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AP4-FD21
Part Number:
AP4-FD21
Peripheral Part No: No Peripheral Equivalent
Category: Audio Interfacing

Product Overview
Advanced Amplifier Interface

MSRP: $299.95

**VERIFY YOUR VEHICLE**
Check Compatibility Notes Below

  • Compatibility Notes
  • Description & Features
  • Technical Docs
  • All Applications
Compatibility Notes

This interface is only compatible in vehicles equipped with a data bus controlled premium sound system. To verify compatibility, look for a Sony badge on the door speakers, center speaker, or factory sub woofer. If this brand is not shown, check for the presence of a center speaker or sub woofer.


Product Revision History

Current Revision #: 1.1.1.9 Description: Initial Release Release Date: 1-27-17


Product Status

Product Description
  • AmpPRO simplifies the installation of upgraded amplifiers in data-bus controlled sound systems. With AmpPRO, you can improve audio performance while keeping an original radio’s fit, finish and features.


Product Features
  • Variable volume, fade, balance, bass, mid and treble audio settings
  • Front, rear, sub preamp outputs (5 volt RMS)
  • Provides flat audio output for a solid audio foundation
  • Customized OE bass, mid and treble center frequency selection
  • Retains SYNC, Bluetooth audio and all warning chimes
  • Plug & play installation
  • Sub level controller
  • Optional TOSLINK optical output (APA-TOS1 sold separately)
  • Simplifies amplifier installation
  • Prevents need for summing and DSP devices
  • Provides factory sound system upgrade solution


Quick Reference Cards

Tech Briefs

Tech Tips


MakeModelYearCategoryProduct
FordEdge2017Audio InterfacingAP4-FD21
FordExpedition2016Audio InterfacingAP4-FD21
FordExpedition2017Audio InterfacingAP4-FD21
FordExplorer2014Audio InterfacingAP4-FD21
FordExplorer2015Audio InterfacingAP4-FD21
FordExplorer2016Audio InterfacingAP4-FD21
FordExplorer2017Audio InterfacingAP4-FD21
FordF-1502013Audio InterfacingAP4-FD21
FordF-1502014Audio InterfacingAP4-FD21
FordF-1502015Audio InterfacingAP4-FD21
FordF-1502016Audio InterfacingAP4-FD21
FordF-1502017Audio InterfacingAP4-FD21
FordF-2502013Audio InterfacingAP4-FD21
FordF-2502014Audio InterfacingAP4-FD21
FordF-2502015Audio InterfacingAP4-FD21
FordF-2502016Audio InterfacingAP4-FD21
FordF-2502017Audio InterfacingAP4-FD21
FordF-3502013Audio InterfacingAP4-FD21
FordF-3502014Audio InterfacingAP4-FD21
FordF-3502015Audio InterfacingAP4-FD21
FordF-3502016Audio InterfacingAP4-FD21
FordF-3502017Audio InterfacingAP4-FD21
FordFocus2016Audio InterfacingAP4-FD21
FordFocus2017Audio InterfacingAP4-FD21
FordFusion2016Audio InterfacingAP4-FD21