Customer Reviews

PAC AmpPRO AP4-CH21 Aftermarket Amplifier Interface Allows seamless addition of an amplifier in select 2007-2016 Chrysler-made vehicles

MFR # AP4-CH21

6 reviews

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PAC AmpPRO AP4-CH21 Aftermarket Amplifier Interface

Terry from Volcano, CA on 9/19/2023

Verified customer

small, lightweight and easy to mount and plugs right in to the factory wiring harness.

PAC AmpPRO AP4-CH21 Aftermarket Amplifier Interface

Shawn from Fairhope, AL on 6/25/2023

2013 Jeep Wrangler Unlimited

Verified customer

Worked Flawlessly on my 2013 Jeep Wrangler JKU!!! Easy to Install!

2014 Jeep JKU Sahara

Ernest from Pearland, TX on 7/30/2022

2014 Jeep Wrangler Unlimited

Verified customer

Very simple amp upgrade with this interface and the optional Speaker Connection Harness APH-CH01 for my 2014 Jeep Wrangler Sahara Unlimited. Went with a Kenwood 5-channel amp, Mopar Kicker 10 speakers and retained the factory RES head unit. May upgrade the factory Alpine subwoofer at some point. Very pleased with the modest improvement.

Pros: Straight forward, easy install.

Cons: None so far

1 of 1 found this helpful

PAC AmpPRO AP4-CH21 Aftermarket Amplifier Interface

Crutchfield customer from Minot, ND on 5/28/2020

2012 Ram 1500

Verified customer

Product works great in my 2012 Ram. Very simple installation and setup. It was basically plug and go. Very happy with my purchase.

Pros: Plug and play. Simple setup

Cons: None as of yet

1 of 1 found this helpful

PAC AmpPRO AP4-CH21 Aftermarket Amplifier Interface

Crutchfield customer from North Augusta, SC on 5/26/2020

2014 Jeep Wrangler Unlimited

Verified customer

Exactly what I needed and works like a charm! Their customer service is excellent, they helped me with this purchase and I couldn't be more pleased! Thank you crutchfield!!!

2 of 2 found this helpful

PAC AmpPRO AP4-CH21 Aftermarket Amplifier Interface

Crutchfield customer from Los Angeles, CA on 11/7/2018

2013 Dodge Challenger

Verified customer

This works great except for the rear channels need to be switched. The right is playing the left speaker and the left channel is playing through the right speaker.

2 of 2 found this helpful

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