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Factory Stereo Upgrades

Go beyond factory limitations, eliminate "baked-in" equalization, and add the power your system’s been missing when you shop for specialized OEM integration tools at Sonic Electronix.


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Axxess AXSUB-CH5

Active 2-Channel Line Output Converter and Subwoofer Data Interface for select 2014-2026 vehicles from Ram, Jeep, Dodge

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Active 2-Channel Line Output Converter and Subwoofer Data Interface for select 2014-2026 vehicles from Ram, Jeep, Dodge

• Line Output Converter and Subwoofer Data Interface
• Integrates with amplified or non-amplified factory OEM systems
• Allows for the addition of an aftermarket subwoofer
• Compatible with select 2014-2026 vehicles from Ram, Jeep, Dodge

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List price $228.99
-10% $205.99

In stock

• Line Output Converter and Subwoofer Data Interface
• Integrates with amplified or non-amplified factory OEM systems
• Allows for the addition of an aftermarket subwoofer
• Compatible with select 2014-2026 vehicles from Ram, Jeep, Dodge

PAC LPHNI03

Vehicle Specific Audio Integration T-Harness for select 2002-2021 vehicles from Nissan, Subaru, Infiniti

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Vehicle Specific Audio Integration T-Harness for select 2002-2021 vehicles from Nissan, Subaru, Infiniti

• T-harness to install an aftermarket amplifier, line-out converter or signal processor
• 4-channels of speaker-level signals from factory radio
• Compatible with PAC LocPro line output converters
• Works with amplifiers and sound processors with speaker-level input
• Compatible for select 2002-2021 vehicles from Nissan, Subaru, Infiniti with non-amplified systems

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List price $109.00
-42% $63.00

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• T-harness to install an aftermarket amplifier, line-out converter or signal processor
• 4-channels of speaker-level signals from factory radio
• Compatible with PAC LocPro line output converters
• Works with amplifiers and sound processors with speaker-level input
• Compatible for select 2002-2021 vehicles from Nissan, Subaru, Infiniti with non-amplified systems

GROM Audio CHRUVT2

Factory Radio Android Auto, Apple CarPlay and Navigation Integration Upgrade for select 2014-2023 vehicles from Dodge, Jeep, Ram

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Factory Radio Android Auto, Apple CarPlay and Navigation Integration Upgrade for select 2014-2023 vehicles from Dodge, Jeep, Ram

• Factory Radio Integration for VLite VT2 Infotainment Systems
• Compatible with select 2014-2023 vehicles from Dodge, Jeep, Ram
• VLine infotainment system in silver metal enclosure
• Android Auto and Apple CarPlay upgrade via USB or wireless
• Power harnesses, GPS receiver, microphone and USB cable included

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$559.95

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• Factory Radio Integration for VLite VT2 Infotainment Systems
• Compatible with select 2014-2023 vehicles from Dodge, Jeep, Ram
• VLine infotainment system in silver metal enclosure
• Android Auto and Apple CarPlay upgrade via USB or wireless
• Power harnesses, GPS receiver, microphone and USB cable included

GROM Audio LEX78TVT2

Factory Radio Android Auto, Apple CarPlay and Navigation Integration Upgrade for select 2013-2021 vehicles from Lexus, Toyota

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Factory Radio Android Auto, Apple CarPlay and Navigation Integration Upgrade for select 2013-2021 vehicles from Lexus, Toyota

• Factory Radio Integration for VLite VT2 Infotainment Systems
• Compatible with select 2013-2021 vehicles from Lexus, Toyota
• VLine infotainment system in silver metal enclosure
• Android Auto and Apple CarPlay upgrade via USB or wireless
• Supports maps, music, messaging and calls

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List price $559.95
$549.95

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• Factory Radio Integration for VLite VT2 Infotainment Systems
• Compatible with select 2013-2021 vehicles from Lexus, Toyota
• VLine infotainment system in silver metal enclosure
• Android Auto and Apple CarPlay upgrade via USB or wireless
• Supports maps, music, messaging and calls

iDataLink Maestro HRN-AR-FO2 Wiring Harness

Install New Amplifier and Connect Maestro AR Module in select 2011-2025 vehicles from Ford

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Install New Amplifier and Connect Maestro AR Module in select 2011-2025 vehicles from Ford

• Amplifier replacement harness for select 2011-2025 vehicles from Ford
• Compatible with Ford vehicles with 8" "My Ford Touch" stereo and Sony amplifier
• Includes all necessary wiring to install Maestro AR module
• Plug-n-play, easy installation

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List price $61.99
-19% $49.99

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• Amplifier replacement harness for select 2011-2025 vehicles from Ford
• Compatible with Ford vehicles with 8" "My Ford Touch" stereo and Sony amplifier
• Includes all necessary wiring to install Maestro AR module
• Plug-n-play, easy installation

GROM Audio AUDCVT2

Factory Radio Android Auto, Apple CarPlay and Navigation Integration Upgrade for select 2009-2016 A4

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Factory Radio Android Auto, Apple CarPlay and Navigation Integration Upgrade for select 2009-2016 A4

• Factory Radio Integration for VLite VT2 Infotainment Systems
• Compatible with select 2009-2016 A4
• VLine infotainment system in silver metal enclosure
• Android Auto and Apple CarPlay upgrade via USB or wireless
• Supports maps, music, messaging and calls

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List price $559.95
$549.95

In stock

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• Factory Radio Integration for VLite VT2 Infotainment Systems
• Compatible with select 2009-2016 A4
• VLine infotainment system in silver metal enclosure
• Android Auto and Apple CarPlay upgrade via USB or wireless
• Supports maps, music, messaging and calls

Axxess AXBUCH-MI

Install or Retain Backup Camera in select 2014-2025 vehicles from Mitsubishi with Navigation

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Install or Retain Backup Camera in select 2014-2025 vehicles from Mitsubishi with Navigation

• Camera retention and add-on harness
• Compatible with select 2014-2025 vehicles from Mitsubishi with Navigation
• Retains the factory backup camera to an aftermarket radio
• Allows an aftermarket camera to be added to the OEM screen

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List price $22.99
-13% $19.99

In stock

• Camera retention and add-on harness
• Compatible with select 2014-2025 vehicles from Mitsubishi with Navigation
• Retains the factory backup camera to an aftermarket radio
• Allows an aftermarket camera to be added to the OEM screen

Crux AVINS-07

Audio/Video Input Interface with VIM Activation for select 2014-2025 vehicles from Nissan

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Audio/Video Input Interface with VIM Activation for select 2014-2025 vehicles from Nissan

• Audio/Video Input Interface with VIM Activation
• For select 2014-2025 vehicles from Nissan
• Provides a composite A/V input
• Includes HDMI to composite adaptor cable
• Plug and play connection

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List price $264.60
-36% $170.10

In stock.

• Audio/Video Input Interface with VIM Activation
• For select 2014-2025 vehicles from Nissan
• Provides a composite A/V input
• Includes HDMI to composite adaptor cable
• Plug and play connection

iDataLink Maestro HRN-AR-HK3 Wiring Harness

Install Maestro AR Module and Replace Factory Amplifier in select 2014-2025 vehicles from Hyundai, Kia

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Install Maestro AR Module and Replace Factory Amplifier in select 2014-2025 vehicles from Hyundai, Kia

• Amplifier replacement harness for select 2014-2025 vehicles from Hyundai, Kia
• Works with DSP with dedicated SPDIF input
• Includes harnesses needed to install Maestro AR module
• Plug-n-play, easy installation

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List price $43.99
-20% $34.99

In stock

• Amplifier replacement harness for select 2014-2025 vehicles from Hyundai, Kia
• Works with DSP with dedicated SPDIF input
• Includes harnesses needed to install Maestro AR module
• Plug-n-play, easy installation

Alpine i509-WRA-JK

9" Custom Fit Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, Built-in SiriusXM, and iDataLink Maestro for select 2011-2018 vehicles from Jeep

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9" Custom Fit Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, Built-in SiriusXM, and iDataLink Maestro for select 2011-2018 vehicles from Jeep

• Custom Fit Bluetooth Digital Multimedia Receiver
• 9" Touchscreen WVGA Display
• Designed for select 2011-2018 vehicles from Jeep
• Apple CarPlay and Android Auto Compatible
• 3 sets of 4 volts preamp outputs
• 13-Band Parametric Equalizer
• SiriusXM Satellite Radio Ready
• Splash-proof and dust-proof touchscreen and bezel (IP53-rated)

Get a Free DVR-C320R with Select Alpine Stereos!
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List price $3120.00
-17% $2,599.95

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Axxess AXBUCH-T2

Install a New Car Stereo and Add or Retain Backup Camera in select 2006-2013 vehicles from Toyota with Navigation

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Install a New Car Stereo and Add or Retain Backup Camera in select 2006-2013 vehicles from Toyota with Navigation

• Camera retention and add-on harness
• Compatible with select 2006-2013 vehicles from Toyota with navigation
• Retains the factory backup camera to an aftermarket radio
• Applicable for display and navigation model radios

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List price $48.99
-10% $43.99

In stock

• Camera retention and add-on harness
• Compatible with select 2006-2013 vehicles from Toyota with navigation
• Retains the factory backup camera to an aftermarket radio
• Applicable for display and navigation model radios

Crux VRFBM-77C

Front and Rear View Integration Interface for select 2008-2025 vehicles from BMW with 6-Pin LVDS Connector and 6.5", 7", 8.8", 10.25" Monitors

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Front and Rear View Integration Interface for select 2008-2025 vehicles from BMW with 6-Pin LVDS Connector and 6.5", 7", 8.8", 10.25" Monitors

• Front and rear view integration interface
• Fits select 2008-2025 vehicles from BMW with 6-Pin LVDS connector
• Supports stereos with 6.5", 7", 8.8", 10.25" screens
• Provides rear view and front view camera input
• Compatible with all factory video accessories
• Hassle-free plug and play installation

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List price $597.95
-38% $369.95

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• Front and rear view integration interface
• Fits select 2008-2025 vehicles from BMW with 6-Pin LVDS connector
• Supports stereos with 6.5", 7", 8.8", 10.25" screens
• Provides rear view and front view camera input
• Compatible with all factory video accessories
• Hassle-free plug and play installation

Axxess AXDSPL-CH8

Install a DSP and New Amplifier to Factory System in select 2021-2022 vehicles from Ram, Dodge, Chrysler

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Install a DSP and New Amplifier to Factory System in select 2021-2022 vehicles from Ram, Dodge, Chrysler

• Plug and Play T-harness for faster installation
• For select 2021-2022 vehicles from Ram, Dodge, Chrysler
• Designed for both amplified and non-amplified systems
• Selectable 15-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters

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List price $419.99
-39% $255.99

In stock

• Plug and Play T-harness for faster installation
• For select 2021-2022 vehicles from Ram, Dodge, Chrysler
• Designed for both amplified and non-amplified systems
• Selectable 15-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters

GROM Audio MITS02U3 (GROM-USB3-MITS02)

Android and iOS Smartphone Integration for Select 1997 - 2012 Mitsubishi Vehicles

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Android and iOS Smartphone Integration for Select 1997 - 2012 Mitsubishi Vehicles

• Android, Bluetooth, iPhone Integration Kit
• Compatible With 1997-2012 Mitsubishi Stereos
• USB, AUX, Bluetooth, Android, iPod Car Integration
• Android in-car play, charge and control
• Plugs Directly Into Vehicles Harness
• Two EXT ports for AUX-IN, Bluetooth and iPod
• Streaming Audio for Android 4.1 and Above

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List price $174.99
-31% $119.99

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• Android, Bluetooth, iPhone Integration Kit
• Compatible With 1997-2012 Mitsubishi Stereos
• USB, AUX, Bluetooth, Android, iPod Car Integration
• Android in-car play, charge and control
• Plugs Directly Into Vehicles Harness
• Two EXT ports for AUX-IN, Bluetooth and iPod
• Streaming Audio for Android 4.1 and Above

Crux UC-2

Rear-View Integration Interface for select 2011-2023 Charger and 300 and Journey with Uconnect System

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Rear-View Integration Interface for select 2011-2023 Charger and 300 and Journey with Uconnect System

• Rear view backup camera integration interface
• Fits select 2011-2023 Charger and 300 and Journey
• For uConnect 8.4" screen or 2-piece radio with 22-pin connector
• Activates Uconnect touchscreen radio
• Hassle-free plug and play installation

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In stock.

• Rear view backup camera integration interface
• Fits select 2011-2023 Charger and 300 and Journey
• For uConnect 8.4" screen or 2-piece radio with 22-pin connector
• Activates Uconnect touchscreen radio
• Hassle-free plug and play installation

Axxess AXAMP-CH5

Amplifier Integration Interface for select 2014-2023 vehicles from Ram, Jeep, Dodge

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Amplifier Integration Interface for select 2014-2023 vehicles from Ram, Jeep, Dodge

• Amplifier integration interface for select 2014-2023 vehicles from Ram, Jeep, Dodge
• Enables to add aftermarket amplifiers to OEM source units
• Includes external bass knob
• Provides 6 channels of 5-volt RMS audio
• Designed for amplified and non-amplified vehicles
• Plug-and-play installation

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List price $456.99
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• Amplifier integration interface for select 2014-2023 vehicles from Ram, Jeep, Dodge
• Enables to add aftermarket amplifiers to OEM source units
• Includes external bass knob
• Provides 6 channels of 5-volt RMS audio
• Designed for amplified and non-amplified vehicles
• Plug-and-play installation

GROM Audio SUB08B3 Subaru Bluetooth Streaming Kit (GROM-BT3-SUB08)

Add Bluetooth Hands Free Calling and Music Streaming to Select 2003-2014 Subaru Factory Radiosselect 2002-2014 vehicles from Subaru

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Add Bluetooth Hands Free Calling and Music Streaming to Select 2003-2014 Subaru Factory Radiosselect 2002-2014 vehicles from Subaru

• Hands Free Bluetooth Car Kit
• Compatible With Select 2006-2009 Subaru Vehicles
• Plugs Directly Into Vehicles Harness
• Streaming Audio from your Smartphone or Bluetooth Enabled Music Player

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• Hands Free Bluetooth Car Kit
• Compatible With Select 2006-2009 Subaru Vehicles
• Plugs Directly Into Vehicles Harness
• Streaming Audio from your Smartphone or Bluetooth Enabled Music Player

Axxess AXDSPX-TY3

Install a DSP and New Amplifier to Factory System in select 2016-2023 vehicles from Toyota

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Install a DSP and New Amplifier to Factory System in select 2016-2023 vehicles from Toyota

• DSP data interface with pre-wired harness
• For select 2016-2023 vehicles from Toyota
• Designed for non-amplified systems
• Can be used with factory and aftermarket radios
• Selectable 31-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters

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• DSP data interface with pre-wired harness
• For select 2016-2023 vehicles from Toyota
• Designed for non-amplified systems
• Can be used with factory and aftermarket radios
• Selectable 31-band graphic EQ or 5-band parametric EQ
• Settings adjusted via Bluetooth in a smart device
• Selectable high pass, low pass, or bandpass filters

GROM Audio VOLSCVT2

Factory Radio Android Auto, Apple CarPlay and Navigation Integration Upgrade for select 2015-2018 vehicles from Volvo

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Factory Radio Android Auto, Apple CarPlay and Navigation Integration Upgrade for select 2015-2018 vehicles from Volvo

• Factory Radio Integration for VLine Infotainment Systems
• Compatible with select 2015-2018 vehicles from Volvo
• VLine infotainment system in silver metal enclosure
• Android Auto and Apple CarPlay upgrade via USB or wireless
• Supports maps, music, messaging and calls

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List price $559.95
$549.95

In stock.

• Factory Radio Integration for VLine Infotainment Systems
• Compatible with select 2015-2018 vehicles from Volvo
• VLine infotainment system in silver metal enclosure
• Android Auto and Apple CarPlay upgrade via USB or wireless
• Supports maps, music, messaging and calls

Crux RVCMB-78O

Rear-View Integration Interface for select 2007-2024 vehicles from Mercedes-Benz with Command NTG4 and NTG4.5 Systems

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Rear-View Integration Interface for select 2007-2024 vehicles from Mercedes-Benz with Command NTG4 and NTG4.5 Systems

• Rear view backup camera integration interface
• Fits select 2007-2024 vehicles from Mercedes-Benz
• Compatible with NTG4, NTG4-212, and NTG4.5 systems
• Activates the rear-view camera function
• No dealer programming required

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In stock.

• Rear view backup camera integration interface
• Fits select 2007-2024 vehicles from Mercedes-Benz
• Compatible with NTG4, NTG4-212, and NTG4.5 systems
• Activates the rear-view camera function
• No dealer programming required

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    FAQ Frequently asked questions in Factory Stereo Upgrades


    Yes, you can upgrade your car's factory stereo without voiding the warranty, as long as the installation is done correctly and with compatible aftermarket accessories. Many car manufacturers understand that customers may want to personalize their audio systems, and they allow aftermarket upgrades that do not interfere with the vehicle's essential functions. To avoid any warranty issues, it is essential to choose reputable upgrade accessories from trusted brands. Additionally, consider using professional installation services or following the manufacturer's recommended guidelines when installing the upgrade components. By taking these precautions, you can enjoy an improved audio experience without affecting your car's warranty coverage.
    Yes, upgrading your factory stereo with high-quality accessories can significantly improve sound quality. Factory stereos are often designed to meet cost considerations, resulting in average audio performance. Aftermarket accessories, on the other hand, are built with audio excellence in mind, offering better sound clarity, increased power output, and improved bass response. Upgrading speakers and adding amplifiers can enhance audio reproduction and provide a richer, more balanced sound. Additionally, advanced head units with features like equalizers, sound processors, and digital signal processing can fine-tune the audio output to match your preferences and optimize the sound for your vehicle's interior acoustics. Overall, a well-planned factory stereo upgrade can transform your car's audio system into a premium audio experience.
    Factory stereo upgrade accessories are available for a wide range of car models, but compatibility can vary depending on the vehicle's make and year. It is essential to check the specifications and compatibility of each accessory with your car's make and model before making a purchase. Many reputable manufacturers provide compatibility information on their websites or packaging, making it easier to select the right accessories for your car. Additionally, consider consulting with a car audio specialist or using online resources to find accessories that are confirmed to be compatible with your specific vehicle. By ensuring compatibility, you can enjoy a seamless installation and optimal performance from the upgrade accessories.
    The ability to install factory stereo upgrade accessories yourself depends on your experience and comfort level with car audio installations. Some upgrades, such as replacing speakers or installing a new head unit, may be relatively straightforward for individuals with basic automotive DIY skills. However, certain upgrades, like adding amplifiers or integrating advanced sound processors, can be more complex and may require technical expertise. If you are unsure about the installation process or want to ensure a professional and polished result, it is recommended to seek professional installation services. Professional installers have the necessary tools, knowledge, and experience to perform the upgrade correctly and efficiently, avoiding potential issues and ensuring optimal performance from the upgraded accessories.
    Yes, but it often requires a specialized interface. Premium systems (like Bose or Lexicon) usually use a factory amplifier that sends processed signals to the speakers. To add a sub, you typically need an LOC that can handle high-voltage input or a vehicle-specific T-harness that taps into the signal before it reaches the factory amp.
    High-quality interfaces from brands like PAC or iDatalink are designed to communicate with the vehicle's CAN-bus system. They provide a "Remote Turn-On" lead for your aftermarket amplifiers, ensuring they only power up when the vehicle is on or the radio is active, preventing parasitic battery drain.
    Some modern vehicles (particularly those from Chrysler, Dodge, Jeep, and RAM) perform a "load test" on the speaker outputs. If you disconnect the factory speakers to add an amplifier, the car may think the speakers are blown and mute the audio output entirely. A load-generating device mimics the electrical resistance of a speaker, "tricking" the factory system into operating normally.

    All About

    Factory Stereo Upgrades

    When you want to add subwoofers or high-end speakers to a factory system, you need more than just a standard wire splice. Our selection of factory stereo upgrade components ensures that your new gear communicates perfectly with your vehicle’s existing computer systems.

    Line Output Converters (LOCs)

    Line output converters (LOCs) take the high-level signal meant for your factory speakers and convert it into a low-level RCA signal that an aftermarket amplifier can use.
    We carry everything from basic two-channel converters to advanced units from brands like AudioControl, which feature "AccuBASS" to counteract the bass roll-off often programmed into factory stereos.

    Digital Signal Processors (DSP)

    Factory radios are often tuned to protect cheap paper speakers, resulting in a "flat" or muddy sound. A Digital signal processor (DSP) allows you to take complete control of your acoustic environment.

    By using a DSP, you can sum signals, eliminate factory EQ curves, and adjust time alignment so that the music reaches your ears perfectly, regardless of where the speakers are placed.

    Vehicle-Specific Interfaces & Harnesses

    Cutting into your factory wiring can void warranties and cause electrical headaches. We offer plug-and-play harnesses and interfaces from leaders like iDatalink Maestro and PAC.

    These modules allow you to add aftermarket amplifiers while retaining steering wheel controls, factory chimes, and even OnStar or SYNC features.

    Why Upgrade Your Factory System?

    By integrating high-quality aftermarket amplifiers and speakers into your existing setup, you gain:

    • Increased Headroom: Play music louder without distortion
    • Full Range Sound: Restore the deep low-end frequencies that factory systems often filter out to protect small speakers
    • OEM Aesthetics: Keep your interior looking exactly as the manufacturer intended while enjoying a "stealth" high-end audio system

    The Sonic Electronix Advantage

    Choosing the right integration part can be complex given the variety of vehicle trims and "premium" sound packages (like Bose, Sony, or Harman Kardon). At Sonic Electronix, we take the guesswork out of the process.

    Our Fit Finder is the industry standard for ensuring compatibility. When you shop with us, you aren't just buying a part; you're gaining access to our expert support team and our massive inventory of the latest car audio technology. We offer competitive pricing, fast shipping, and the technical knowledge required to help you build the system of your dreams.

    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    Save up to 10 different vehicles in your garage

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    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.