PAC Audio APSUB-FD21 AmpPRO SUB Advanced Amplifier Interface for Select Ford vehicles 2011-2019 with Sony systems and 8.4" radio

Add a subwoofer. Upgrade your sound and keep your Ford factory radio Quickly and seamlessly add an aftermarket amplifier, improve audio performance, and retain radio fit, finish and features ADD AFTERMARKET SUBWOOFER Allows for addition and control of an aftermarket subwoofer amplifier CONTROL FROM FACTORY RADIO Like it came from the factory, but incredibly BETTER! PRESET AND EQUALIZED Designed for the best possible sound by integrating with and optimizing factory EQ settings  PLUG AND PLAY HARNESSES Allows for easy installation without permanent modification to the vehicle ABOUT AMPPRO SUB FOR FORD Integration with today’s advanced vehicle systems like databus controlled amplifiers can be difficult if not impossible. AmpPRO SUB products seamlessly integrate with the databus allowing for full control and optimum sound from a factory radio when adding aftermarket amplifiers. FEATURES Upgrade solution for factory, fixed level, data-bus controlled sound systems  Time-saving design, prevents the need for audio correction devices Subwoofer preamp output (5 volt RMS) Provides flat-low frequency audio output Customized OE bass center frequency selection Plug-n-play installation Remote sub level controller included INCLUDES Amplifier Installation Adapter Vehicle Specific Harness Flush Mount Sub Level Controller