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PAC - Amplifier Integration Interface for Select Ford Vehicles with 8.4” Radio and Sony System - Black/Blue

Model: AP4-FD21
SKU: 5981701
Sold byBest Buy

About this product

Simplify amplifier installation in your Ford vehicle with this Amplifier Integration Interface by PAC. The AP4-FD21 eliminates the need for DSP and summing devices by providing a 6-channel preamp output so you can upgrade your amplifier without modifying the factory radio. This amplifier integration interface retains all audio from factory features and includes plug-and-play connections for easy installation.

Features
  • Compatible with select Ford vehicles equipped with 8.4” radios and Sony factory amplified audio systems

    Including 2015-2018 Edge, 2016 Escape, 2015-2017 Expedition, 2011-2018 Explorer, 2013-2017 F-150, 2013-2019 F-250, and 2013-2019 F-350 models.

  • Also compatible with 2013-2019 F-450, 2013-2019 F-550, 2012-2017 Focus, 2013-2016 Fusion, 2019-2020 Mustang, and 2013-2015 Taurus models for a customized fit.

  • Variable 5V RMS front, rear, and sub preamp outputs

    Features fading, balance, equalization, and level control capabilities.

  • Customized OE bass, mid, and treble center frequency selection

    Allows precision tuning.

  • Provides flat audio output

    For a solid audio foundation.

  • Retains audio from factory features

    Including SYNC, Bluetooth audio, safety warning chimes, parking sensor chimes, and navigation prompts.

  • Data-controlled remote amplifier turn-on

    Automatically powers the amplifier when the radio is turned on.

  • Enables subwoofer installation

    Allows you to add a subwoofer to the factory sound system and adjust sublevel with the included bass knob.

  • Optional TOSLINK optical output

    Provides a variable 2-channel fiber optic digital audio output when used in conjunction with APA-TOS1 (sold separately).

  • Plug-and-play installation

    For quick and easy setup.

See all features
Specifications
  • Brand
    PAC
    Model Number
    AP4-FD21
    Product Name
    Amplifier Integration Interface for Select Ford Vehicles with 8.4” Radio and Sony System
    Color
    Black/Blue
    Vehicle Compatibility
    Select 2011-2020 Ford vehicles equipped with 8.4" radios and Sony factory amplified audio systems
    Product Compatibility
    Amplifier
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Reviews

Rating 4.8 out of 5 stars with 9 reviews

5 star rating. 7 reviews4 star rating. 2 reviews
100% would recommend to a friend

Top Mentions

  • Installation (4)

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 4 out of 5 stars

    2016 Fusion Titanium W/Sony

    I first tried using a Audio Control LCI6I but it just didnt sound good at all and it had a noticeable hiss and the sound it produced was just lacking and man I was so dissapointed , So I wanted to try this PAC interface and luckily it was a deal of the day for $159 when I got it which made the decision easy. So I have had this installed for 1 year in my 2016 Fusion Titanium for little over a year and its running a 4 channel 100w RMS amp to Alpine Type R 6.5 components in front door and Type R 6x9s in rear deck and also 2 Rockville powered subs under front seats, the factory Sony amp is still running the rear door speakers and the center dash speaker, and it does what it says BUT 2 things I don't like are.. It says 4V or 5V pre-out but there's no way when compared to a aftermarket deck as I had exact same speakers and amps in a 2011 Fusion with a aftermarket Sony (2V pre-out) and a Pioneer (4V pre-out) deck and the volume at same amp gain was lot less than on my current 16 Fusion, the amp gains had to be turned up lot more to get near that volume. It also has a minor hiss when you have the stereo turned real low or in between songs etc.. but you don't notice it when playing music. Also its not this interfaces problem but the Sony deck doesn't put out great sound compared to an aftermarket deck but I didn't think it would, but it is something else that's noticeable. I do like that it has the 3 band EQ settings you can change and also that I haven't had ANY issues with it since installing it a year ago. And it bypasses the bass roll-off as far as I can tell and from what I read. If you want to run amps and subs then this is the best Interface or way to do it in my opinion and I am glad I got it instead of the AudioControl LCI6I or by using a speaker level to RCS convertor.

    Posted by David

  • Rated 5 out of 5 stars

    2018 Focus RS

    Works with the 2018 Focus RS' "premium" Sony system. Simple plug and play. Make sure to test if system turns on before screwing everything in the deck back in. It is the most expensive option out there to obtain an amplifier remote and audio-out but it is a clean install with NO impact to OEM system.

    Posted by JayDeeEm

  • Rated 5 out of 5 stars

    Stereo upgrade

    Perfect solution to car audio upgrade when keeping your Factory Ford, Sony head unit. Simple installation. Plug and play and simple to understand instructions.

    Posted by ClintA

  • Rated 5 out of 5 stars

    Great product

    It was easy to install, i Installed it my self and works great, is a bit pricey but worth it

    Posted by Pops10

  • Rated 5 out of 5 stars

    Works great

    Got this for me 2015 F-150 with the Sony system. Did exactly what it said it would and allowed me to integrate my 2 maps so I could finally install my system. I picked up the optional tos link so I could run optical to my dsp. No noise no matter where the dial is. Completely happy

    Posted by MrDuane

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Pros for PAC - Amplifier Integration Interface for Select Ford Vehicles with 8.4” Radio and Sony System - Black/Blue
InstallationQuality, Installation, Ease of use, Subwoofer, PowerEase of use, Installation, Sound Quality, Bass, PriceQuality, Installation, Ease of use, Wire Gauge

Specs

Questions & Answers
  • Is this Amplifier Integration Interface compatible with my 2016 Ford Escape?

    Yes, this interface is compatible with select Ford vehicles equipped with 8.4” radios and Sony factory amplified audio systems, including the 2016 Ford Escape.

    This question and answer was generated by AI based on customer and product data.
  • How does the interface handle amplifier turn-on?

    The amplifier is automatically powered on when the radio is turned on using data-controlled remote amplifier turn-on.

    This question and answer was generated by AI based on customer and product data.
  • Does this amplifier integration interface retain the factory features in my Ford?

    Yes, this interface retains all audio from factory features, including SYNC, Bluetooth audio, safety warning chimes, parking sensor chimes, and navigation prompts.

    This question and answer was generated by AI based on customer and product data.
  • What is the purpose of the flat audio output provided by this interface?

    The flat audio output provides a solid audio foundation for a sound system upgrade.

    This question and answer was generated by AI based on customer and product data.
  • Can I add a subwoofer to my factory sound system with this interface?

    Yes, this interface enables subwoofer installation and allows you to adjust the sub level with the included bass knob.

    This question and answer was generated by AI based on customer and product data.
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