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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...

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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 (R.2)

What's in the box:

  • Amplifier integration interface module
  • T-harness
  • Speaker connection 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 (R.2) 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 (R.2), you can improve your vehicle's audio performance while keeping the original radio's fit, finish, and features.

  • Amplified Vehicles: Compatible with all data-bus controlled amplified systems, no matter the screen size (including the new 12" screen). 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; such as Alpine, Beats or Harman Kardon. Some vehicles may not always have branded compatible systems. Unbranded amplified systems are generally identified by locating a center channel speaker or subwoofer.
  • Non-Amplified Vehicles: If you are installing the AmpPRO in a vehicle that is not equipped with a factory amplifier, you must add an amplifier to the vehicle's speakers, as the factory radio will no longer have a 4 channel variable output after it has been re-configured by the AmpPRO. For example, this will not work to add only a subwoofer to a non-amplified vehicle, as the radio will no longer power the cabin speakers properly. Non-amplified vehicles equipped with an Active Noise Cancellation (ANC) system require the ANC module to be bypassed. This can be done manually or with the ANC bypass harness ANC-CH01 (sold separately - coming soon). Click here to see how to tell the difference between an amplifier and an ANC module and for module locations.

Note: 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.

Vehicle Compatibility: The PAC AmpPRO AP4-CH41 (R.2) 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


  • Jeep Cherokee, Chrysler 200, and Maserati vehicles must be equipped with a factory amplifier as the AP4-CH41 (R.2) cannot reprogram the factory radio to think that an amplifier is present.
  • In non-amplified vehicles, the AmpPRO is only compatible in vehicles equipped with the 7" or 8" factory radio screens; except for for the Jeep Wrangler and Gladiator which is supported for 5", 7", and 8" factory radio screen models.
  • 2019 Ram Trucks and 2017-2019 Pacifica vehicles have an ANC module that will need to be bypassed.

6Ch Pre-Outs: The PAC AmpPRO AP4-CH41 (R.2) provides a 6-channel pre-amp output for use with aftermarket amplifiers. Using the full-range, fixed level factory radio output the AP4-CH41 (R.2) 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 (R.2) 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 (R.2). 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 (R.2) 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 (R.2) 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 (R.2) 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 (R.2) 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

21 questions already asked

Difference between version 1 and 2?
[ Josh  Jan 16, 2021 ]
1 answer
I didn't know there was a version 1 and 2
[ Aaron  Jan 17, 2021 ]
I'm setting up a system in my Jeep JL with stock HU and adding AudioControl DM-608 DSP Audio Control LC-6.1200 Amp Alpine S-A60M Mono Amp Resistors for speaker wires (apparently necessary) New wiring to hi-output speakers and 1 12" sub What am I losing if I dont have a PAC AmpPro? Do I need the resistors if I have the AudioControl DSP?
[ Daniel  Dec 26, 2020 ]
2 answers
if you are using a dsp you shouldn't need resistors as long as you connect the dsp befor the stock amp, the amp pro does all of that in one package plug and play i havent had any issues and its running to 2x jl 12s and my rear doors
[ CHAD  Dec 29, 2020 ]
You won't lose anything The PAC is necessary if not installing a DSP. May be a bit more intensive to install HU straight to DSP, wire by wire. PAC comes with harness that plugs directly into factory HU harness and allows you to run cable to amps instead of speaker wire. That's all I can think of
[ Chris  Dec 29, 2020 ]
What exactly does Dip switch 1 do? It the manual it makes it non fading, but I guess I'm asking how does this effect output signal/gain/volume to amplifier?
[ MICHAEL  Dec 13, 2020 ]
1 answer
I used the TOSLINK connection module, and dipswitch 1 is what you set to ensure 2 channel output (L & R). This of course makes it non-fading, but you adjust db levels for each channel as well as individual EQ's for each channel as well, so that wasn't a factor for me.
[ Gary  Dec 28, 2020 ]
I have a 2013 ram 1500 with alpine system along with a Crux RVCCH-75D installed, which requires the t harness behind the head unit. Will this interfere with the ap4-ch41 or vice versa? Will I still be able to hook it all up?
[ MICHAEL  Oct 25, 2020 ]
1 answer
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question.
[ Calvin  Nov 25, 2020 ]  Staff
Will this work in the 2013 ram 1500 alpine system? The PAC website states it is compatible with my truck, but crutchfield states it will not?
[ MICHAEL  Oct 25, 2020 ]
3 answers
i am not sure, it worked on mine but i have a 2017 with alpine, their web site should be accurate it is their product it is a plug and play so you could try and if it doesn't work you can return it
[ CHAD  Oct 26, 2020 ]
Both the PAC site and Crutchfield sites look like the RP4-CH21 is the interface for a 2013 Ram. I'd call one or both to confirm though.
[ Steven  Oct 26, 2020 ]
Give PAC a call to verify, then order it. You can always return it to Crutchfield if it doesn't work.
[ TREVOR  Oct 25, 2020 ]
Will this work in the 2013 ram 1500 alpine system? The PAC website states it is compatible with my truck, but crutchfield states it will not?
[ MICHAEL  Oct 25, 2020 ]
2 answers
Hi, I have it on 2018 ram it work good. I don't know if will work on 2013, check for the harmed see if they are the same, if they are should work. hope this help you
[ wilfredo  Oct 26, 2020 ]
It says selected models 14 and up. It fit my 2017 dodge ram mega cab. I love it.
[ Aaron  Oct 25, 2020 ]
Will PAC AmpPRO AP4-CH41 Aftermarket Amplifier Interface work on 2020 RAM 3500 ?
[ Anthony  Oct 12, 2020 ]
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. If it does not, then they will also be able to discuss other options with you.
[ Calvin  Nov 05, 2020 ]  Staff
Has anyone had problems with their factory radio not coming on when the amp pro is connected?.. my factory harness works fine
[ Josh  Sep 17, 2020 ]
3 answers
You have to program it when you first install it. Did you do the stamps where you unlock your doors, turn inhibition on, turn off, lock doors and wait....etc etc? That programs it to your radio.
[ KENNETH  Sep 17, 2020 ]
i haven't had any problems i connected it directly with there supplied harness never used the one crutchfield sent that had to be wired in and i have had no issues
[ CHAD  Sep 17, 2020 ]
I think there is a video about this on YouTube. Incase you didn't do so, make sure you follow the correct sequence. Roll windows up, lock doors, etc.
[ Ken  Sep 17, 2020 ]
Would I absolutely need this product to install 6 aftermarket speakers and an aftermarket amp in 2020 jeep wrangler 4-door JL? 7" screen base system w/o sub. I have read that you need this or something similar to trick the Uconnect system into thinking the stock speakers are still installed. However, I have read this with Jeeps that do not have the new Uconnect system that the 2020 does.
[ Tyler  Sep 05, 2020 ]
3 answers
Your head unit works with the factory digital amp, this price bypasses the factory amp and all of the processing, to give you a true 4v output. With this piece you can still use the factory amp and speakers, or eliminate them all. Great for upgrading in small increments. Highly recommended!!
[ TREVOR  Sep 14, 2020 ]
As much as I understand it you will indeed need this or something similar. It stops the turn on "pop" sounds and the mids wouldn't play without it.
[ Paul  Sep 14, 2020 ]
I use it on my dodge work great, but you don't need it, because the amp the i buy have high input level the i could use from the speakers. I did not know when i buy this product. Help i help you Wilfredo
[ wilfredo  Sep 14, 2020 ]
Is this the PAC AmpPRO 4 AP4-CH41 R.2 and will it work in my 2019 RAM 1500 with factory alpine system?
[ Darrell  Aug 15, 2020 ]
5 answers
I just wanted to confirm what the others have said that this is the R.2 model. It also works in your 2019 Ram 1500's with the Alpine audio system!
[ Paul  Sep 05, 2020 ]  Staff
It is the R.2, check the PAC website for compatibility
[ Gregory Aaron  Sep 01, 2020 ]
[ David Lee  Aug 31, 2020 ]
Also my 2018 Ram 1500 does have the factory Alpine system. Or it did :)..
[ Jim  Aug 31, 2020 ]
I installed this in my 2018 Ram 1500 sport and it works fine. The only issue is high line voltage had to turn down the gain on the amps or I would get this fuzzy / distortion sound that was pretty loud from my highs and mids. The other thing I do not like about the PAC AmPro 4 AP4-CH41 R.2 is the lowest LP is 60Hz. Most amps will go down to 50hz LP or lower so this module cuts anything off below 60Hz (the deep bass). I would assume PAC audio can fix this with a software update but they haven't I even called and asked them.
[ Jim  Aug 31, 2020 ]
Just installed this on my 2019 JLU w/o premium sound system. Did all setup steps after install, sound only came out of sub and rear speakers and couldn't adjust the volume. In the troubleshooting section it says if that happen a powered amp is needed, so I installed a 4ch amp to factory speakers, now there is no sound whatsoever! Did I do something wrong?
[ Adam  May 03, 2020 ]
1 answer
You need to double-check the dip switches on the PAC AmpPRO. I would also recommend running your own speaker wire if you haven't done that already. I installed a 4-channel amp, (front and soundbar), along with this sub. (Also in a 2019 JLU Base System) Morel 603's upfront, kicker 2-ways in the soundbar. Head Unit > PAC AmpPRO - RCA from PAC AmpPRO to amp, RCA from PAC AmpPro to powered SUB. Speaker Wire - Speakers > amp Power - Battery > Distribution Block > 1 to amp, 1 to powered sub Ground - Scrape paint until you hit bare metal > distribution block > 1 to amp, 1 to powered sub I'd check the ground first, verify the screw holding the nut and cable are tight to the frame.
[ Thomas  May 28, 2020 ]
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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