10 Best Aftermarket Amp Interface Adapters – Of 2022

If you are looking for a product that can help make your life simple, you have come to the right place. The market is filled with different types of products that vary in features and specifications. Choosing the right aftermarket amp interface adapters can be a hassle. The following guide will help you choose the aftermarket amp interface adapters that best suit your needs.

We all want to pick a beautiful, sturdy, and durable product, but there are so many products available in the market that it can be confusing to choose one. This article will help you choose the right aftermarket amp interface adapters more easily.

10 aftermarket amp interface adapters: Editor Recommended

10 aftermarket amp interface adapters Review:

1. Car Radio Stereo Hi to Lo High Low Speaker Level RCA Line Converter with Gain Control Amp Adapter Interface Drop OEM Wiring to Aftermarket Amplifier

Features :

  • For those wanting to retain Factory Radio
  • Provides an Aftermarket Amplifier with a low volt RCA Audio
  • Converts Watts ranging from 10 to 40 watts per Channel
  • Adjustable output

2. Add an Amp Amplifier Adapter Interface to Factory OEM Car Stereo Radio System for Select Infinit Nissan and Subaru Vehicles- Add Subwoofer Bass Amp – Important: See Compatible Vehicles Listed Below

Features :

  • Add an amplifier to OEM system- Prevents cutting factory wires- Plugs to back of radio
  • Use this adapter to make your installation of an amplifier to the factory system faster with a cleaner install. Use this plug and play adapter so you don’t have to cut or splice into the factory wiring. Provides RCA output and a power wire for the remote amplifier turn on connection.
  • Adjustable gain output. Not compatible with factory amplified stereo systems. Only works with factory non-amplified systems (no JBL/Synthesis, Bose, etc.). Note: This adapter hasn’t been tested with Bose/premium amplified systems but it might work.
  • Compatible vehicles: Infiniti: 2011-2012 G25, 2008-2013 G37; Nissan: 2010-2019 370Z, 2007-2018 Altima, 2008-2015 Armada, 2009-2014 Cube, 2009-2011 Frontier, 2012 Frontier (S trim/base model only), 2013-2018 Frontier, 2011-2017 Juke, 2018-2019 Kicks, 2012-2019 Leaf, 2007-2019 Maxima, 2009-2019 Murano, 2012-2019 NV, 2013-2018 NV200, 2008-2012 Pathfinder (No S model), 2013-2016 Pathfinder, 2011-2016 Quest, 2008-2018 Rogue/Rogue Select/Rogue Sport, 2007-2018 Sentra,
  • 2008-2012 Titan (S trim/base model only), 2013-2019 Titan, 2016-2019 Titan XD, 2007-2018 Versa, 2014-2019 Versa Note, 2014-2015 Xterra; Subaru: 2009-2015 Forester without OE Nav, 2008-2014 Impreza/WRX without OE Nav, 2010-2011 Legacy without OE Nav, 2010-2011 Outback without OE Nav, 2013-2014 XV Crosstek without OE Nav

Additional Info :

Item Dimensions
Height 3
Width 7
Length 7
Weight 1

3. Add A Bass Subwoofer Amplifier Adapter Interface w/Amp Remote Wire to Factory OEM Car Stereo Radio for select VW Made for Jetta Golf CC Passat EOS Tiguan etc- Vehicles listed below

Features :

  • Use this adapter to make your installation of a subwoofer bass amplifier to the factory system faster with a cleaner install. Use this plug and play adapter so you don’t have to cut or splice into the factory wiring. Provides rca output and a power wire for the remote amplifier turn on connection. Adjustable gain output.
  • Time saver- Connection is done at back of radio.
  • Plug in installation retains factory wiring integrity. Linear 20-20,000Hz sound reproduction based on input signal.
  • Compatible Vehicles: VW: 2012-2015 Beetle, 2009-2014 CC, 2007-2011 EOS, 2003-2014 Golf/GTI, 2003-2015 Made for Jetta, 2003-2015 Passat, 2006-2009 Rabbit, 2009-2015 Tiguan

Additional Info :

Item Dimensions
Height 3
Width 6
Length 6
Weight 0.4375

4. Custom Install Parts Factory Amp Interface with Wire Harness Cable Plug & Antenna Adapter Compatible With Volvo (850 S40 S60 S70 S80 S90 C70 V40 V70 XC70 XC90)

Features :

  • Aftermarket Radio To Factory Amp
  • Compatible When Replacing Select Factory Radios

Additional Info :

Item Dimensions
Height 1
Width 5
Length 8

5. PAC SNI-35 Variable LOC Line Out Converter

Features :

  • Adjustable Line Output Converter
  • Use the SNI-35 when adding an amplifier to a factory radio to convert the radio’s speaker level output to the lower amplifier (RCA) level input
  • Utilize Audio Transformer for Noise Isolation
  • Phase Adjusted

Additional Info :

Color Black
Item Dimensions
Height 1
Width 4
Length 1
Weight 0.15
Release Date 2016-05-12T00:00:01Z

6. RED WOLF T-Harness Wiring Adapter OBD2 Plug Connector to Retain OEM Factory AMP Amplifier Replacement for Jeep Wrangler Chrysler Dodge Ram 2007-2018 Select Models

Features :

  • Compatible with Alpine, JVC, Kenwood, Pioneer to Retains Uconnect with voice command and the factory satellite. Replacement for iDatalin ADS-HRN(AV)-CHR01 adapter to retain use of Rear Seat Entertainment (RSE) monitor.
  • Keep Your Factory AMP. Compatible with 2006-2013 Chrysler 200, Chrysler 300 2005-2007, Chrysler 300C 2005-2007, Chrysler Grand Voyager 2001-2007, Chrysler PT Cruiser 2000-2005, Chrysler Sebring 2002-2006, Chrysler Town and Country 2002-2007.
  • Replacement For: 2002-2010 Dodge Ram 1500/2500/3500,Dodge Caravan 2002-2007, Dodge Viper 2006-2010, Dodge Intrepid 2002-2004, Dodge Durango 2002-2003, Dodge Dakota 2002-2007. 2008-2010 Dodge Charger, 2006-2013 Dodge Avenger. Compatible with Jeep 2007-2010 Commander, 2008-2011 Grand Cherokee, 2008-2011 Liberty, 2008-2017 Patriot, 2006-2018 JEEP Wrangler, 2009-2013 Rubicon.
  • It also has an OBD2 port connector to allow your head unit to display vehicle data if that capability exists in the particular head unit you purchased.
  • It allow to install a new interface unit ADS-MRR module to Retains your steering wheel.

7. Add An Amp Amplifier Adapter Interface to Factory OEM Car Stereo Radio System for Select Vehicles – Add Subwoofer Bass Amp etc.- No Factory Premium Amp- Compatible Vehicles listed below

Features :

  • Use this adapter to make your installation of an amplifier to the factory system faster with a cleaner install. Use this plug and play adapter so you don’t have to cut or splice into the factory wiring. Provides one pair stereo rca output and a power wire for the remote amplifier turn on connection. Adjustable left and right gain output.
  • VERY IMPORTANT—-PLEASE READ BEFORE PURCHASE—- Not compatible with factory amplified stereo systems like JBL, Bose, etc. Only works with factory non-amplified systems (no JBL/Synthesis, Bose, etc.). Connection is done at back of radio.
  • Adapter made for Scion: 2013 – 2016 FR-S, 2012 – 2015 iQ, 2005 – 2016 tC, 2004 – 2006 xA, 2004 – 2015 xB, 2008 – 2014 xD;
  • Adapter made for Toyota: 1988 – 2017 4-Runner, 1987 – 2017 Camry, 1999 – 2009 Camry Solara, 1986 – 2006 Celica, 1987 – 2019 Corolla, 1987 – 1992 Cressida, 2000 – 2006 Echo, 2007 – 2014 FJ Cruiser, 2001 – 2016 Highlander, 1987 – 2002 Land Cruiser, 2005 – 2010 Matrix, 1987 – 1995 MR2, 2000 – 2006 MR2 Spyder, 1992 – 1997 Paseo, 1987 – 1995 Pickup, 1991 – 1997 Previa, 2001 – 2018 Prius, 1996 – 2016 RAV4, 2001 – 2016 Sequoia, 1998 – 2016 Sienna, 1986 – 1998 Supra, 1993 – 1998 T-100,
  • 1995 – 2016 Tacoma, 1987 – 1998 Tercel, 2000 – 2018 Tundra, 1987 – 1990 Van, 2009 – 2015 Venza, 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Yaris

Additional Info :

Item Dimensions
Height 3
Width 7
Length 7
Weight 1

8. RED WOLF HRN-RR-TO2 T Harness Car Radio Factory Integrate Wiring Adapter for Toyota 2012-2019 Non JBL System Retain Steering Wheel Control AMP Interface Fit Meastro ADS-MRR Module Aftermarket Stereo

Features :

  • Non-JBL only. RED WOLF T harness help to retain steering wheel controls and factory amp Amplifier. Also retain your factory backup camera when install a aftermarket radio. Please contact us if you receive a wrong package.
  • Harness RR-TO2 allows installation of a new car stereo for your toyota vehicle. Recommend to use in Maestro -ADS-MRR module install (requires a Maestro-RR to work).
  • Install an aftermarket car stereo receiver and retain mostly OEM features and audio system, but the plugs would need to be removed or cutting and hardwired.
  • Retains select factory radio features and performance data on touchscreen with select Alpine, JVC, Kenwood and Pioneer aftermarket receivers.
  • Compatible With Non-JBL 2010-2018 Toyota Tundra,2013-2019 Toyota Tacoma, 2012-2019 Toyota 4Runner, 2013-2016 Toyota Venza, 2014-2018 Toyota Corolla, 2014-2018 Toyota Sienna, 2015-2018 CHR, 2017 Prius prime plus. 2016 -2017 Toyota Camry, 2013-2015 Toyota Prius V, 2015 – 2018 Avalon, 2012-2017 Camry, 2012 – 2014 FJ-Cruiser, 2014 – 2018 Highlander, 2013 – 2018 RAV4, 2016 – 2019 Sequoia

9. Factory Radio Amp Amplifier Subwoofer Interface Wire Harness with Inline Converter Compatible with Ford 2011-2018

Features :

  • This adapter used to add an amp or sub to your factory system.With inline converter. Fully adjustable gain control.
  • The harness provides a connection for one set of RCA cables to provide an audio signal to an external amplifier.
  • Plug and play, you can install it more simply without having to cut or splice into the factory wiring.
  • Package included :1 x wire harness, 1 x Add-A-Circuit fuse tap, 1x 3 Amp fuse (show as the picture), Installation Instruction Not Included.
  • Compatible with Ford F-150 /250/350/450/550 Edge Explorer Escape Fiesta Focus Mustang Transit.(Check out the details page for details on fitment models and years.)

Additional Info :

Color Green


Features :

  • Provides accessory power (12-volt 10-amp)
  • Designed for amplified systems ONLY
  • Retains chimes and balance and fade
  • Provides NAV outputs (parking brake, reverse, mute, and speed sense)
  • Pre-wired ASWC-1 harness (ASWC-1 sold separately)
  • Retains OnStar/OE Bluetooth
  • Adjustable gain control for chimes and OnStar
  • High-level speaker input
  • USB updatable
  • Contact Metra’s Tech Support for further assistance
  • This product fits the following vehicles:Allure 2005-2009Lacrosse 2005-2009Rainier 2004-2007Rendezvous 2002-2007Terraza 2005-2008Century 2004-2005
  • CADILLAC Escalade 2003-2006Escalade EXT 2003-2006
  • CHEVROLET Avalanche 2003-2006Cavalier 2000-2005Colado 2004-2009Corvette 2005-2011Express van (full size) 2003-2007Impala 2000-2005Malibu (2004-05 Classic only) 2001-2005Monte Carlo 2000-2005Silverado Pickup Classic 2007-2007Silverado Pickup (all models) 2003-2006SSR 2003-2006Suburban 2003-2006Tahoe 2003-2006Trailblazer 2002-2009Uplander 2005-2008Venture Van 2000-2005
  • GMC:Canyon 2004-2010Envoy 2002-2009Savanna Full Size Van 2003-2007Sierra (Classic) 2003-2007Yukon / Yukon XL / Denali 2003-2006
  • HUMMER:H2 2003-2007H3 2006-2009
  • ISUZU:Ascender 2003-2008I290 2007-2008I280 2006-2006I370 2007-2008I350 2006-2006
  • OLDSMOBILE:Alero 2001-2004Bravada 2002-2004Intrigue 2002-2002Silhouette 2000-2004
  • PONTIAC:Aztec 2001-2005Grand Am 2001-2005Grand Prix 2004-2008Montana 2000-2005Sunfire 2000-2005
  • SAAB: 9-7x 2005-2009Saturn Relay 2005-2007
  • USB update interface compatible,For amplified audio systems premium and Bose
  • Retains Onstar w/adjustable volume output, Retains chime with adjustable volume output
  • Retains RAP feature, Navigation outputs now included

Additional Info :

Color Multi Color
Item Dimensions
Height 2.5
Width 6.75
Length 9
Weight 0.02

Buying Guide: What To Look For When Select aftermarket amp interface adapters: 

If you want to purchase products, follow a buying guide. Some features need to tick your products before buying. Let’s take a look at them:

  • Product Quality: The product must be of high quality. If the product is not of high quality, it will break down quickly and need repairing.
  • Price: The price of the product should be reasonable. The product must be within your budget so that you do not have any financial constraints while using it.
  • Brand reputation: The brand name should be well known in the market and has been around for a long time so that its reputation can be trusted and its quality can be ensured.

aftermarket amp interface adapters: Tips for Buying Online Safely

Online shopping has become a part of our everyday lives. The convenience of purchasing items from anywhere at any time is hard to beat. But it’s not all roses and sunshine. There are some real concerns when buying aftermarket amp interface adapters from online:

1. Use a Secure Wifi or Internet Connection

Although it is comfortable and easy to browse and buy through public networks, malls or stores, the truth is that these networks are often unreliable. Hackers and cybercriminals can easily capture the information packets transmitted over public connections. For this reason, we recommend you go through a secure network to make purchases or transactions in which you transfer personal information.

2. Keep Your Computer Updated and Protected

Online shopping is one of the processes in which more personal and dangerous information is transferred. Therefore, before shopping, ensure your computer is secure, updated and equipped with a good antivirus product.

3. Buy on Known and Reputable Websites

Searching the internet for the best offers can take you to the unknown and unreliable. Stay away from them. Check that the URL of the web site matches where you think it is, and its address begins with https. Shopping at trusted and reputable websites can prevent identity theft or data victims.

4.  Find and Review Privacy and Return Policies

Before buying from an online store, ensure that their Privacy Policy is easily located on the site and up to date. Do you know what to do if your gift is not right? How can you return it? These are also aspects to consider when choosing where to shop.

5. Only Share Personal Information That is Necessary and Only on a Secure Form

If it surprises you that they ask you for some personal information (mobile, relatives’ name, place of birth …) to carry out the purchase, do not do it, and it checks that you are in the correct place. In addition, tools such as the virtual keyboard of Panda Security can avoid data theft if your computer is infected with some virus spyware.

6. Avoid Links in Emails and Ads

Is the offer you received in an email too good to be true? Then, it probably is. During this time of year, e-mails and ads with offers and big discounts are a tool widely used by cybercriminals. Avoid phishing.

7. Periodically Check Your Credit Card Transactions

After making several purchases online, check that all charges on your account are known and controlled. If you find any suspicious activity, contact your bank. Maybe you’ve been a victim of identity theft.


There are many brands in the global and local market to choose from, but not all of them will offer you the aftermarket amp interface adapters. The key is finding a good brand that offers quality and value for your purchase. When choosing a good brand, critical considerations include customer reviews about their products, warranty policy, how long they’ve been around, and what other customers have said about their service record. We hope this post may help you narrow down your search so that now making an informed decision on which one to buy should be much easier!


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