
5950 E Brown Rd, Mesa AZ 85205
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Largest single store Rockford Fosgate Dealer in U.S. since 2013
(480) 396-9003
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We accept Debit, Credit, and Financing with SNAP Finance,

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In addition to Debit and Credit cards we also accept financing through SNAP Finance.
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Before placing an order, please contact us at 480-396-9003 for fitment information on our products. Returns will not be accepted on orders where the fitment information is incorrect.

AP4CH21
Amplifier Integration Interface for Select Chrysler, Dodge, Jeep, and RAM vehicles with amplified sound systems
AmpPRO 4 Amplifier Integration Interface
AmpPRO simplifies the installation of upgraded amplifiers in data-bus-controlled amplified sound systems. With AmpPRO, you can improve audio performance while keeping an original radio’s fit, finish, and features.
Compatibility Note: This product is compatible with data-bus-controlled amplified systems only. To identify these systems, look for logos on door speakers, tweeters, dash speakers, or the subwoofer to confirm if the vehicle has a compatible amplified system: Alpine, Beats, or Harman Kardon. Vehicle manufacturers do not always brand compatible systems. Unbranded amplified systems are generally identified by locating a center channel speaker or subwoofer.
Benefits
- Simplifies amplifier installation
- It prevents the need for summing and DSP devices
- Provides factory sound system upgrade solution
Features
- It can be used to upgrade the entire sound system or just part of it, thanks to the original amplifier's retention.
- Enables the addition of a subwoofer system to the original sound system
- 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 uConnect, Bluetooth audio, and all warning chimes
- Plug & play installation
- Sublevel controller
- Optional TOSLINK optical output (APA-TOS1 sold separately)
Includes
AmpPRO module
22-pin harness (MS-CAN)
Bass knob
Knob harness
Manual
Also available for fast, easy install: APH-CH01 harness (sold separately)
APPLICATION GUIDE
| Year(s) | Make | Model | Trim Level | Additional Info |
|---|---|---|---|---|
| 2008-2016 | CHRYSLER | TOWN & COUNTRY | ALL TRIM LEVELS | — |
| 2008-2014 | DODGE | CHALLENGER | ALL TRIM LEVELS | — |
| 2008-2010 | DODGE | CHARGER | ALL TRIM LEVELS | — |
| 2009, 2011-2013 | DODGE | DURANGO | ALL TRIM LEVELS | — |
| 2008-2018 | DODGE | GRAND CARAVAN | ALL TRIM LEVELS | — |
| 2009-2012 | DODGE | RAM TRUCK | ALL TRIM LEVELS | — |
| 2008-2013 | JEEP | GRAND CHEROKEE | ALL TRIM LEVELS | — |
| 2007-2017 | JEEP | WRANGLER | ALL TRIM LEVELS | — |
| 2018 | JEEP | WRANGLER | JK | — |
| 2007-2017 | JEEP | WRANGLER UNLIMITED | ALL TRIM LEVELS | — |
| 2018 | JEEP | WRANGLER UNLIMITED | JK | — |
| 2010-2012 | RAM | RAM TRUCK | ALL TRIM LEVELS | — |
Get financed with SNAP Finance, and buy online.
Once approved SNAP will issue a virtual card number that you then use like a credit card
to make your online purchase.

