Choosing the best line out converter for car audio improves sound quality and adds amplifiers easily. These devices change speaker signals into RCA outputs for better audio control.
A good line out converter helps connect your car’s factory stereo to aftermarket amplifiers or subwoofers. This upgrade brings clearer sound and deeper bass without changing the original system. Some converters include extra features like remote turn-on control and bass adjustment.
Brands like Kicker, Scosche, NuIth, and AudioControl offer reliable models with easy installation and strong performance. Whether upgrading your stereo or adding a subwoofer, the right converter makes a big difference. This guide covers top options to fit different needs and budgets, helping you choose the best line out converter for your car audio system.
Kicker K-series Stereo Line-output Converter

The Kicker 46KISLOC2 K-Series Stereo Line-Output Converter w/Remote Turn-On Output is ideal for car audio enthusiasts and DIY installers looking to upgrade their factory sound system without replacing the entire head unit. This device is perfect for those who want to integrate aftermarket amplifiers with factory stereos, allowing for improved sound quality and greater control over their vehicle’s audio setup.
Pros:
- Compact design with easy installation dimensions (2.0″ H x 5.0″ W x 6.0″ L)
- Remote turn-on output for seamless amplifier integration
- High-quality signal conversion that reduces noise and distortion
- Lightweight at just 0.2 pounds, making it easy to mount anywhere
- Reliable brand from Kicker, known for durable audio components
Cons:
- May require professional installation for some vehicle models
- Limited to stereo line-output conversion, not suitable for multi-channel setups
The Kicker 46KISLOC2 boasts a compact and lightweight design, making it easy to fit into tight spaces within your vehicle. Its dimensions (2.0 inches high, 5.0 inches wide, and 6.0 inches long) allow for flexible mounting options. The inclusion of a remote turn-on output simplifies the process of connecting aftermarket amplifiers, ensuring they power on and off in sync with the factory stereo system. This feature enhances convenience and protects your audio equipment from unnecessary power cycles.
Functionality-wise, this line-output converter is engineered to provide clear, high-quality signal conversion from your factory stereo’s speaker outputs to RCA inputs on an aftermarket amplifier. This means you can enjoy improved audio clarity and volume without the hassle of replacing your entire head unit. The product’s build quality and the trusted Kicker brand provide users with confidence in its durability and performance, making it a smart choice for those looking to upgrade their car audio system efficiently.
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Scosche Loc2sl Line Output Converter

The Scosche LOC2SL Line Output Converter with Remote Control Knob is perfect for car audio enthusiasts who want to upgrade their sound system by integrating a subwoofer or an aftermarket amplifier without replacing the factory stereo. Ideal for those seeking an easy installation solution that maintains quality sound, this 2-channel high/low RCA converter is designed for users who want enhanced audio performance and convenient control over their car’s sound output.
Pros:
- Easy installation with plug-and-play design
- Includes a remote control knob for quick volume adjustments
- High-quality sound conversion for clear audio output
- Compact and lightweight design (0.4 pounds) that fits easily in most vehicles
- Compatible with most factory car stereos for seamless integration
Cons:
- Limited to 2-channel output, not suitable for multi-channel audio setups
- Remote control knob cable length may require adjustment depending on vehicle layout
The Scosche LOC2SL features a high/low RCA converter that allows users to connect an aftermarket amplifier or subwoofer to their factory stereo system without needing to replace the head unit. This means you can enjoy enhanced bass and improved sound quality without complicated wiring or expensive upgrades. The included remote control knob offers convenient volume control, enabling users to adjust the subwoofer output on the fly for the perfect listening experience.
Designed with quality and ease of use in mind, the converter’s compact black casing fits discreetly in your vehicle, making installation hassle-free. Its ability to convert speaker-level signals to line-level RCA outputs ensures that your amplifier receives a clean, distortion-free audio signal. This results in superior sound clarity and improved overall audio performance, making the Scosche LOC2SL a smart choice for anyone looking to upgrade their car audio system efficiently and effectively.
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Nuith Car Audio Speaker Wire To Rca Line Output Converter

The NuIth Car Audio Speaker Wire to RCA Line Output Converter is ideal for car audio enthusiasts and DIY installers who want to upgrade their vehicle’s sound system by adding an amplifier or subwoofer to a stock stereo setup. If you own a factory stereo without RCA outputs and wish to enhance your audio experience without replacing the head unit, this converter is a perfect choice.
Pros:
- Easy conversion from high-level speaker outputs to low-level RCA outputs
- Supports 2-channel audio for clear sound quality
- Compact and lightweight design for simple installation
- Durable black casing ensures long-lasting use
- Compatible with most stock car stereos
Cons:
- Limited to 2-channel output, not suitable for multi-channel systems
- May require basic wiring knowledge for installation
- No additional features such as volume control or signal boosting
The NuIth RCA Line Output Converter is designed to seamlessly convert speaker-level signals into RCA outputs, allowing users to easily integrate aftermarket amplifiers and subwoofers into existing car audio systems. Its compact dimensions (Height: 0.7 inches, Width: 2.3 inches, Length: 3.9 inches) and lightweight build (approximately 0.22 pounds) make it easy to install discreetly behind the dashboard or near the stereo unit without taking up much space.
With its straightforward plug-and-play setup, this converter provides a reliable and efficient way to improve your vehicle’s audio performance. The high to low-level conversion ensures that the connected amplifier receives the appropriate signal strength, minimizing distortion and enhancing sound clarity. This makes the NuIth Converter a valuable accessory for anyone looking to upgrade their car audio system while retaining the factory stereo.
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Kicker K-series Interconnect

The KICKER 46KISLOC K-Series Interconnect, Speaker to RCA W/Line-Out Converter is ideal for audio enthusiasts and professionals who want to seamlessly integrate their car audio systems with aftermarket amplifiers or receivers. If you are looking to upgrade your sound system by converting speaker-level outputs to RCA line-level inputs, this device is perfectly suited for you. Its compact size and reliable performance make it a great choice for anyone seeking enhanced audio compatibility and quality.
Pros:
- Compact and lightweight design for easy installation
- High-quality signal conversion from speaker to RCA outputs
- Durable build from a reputable brand, KICKER
- Improves compatibility between factory speakers and aftermarket audio equipment
Cons:
- Limited to speaker to RCA conversion only
- Requires some basic knowledge of car audio wiring for installation
The KICKER 46KISLOC K-Series Interconnect features a compact design measuring just 0.5 inches in height, 2.0 inches in width, and 4.5 inches in length, making it easy to fit into tight spaces within your vehicle. Despite its small size, it effectively converts speaker-level signals into RCA line-level outputs, allowing you to connect aftermarket amplifiers or head units without distortion or signal loss. This ensures that your upgraded audio system performs optimally.
Constructed by Kicker, a trusted name in audio technology, this converter guarantees durability and long-lasting performance. It is lightweight at only 0.1 pounds, which simplifies the installation process and reduces strain on your vehicle’s wiring. Whether you are upgrading your car stereo or building a custom audio setup, this interconnect provides reliable performance and improved sound quality, making it an essential component for serious audio enthusiasts.
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Audiocontrol Lc2i

The AudioControl LC2i 2 Channel Line Out Converter with AccuBASS and Subwoofer Control is ideal for car audio enthusiasts and professionals looking to upgrade their factory sound systems. If you want to enhance your vehicle’s audio quality without replacing the entire head unit, this device is perfect for converting high-level speaker outputs to low-level RCA outputs, enabling seamless integration with aftermarket amplifiers and subwoofers.
Pros:
- Provides precise AccuBASS bass restoration to compensate for bass loss in factory head units.
- Includes subwoofer level control for easy tuning of low-frequency output.
- Compact design with black finish fits discreetly in most installations.
- Easy to install with clear connection options and adjustable settings.
- Manufactured by a reputable brand, Audio Control, ensuring quality and reliability.
Cons:
- Limited to 2 channel conversion, which may not suit multi-channel audio setups.
- Requires some technical knowledge for optimal installation and adjustment.
- Slightly higher price point compared to basic line out converters.
The AudioControl LC2i excels by delivering clean and accurate signal conversion from speaker-level inputs to RCA outputs, preserving the integrity of the audio signal. Its unique AccuBASS feature addresses the common issue of bass roll-off in factory systems by restoring low frequencies, resulting in richer and fuller sound without distortion. Users benefit from the customizable subwoofer control, which allows precise adjustment of bass levels, tailoring the audio experience to personal preferences or vehicle acoustics.
Designed with both ease of use and performance in mind, the compact black LC2i unit fits effortlessly into most vehicle installations. Its durable construction and clear manufacturer backing from Audio Control ensure that users receive a reliable product that enhances their sound system’s performance. Whether upgrading a stock stereo or integrating a high-end amplifier, this line out converter provides a professional solution that balances technical sophistication with user-friendly operation.
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Frequently Asked Questions
What Is A Line Out Converter In Car Audio?
A line out converter changes high-level speaker signals to low-level RCA outputs. It allows connecting aftermarket amplifiers to stock car stereos without RCA outputs.
Which Line Out Converter Offers The Best Sound Quality?
The AudioControl LC2i provides clear sound with AccuBASS and subwoofer control. It is ideal for enhancing audio fidelity in car systems.
How Do I Install A Kicker Line Out Converter?
Kicker LOC converters plug into speaker wires and convert signals. Installation is simple, requiring minimal tools and no cutting of factory wires.
Can I Control Bass With These Line Out Converters?
Yes, models like the AudioControl LC2i include bass adjustment features. This allows fine-tuning of subwoofer output for better sound balance.
Are Remote Turn-on Outputs Necessary In Line Out Converters?
Remote turn-on outputs trigger amplifiers to power on with the stereo. Kicker and Scosche converters include this feature for convenient amp control.
Will A Line Out Converter Work With Any Car Stereo?
Most line out converters, including NuIth and Kicker models, work with factory stereos. They enable adding amplifiers without replacing the head unit.
Conclusion
Choosing the right line out converter for your car audio system is important. It enhances sound quality and ensures seamless integration. Each product mentioned here offers unique features and benefits. The Kicker 46KISLOC2 provides reliable performance with remote turn-on output.
The Scosche LOC2SL offers easy installation and quality sound, perfect for subwoofer amplifiers. The NuIth converter is great for adding amplifiers to stock stereos. The KICKER 46KISLOC and AudioControl LC2i both offer excellent sound enhancement features. Consider your specific needs and budget.
This will help you select the best option. Remember, a good line out converter can significantly improve your car audio experience. It bridges the gap between your stereo and new components. Take your time to evaluate each option. Make sure it aligns with your expectations.
A well-chosen converter can transform your listening experience. Enjoy better sound quality and a more immersive audio journey.