the module can provide a TOSLINK audio output.