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PAC AmpPRO AP4-CH41 Aftermarket Amplifier Interface

Allows seamless addition of an amplifier in select 2014-up Chrysler-made vehicles

Item # 541AP4CH41

You can make a less-than-ideal factory system actually sound premium by replacing the weak factory amplifier with a...

Find what Fits your car

You can make a less-than-ideal factory system actually sound premium by replacing the weak factory amplifier with a...

Item # 541AP4CH41

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About the PAC AmpPRO AP4-CH41 Aftermarket Amplifier Interface

Your amp will sound better than the factory system

You can make a less-than-ideal factory system actually sound premium by replacing the weak factory amplifier with a more powerful aftermarket amp. PAC's AmpPRO interface consists of a module and a vehicle-specific T-harness that make the job much easier. Now, you can install an amplifier of your own without losing any of your vehicle's factory audio features like warning chimes, navigation prompts, and Bluetooth functions.

Your amp will sound better than the factory system

You can make a less-than-ideal factory system actually sound premium by replacing the weak factory amplifier with a more powerful aftermarket amp. PAC's AmpPRO interface consists of a module and a vehicle-specific T-harness that make the job much easier. Now, you can install an amplifier of your own without losing any of your vehicle's factory audio features like warning chimes, navigation prompts, and Bluetooth functions.

Simple to install

The package's T-harness plugs into the factory radio and vehicle harness. The small module fits behind the dash, converting your radio's speaker outputs into six preamp-level outputs ready for connection to your amp. The factory radio controls, such as volume, balance, and fade, will work as before for your front and rear speakers. A separate wired remote level control lets you adjust the volume of the subwoofer channels from your front seat. An optional add-on module, PAC's APA-TOS1 adapter, provides an optical digital output for your high-end digital processors and amplifiers to handle.

An app for tweakers

After downloading the AmpPRO PC App and connecting to your Windows-run PC via USB, you can access the factory 3-band parametric equalizer (EQ) and customize the tone of your system to perfection. The app also lets you adjust chime volume, the system's minimum volume level, and update the product firmware when needed.

Important Note: This AmpPRO interface simplifies the installation of a car amplifier (not included). You'll also need to purchase anything required to install your new amp: an amp wiring kitspeaker wire (to replace factory wiring), and RCA cables


Product highlights:

  • amplifier replacement module and T-harness
  • works with select 2014-up Chrysler, Dodge, Jeep, RAM, and Maserati vehicles
  • 6-channel RCA outputs (front, rear, subs)
  • switchable 5- or 4-volt RMS output
  • retains factory radio controls and audio features
  • wired remote level control for sub channels
  • remote turn-on lead for amplifiers
  • AmpPRO PC App, available from PAC, lets you adjust minimum and chime volumes and 3-band EQ via your Windows-run PC
  • optional TOSLINK adapter provides digital output
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # AP4-CH41

What's in the box:

  • Amplifier integration interface module
  • T-harness
  • 6' Rotary-knob cable
  • Rotary-knob
  • Installation Instructions

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More details on the PAC AmpPRO AP4-CH41 Aftermarket Amplifier Interface

Stacey B.

Product Research


Amplifier Integration Interface: The PAC AmpPRO AP4-CH41 simplifies the installation of aftermarket amplifiers in select Chrysler, Dodge, Jeep, & Ram vehicles, both with and without factory amplifiers. (Please enter your vehicle information to confirm compatibility.) With the AmpPRO AP4-CH41, you can improve your vehicle's audio performance while keeping the original radio's fit, finish, and features.


  • The factory radio and factory amplifier (when equipped) must remain connected in the vehicle and be operational in order to use the PAC AmpPRO interface.
  • If you are only using the PAC AmpPRO interface to add a subwoofer amplifier, the factory amplifier will still power the other speakers in the vehicle.

Vehicle Compatibility: The PAC AmpPRO AP4-CH41 amplifier integration interface is compatible with select versions of the following 2013-2018 Chrysler, Dodge, Jeep, & Ram vehicles.

Make Model Year
Chrysler 200 2015-2017
300 2015-2019
Pacifica 2017-2019
Dodge Challenger 2015-2019
Charger 2015-2019
Durango 2014-2019
Jeep Wrangler (JL) 2018-2019
Wrangler Unlimited (JL) 2018-2019
Gladiator 2020
Cherokee 2015-2019
Grand Cherokee 2014-2019
Maserati Levante 2018
RAM 1500 2013-2019
2500 2013-2019
3500 2013-2019

6Ch Pre-Outs: The PAC AmpPRO AP4-CH41 provides a 6-channel pre-amp output for use with aftermarket amplifiers. Using the full-range, fixed level factory radio output the AP4-CH41 delivers a variable 5V RMS pre-amp output with fading, balance, equalization, and level control capabilities.

Non-Fading Level Control Knob: Channels 5-6 (Sub) of the AP4-CH41 are non-fading outputs. The output level of channels 5-6 can be controlled using the supplied level control knob. The level control knob comes with a 6' cable which plugs into the interface module and should be mounted in an accessible location.

Data Controlled Remote Turn-On: A data controlled remote amplifier turn on wire is also provided by the PAC AmpPRO AP4-CH41. The remote turn-on current is rated at 2-amps. If more current is needed an external relay must be used.

Retained Factory Audio Features: The PAC AmpPRO AP4-CH41 also retains all audio from other vehicle features such as factory Navigation Prompts, Bluetooth, uConnect, and Warning Chimes.

Minimum & Chime Volume: If the minimum volume of your factory radio is too loud once the AP4-CH41 is installed, you can manually set the level of the minimum volume using either the programming button on the side of the interface or the factory SWC (Steering Wheel Controls) in conjunction with the supplied level control knob. You can also use AmpPRO PC app. You can also adjust the chime volume level.

AmpPRO PC App: Using the AmpPRO PC App (for Windows PC only) allows you to configure user interface options such as Minimum Volume Level, Chime Volume Level, and a 3-Band EQ from your Windows computer or laptop. The app can also be used to update product firmware.

  • Minimum & Chime Volume Level: From the app you can set the minimum volume level of the factory radio, as well as the chime volume level.
  • 3-Band EQ: Enables the 3-band EQ (Bass-Mid-Treble) with frequency and Q-factory adjustment. The Bass Frequency can be set to 60, 80, 100, or 120Hz; while the Bass Q-Factor can be set to 0.5, 1.0, 1.5, or 2.0. The Mid Frequency can be set to 500, 1k, 1.5k, or 2.5k; while the Mid Q-Factor can be set to 0.75, 1.0, 1.25, or 1.5. The Treble Frequency can be set to 7.5k, 10k, 12.5k, or 15k; while the Treble Q-Factory can be set to 0.75 or 1.25.
  • Firmware: The AmpPRO app will also allow you to update the interface with new firmware as it becomes available.
Note: These AmpPRO PC App settings can be adjusted with the module installed in the vehicle or on the bench. However, it is recommended to make the adjustments with the module installed, and the factory radio on so that the changes can be heard.

Dip Switch: Set dip switch 2 to "ON" to lower the RCA output voltage to 4V. Set the dip switch 2 "OFF" to keep the RCA output voltage at 5V. Dip switches 1-3-4 are not used.

Optional Toslink Add-On Module: When used in conjunction with PAC's APA-TOS1 (541APATOS1; sold separately), the AP4-CH41 can provide a variable 2-channel fiber optic digital audio output (toslink). Toslink fiber-optical cable also sold separately.

Optional Amplifier Harness: The APH-CH01 installation harness (541APHCH01, sold separately) simplifies speaker wire connections when using one the PAC AmpPRO AP4-CH41 to add an aftermarket amplifier or amplifiers in select vehicles that feature factory amplified sound systems. The APH-CH01 keeps you from having to cut or modify your vehicle's original factory wiring, providing "plug-n-play" connection at the vehicle's original factory amplifier location (you will need to make hardwire connections at the aftermarket amplifier/s).

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Customer Q&A

Crutchfield asked: Why did you buy this?
Easiest way to set up my ram with an aftermarket amp when you have the alpine premium system. [ RICKY  Nov 06, 2019 ]
This will help me keep the stock radio, which is basically the brains of the truck. Now I can completely upgrade my stereo system while keeping everything looking stock. [ The Engineer  May 02, 2019 ]
My 2018 Jeep Grand Cherokee Trackhawk has the Harmon Kardon system. The sound is really good but lacks the low end bass that I am used to. The factory subwoofer is one of those paper cone woofers that really doesn't do the job. I use the PAC AmpPRO AP4-CH41 to easily add a JL Audio JX 500/1D amplifier to power the JL Audio Stealthbox 10" W3v3 subwoofer for Jeep Grand Cherokee. I had the same system in my 2014 Jeep Grand Cherokee SRT and loved it. [ JASON  Mar 18, 2019 ]
My research lead me to believe that this would be the easier way to go to interface with the factory radio and aftermarket amp. [ Carlos  Nov 14, 2018 ]
Got to have it to connect new sub [ Ernest  Oct 15, 2018 ]
car bus interface between factory radio and after market digital sound processor / amp (Aline PXE0850S) to new speakers [ kevin  Sep 21, 2018 ]
Better signal to my amps in my 2016 RAM 1500 [ Jeremy Hornback  Aug 24, 2018 ]
Ease of installation of an aftermarket system to an OEM head unit in a Dodge Charger [ B  Mar 31, 2018 ]
Easiest way to add an amplifier to a 2017 Ram 1500 with the Alpine system. [ Van Ingle  Nov 03, 2017 ]
Better option than running a line out converter and gives a full signal [ C  Jul 19, 2017 ]

9 questions already asked

Will this work in a 2016 Dodge ram 2500 with the 9 inch stereo?
[ DANIEL  May 15, 2019 ]
2 answers
To be sure I would consult the PAC website, but I also pack 9"... of stereo in my 2015 Jeep and it works...
[ Craig  May 15, 2019 ]
I don't see why not. You need this if you are keeping the factory radio. I had a 2015 Powerwagon with the 8.4 nav head unit and my aftermarket subs sounded great.
[ jason  May 15, 2019 ]
Using this Interface can you add only a subwoofer amp while retaining the rest of the system? Will/can the Mids and Highs still function on the factory amp? Only thing I want to upgrade is a Subwoofer setup with amp.
[ Jared  May 09, 2019 ]
5 answers
Yes, that is exactly what I did. I will be adding another amplifier at another time.
[ Edward  May 25, 2019 ]
Yes you can, this is the best way to do that as it give a true 5v or 4v pre amp output to aftermarket amp. Also a clean 20hz to 20khz signal, with no bass roll off. This will also allow you to adjust bass/mid/treble center frequency and "Q" factor. PAC & Crutchfield customer service is top notch if you have install issues as well.
[ BRANDON J  May 25, 2019 ]
Yes you can, just follow the wiring diagram that comes with it and leave those speakers hooked up to the original amp. I left my three dash speakers hooked up to the original amp so that my navigation would still come through them.
[ Don  May 24, 2019 ]
This may not be a direct answer but it's what i was given and was glad i was convinced. The nice folks at crutchfield advised me to replace mids highs and the amp along with the new sub w/ amp. They said I won't be satisfied with only replacing sub and amp. Like I said I'm glad I did as my truck is transformed as the way I want it to sound now: You're spending the money so do it right . I also went away with the dash speakers and installed kenwood 7" mids for the door and put tweeters in the little door jam. If you want I can email you what I did
[ Will  May 24, 2019 ]
If you have the factory amp 5 channel it won't work
[ Stella  May 24, 2019 ]
How long is 1) the wiring harness, 2) the volume control knob wire? Thanks.
[ The Engineer  Dec 19, 2018 ]
5 answers
This harness connects to the head unit and the factory harness. It's about 16".
[ William  Dec 20, 2018 ]
I think the head-unit to PAC AmpPro harness is about 18" and the remote volume knob is about 3'. I mounted the interface in the dash to the right of the head-unit and ran the knob down under the steering column on a 2016 Dodge Challenger.
[ Dale  Dec 19, 2018 ]
The wiring harness is roughly 14 to 16 inches pulled taught. Connected to everything it coils up nicely. If I remember correctly the volume control knob was 18 inches long. No more than 3ft though. I installed mine in the glove box, so there was plenty of slack. Great buy. I run two amps. 1@ 2600 watts for S.A. 12"s and the other runs two sets of components I installed as well. Hope this helps.
[ Ryan  Dec 19, 2018 ]
The wiring harness is plenty long~18" or so. The Volume control knob is not for volume but for bass level of the subwoofer. The cable is ~6' if memory serves correctly.
[ Craig  Dec 19, 2018 ]
Wire harness is approximately 18 inches long maybe a little longer and the volume control wire is between 3 and 4 ft. I do not remember exactly but it is pretty long.
[ ADRIAN  Dec 19, 2018 ]
If I use this in 2015 Charger with Beats can I replace the factory speakers with component speakers and use the included crossover, or do I have to use 2 or 3 way speakers?
[ BLUHEMI  Nov 10, 2018 ]
1 answer
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate as well as the other options that would be available.
[ Kenny  Nov 10, 2018 ]  Staff
Does this get rid of the bass roll off at higher volumes?
[ Shawn  Jul 28, 2018 ]
1 answer
Yeah. Zero distortion pending you have your gains and frequencies setup right.
[ jeff  Jul 31, 2018 ]
I have a 2016 Dodge Challenger Hellcat with the Harman Kardon stereo. How does this unit deal with the center channel? Does this unit put out full range signals to the right/left/front/back outputs? If I decide to use the TOS link instead of the RCA cables, are the output options the same? thanks!
[ Tom  Jul 17, 2018 ]
2 answers
I have a 2015 Dodge Ram crew cab with the 8.4 Uconnect, which is a Harman Kardon touch screen head unit, and the 9 speaker Alpine system. I used this device to basically get four full range RCA speaker outputs, front and rear, left and right. As far as my aftermarket subwoofer I let the amplifier crossover and gain control it, a Alpine PDX v9 5-channel amplifier with subwoofer remote. This device doesn't help you with the center Channel, I left mine hooked up to the factory amplifier, which I can barely hear over my new aftermarket system. And from the research I've done the toslink performs the same way as the RCA cables but I do not use the toslink at this point. So far this device works as advertised and with a laptop you can make changes to your equalizer frequencies and is firmware upgradeable with no loss of parking chime alerts or voice navigation prompts. After hours of research I came to the conclusion that this was the best way to sum the signals and achieve full range outputs for a aftermarket amplifier, due to the complexity of these newer Chrysler premium audio systems. Good luck and I hope this helps
[ Jimmy  Jul 18, 2018 ]
On the Challenger I installed this on it had the sound group II audio without the center channel, but this is an inline "T" device and should continue to work with the factory amp and center channel should get the signal from the factory amp. This unit puts out variable volume full range signals over the RCA's for the left / right / front / back with additional left and right for the sub if you use a 6 channel amp. I am not using the TOS link but I believe the documentation says it is only 2 channel which is intended for other digital processors before being connecting to amps. I think the instructions also say to leave the factory amp installed or it will not work right.
[ Dale  Jul 17, 2018 ]
So I take it this will work with 2017 challenger with 6 speaker alpine?
[ Matt9670  Jun 15, 2018 ]
4 answers
Works perfectly with a clean signal output and no noise.
[ ROBERT  Jun 16, 2018 ]
Yes, it will work.. and it's easy to install..
[ ADRIAN  Jun 16, 2018 ]
Yes..I have 2017 charger with 6 great.
[ TheGovenor  Jun 16, 2018 ]
It works well with my Jeep but what you could do to be on the safe side is go to the pac website and it tells you which cars it's compatible with
[ LUIS I  Jun 16, 2018 ]
I'm interested in an aftermarket amp and and subwoofer for a 2016 Chrysler 300C and want to avoid cutting any wires and losing factory system functionality, if possible. Will this module allow me to upgrade the factory amp, add a subwoofer and keep all Chrysler functions? Thank you.
[ Curtis  Jun 03, 2018 ]
1 answer
As long as your '16 Chrysler 300c is equipped with a data-bus controlled factory premium sound system, the PAC AmpPRO AP4-CH41 adapter will allow you to add an aftermarket amp while retaining the original radio's fit, finish, and features. For more details or to discuss further please contact an Advisor directly by phone (888.955.6000) or online chat. Thanks!
[ Larry  Jun 11, 2018 ]  Staff
What are the trade-offs when using in a 2106 Dodge Durango w Beats premium audio? Will phone calls use all the same speakers, or just center channel?
[ bruce  Aug 23, 2017 ]
1 answer
Any speakers still connected to the stock amp will continue to work. This piece will get the Bluetooth audio as well and typically mixes that to the LF speaker. Feel free to contact an advisor on 1-800-324-9695 for personal recommendation on a system My Bio:
[ Paul  Aug 28, 2017 ]  Staff

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