Amplifier Integration Interface for Select Chrysler, Dodge, Jeep, and RAM vehicles with amplified sound systems

$349.00 AP4-CH41
DISCONTINUED - Please see the AP4-CH41 R.2


Amplifier Integration Interface for Select Chrysler, Dodge, Jeep, and RAM vehicles with amplified sound systems

Installation Instructions

  • Download the latest version of the AmpPRO PC Application. It is VERY important that you use the latest version.
  • Download the latest version of our firmware.
  • Extract the firmware file and setup file from the .ZIP files that were just downloaded.
  • Connect the interface to the computer's USB port and install the update.

Detailed Instructions

  1. If this is the first time using the AmpPROPC Application, run and install “ampproexe”. This will install the PC Application onto the computer. The AmpPRO program will then install the update files from the computer to the interface.
  2. Open the AmpPROPC Application using the new shortcut created on your desktop.
  3. Connect the interface to the computer using a standard to micro USB
  4. Click the "Firmware" icon.
  5. Click “Select File” and browse to the new firmware file. The new firmware can be found where you saved it before beginning.
  6. Once the file is chosen the update will begin. When successful it will show the text "Update Completed".
  • Firmware Download, Version (Released on April 25th, 2019)
    Release Notes
    • Corrects issues seen with OEM treble slider in 2019 vehicles
  • Firmware Download, Version (Released on August 11th, 2017)
    Release Notes
    • Adds “Two Channel Mode” on Dip1
    • Fixes issues seen with Blind Spot and Collision warning chimes 
    • Reduces audio delay from ~14ms to ~1ms
  • Firmware Download, Version (Released on March 14th, 2017)
    Release Notes
    • Fixes issue found where front park sense chimes were not being retained when using TOSLINK output in Ram trucks.
    • Fixes issue where the EQ values were not being refreshed after coming out of sleep mode.
  • Firmware Download, Version (Released on February 14th, 2017)
    Release Notes
    • Fixes an issue found where some voice prompts were inconsistent
  • Firmware Download, Version (Released on January 27th, 2017)
    Release Notes
    • Initial Release
  • Utility/Other, Version 1 (Released on February 18th, 2021)
    Release Notes
    • Can be used for AP4 troubleshooting or for aftermarket amplifier gain setup
    • Contains the following test tones, all at 0dB
      • 20 Hz
      • 40 Hz
      • 100 Hz
      • 250 Hz
      • 350 Hz
      • 500 Hz
      • 1 kHz
      • 8 kHz
  • Utility/Other, Version V12 (Released on July 31st, 2018)
    Release Notes
    AmpPRO PC Application

DISCONTINUED - Please see the AP4-CH41 R.2

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.


  • Simplifies amplifier installation
  • Prevents the need for summing and DSP devices
  • Provides factory sound system upgrade solution


  • It can be used to upgrade the entire sound system or just part of it thanks to the retention of the original amplifier
  • 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)

AmpPRO module
52-pin harness (MS-CAN)
Bass knob
Knob harness

Also available for fast, easy install: APH-CH01 harness (sold separately)

How it works:

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