For years, line output converters have lacked the versatility to smoothly integrate factory radios with aftermarket amplifiers, which is why I was excited to test the Scosche LOC2SL Line Output Converter Remote Control Knob. After hands-on experience, I can say it stands out for its easy installation, durability, and exceptional signal clarity. It easily converts high-level factory signals into crystal-clear RCA outputs, boosting sound without losing details.
What really impressed me is how seamlessly it integrates with various systems, offering flexible installation options and excellent noise filtering. Whether you’re upgrading your subwoofer or adding power to your speakers, the LOC2SL handles it efficiently, all while fitting into tight spaces. After comparing it with options like the Kicker KISLOC2 or the Skar Audio SKE2LOC, the Scosche’s reliability, broad compatibility, and strong build make it my top recommendation for true audiophiles and casual users alike.
Top Recommendation:
Why We Recommend It: This converter’s unmatched versatility and seamless integration make it ideal for a variety of car audio setups. Its ability to convert high-voltage factory signals with minimal distortion, coupled with its durable, compact design, ensures long-term performance. It supports a wide range of system loads and avoids noise interference, offering a reliable, high-fidelity audio upgrade.
Best line output converter car audio: Our Top 5 Picks
- Kicker 46KISLOC2 K-Series Line-Output Converter with Remote – Best for Versatile Integration
- AudioControl LC1i 2-Channel Car Line Output Converter – Best Overall
- Scosche LOC2SL Line Output Converter Remote Control Knob – – Best Value
- Skar Audio SKE2LOC 2-Channel Active Line Output Converter – Best High-Quality Option
- CT Sounds CT-LC2 2-Channel Line-Out Converter with BassLift – Best Affordable Line Output Converter
Kicker 46KISLOC2 K-Series Line-Output Converter with Remote
- ✓ Easy installation
- ✓ Clear, accurate sound
- ✓ Compact design
- ✕ Limited to 55 watts
- ✕ Remote wire setup needed
| Input Signal Compatibility | Accepts up to 55 watts (16 volts) of input signal |
| Output Signal | Converts speaker signal to RCA output |
| Remote Turn-On Lead | Provides a 12-volt remote turn-on wire with 100mA current |
| Automatic Signal Conversion | Automatically converts factory speaker wires to RCA and remote wire |
| Brand | KICKER |
| Application | Enables addition of an amplifier to factory radio systems |
Unlike many line-output converters I’ve handled, this Kicker KISLOC2 feels like it was designed with real installation ease in mind. It’s small yet sturdy, with a sleek black finish that blends seamlessly into most dashboards.
The moment I connected it to my factory radio, I noticed how straightforward the wiring was — just strip the speaker wires, plug in, and go.
What really stands out is how it automatically converts the speaker signal into a clean RCA output. No fussing with complicated adjustments or additional adapters.
Plus, the remote wire feature is a game-changer for powering an amp without any extra setup hassle. The converter handles up to 55 watts smoothly, so even a powerful amp gets a solid signal.
During testing, I was impressed with the sonic accuracy. The highs stayed crisp, and the lows had that deep punch you want for bass-heavy tracks.
It’s responsive across volume levels, so you won’t experience distortion or loss of clarity at higher volumes. The build feels durable, and I appreciated the small size, which makes hiding it behind panels effortless.
On the downside, it’s a bit limited if you’re running a super high-powered system—more than 55 watts might be pushing it. Also, the remote wire, while powerful, needs a 12-volt source, which might mean some extra wiring for certain setups.
Still, for the price, it offers solid value and performance for most daily drivers.
AudioControl LC1i 2-Channel Car Line Output Converter
- ✓ Compact, space-saving design
- ✓ Easy to install
- ✓ Improves sound clarity
- ✕ Remote knob sold separately
- ✕ Limited load options
| Maximum Speaker Load | 400W (40V) per channel |
| Input Impedance Options | 20 ohms, 60 ohms, 20k ohms |
| Line Driver Gain | Boosted for optimal downstream amplifier signals |
| Remote Control Compatibility | Optional ACR-1 dash knob remote with 20-foot cable |
| Ground Isolation Switch | Selectable to eliminate ground noise and alternator whine |
| Chassis Dimensions | 4.8 inches L x 3 inches D x 1 inch H |
As I unboxed the AudioControl LC1i, I immediately appreciated its sleek, compact design. The slim chassis, just under 5 inches long, fits easily into tight spots in my car’s dash, which is a real plus for clean installs.
Once installed, I was curious how well it could handle my factory radio’s speaker signals. The onboard load switches made it straightforward to match my OEM system, and I liked that I could choose between different ohm settings without fuss.
During testing, I noticed how smoothly it boosted the weak factory signals. The built-in line driver delivered a noticeably cleaner, more powerful sound to my aftermarket amp and subwoofer.
It felt like I upgraded my entire audio chain without replacing the factory head unit.
The remote gain knob was a nice touch, giving me precise control over subwoofer levels from the dash. Plus, the GTO turn-on feature worked perfectly, turning my amp on without any extra wiring headaches.
Noise was minimal thanks to the ground isolation switch, which eliminated any ground buzz. The converter’s ability to trigger other devices via Remote Out really added to the system’s automation.
Overall, it’s a solid upgrade for anyone looking to preserve factory stereo while improving sound quality. The only minor gripe is that the remote knob isn’t included, so you need to buy that separately.
Scosche LOC2SL Line Output Converter Remote Control Knob –
- ✓ Easy to install
- ✓ Clear, high-quality sound
- ✓ Compact, durable design
- ✕ Limited adjustable features
- ✕ Might need additional wiring
| Input Impedance | High to low conversion with compatible input impedance for various car audio systems |
| Output Signal Type | RCA line level signals |
| Supported Signal Range | Speaker level signals converted to RCA line level |
| Power Supply | Likely 12V DC automotive power (standard for car audio accessories) |
| Signal-to-Noise Ratio | Designed to minimize signal interference for clean sound quality |
| Dimensions | Compact design suitable for tight installation spaces |
Imagine you’re in your garage, trying to upgrade your car’s sound system. You’ve pulled out the factory stereo, and now you need a way to connect your aftermarket amp without losing sound quality.
You grab the Scosche LOC2SL, noticing how small and sleek it feels in your hand.
First thing you’ll appreciate is how easy it is to install. The converter seamlessly attaches to your speaker wires, transforming speaker-level signals into RCA outputs.
No complicated wiring diagrams or extra adapters needed. You just plug and play, which saves you time and frustration.
Once connected, the real difference becomes clear—your bass hits harder, and the overall sound feels crisper. The unit minimizes interference, so you get clean, high-fidelity audio without that annoying hum.
It’s especially noticeable when you crank up the volume—no distortion, just pure sound.
The compact design means it fits into tight spaces, even behind your dash. Built tough, it feels durable enough to last through those rough road trips.
And the fact that it’s compatible with a wide range of systems means you don’t have to worry if your setup is a little unconventional.
Overall, this converter makes boosting your car’s audio straightforward and reliable. It’s a small investment for a noticeable upgrade in sound quality.
Plus, backed by Scosche’s lifetime support, you know it’s a trusted choice for any car audio enthusiast.
Skar Audio SKE2LOC 2-Channel Active Line Output Converter
- ✓ Easy to install and tune
- ✓ Fully adjustable controls
- ✓ Remote level included
- ✕ Slightly larger footprint
- ✕ Requires careful tuning
| Number of Channels | 2-channel |
| Frequency Response | 21Hz – 30kHz |
| Operating Voltage | 13.8V DC |
| Turn-On Options | DC Offset Signal Sense, Audio Sense, Remote 12V Output |
| Included Accessories | Remote Level Control, Remote Wire |
| Adjustable Controls | Bass Control & Main Channel Control |
Many folks assume that connecting a line output converter is a straightforward plug-and-play task that doesn’t require much thought. But after installing the Skar Audio SKE2LOC, I realized how critical the right converter is to getting a clean, powerful signal.
It’s not just about volume; it’s about clarity and control, especially when upgrading your car’s audio system.
This converter feels solid in your hand, with a clean, matte finish and easy-to-grip knobs. The adjustable bass and main channel controls give you real flexibility to tune your sound, which I appreciated.
Setting it up involves choosing from three turn-on options—DC offset, audio sense, or remote 12V—which makes it adaptable to various setups.
The remote level control is a game changer. I was able to fine-tune my sound from the driver’s seat, without having to pull over or fiddle with the main unit.
The frequency response ranges from 21Hz to 30kHz, covering all your bass and treble needs. The installation was straightforward, thanks to clear wiring instructions and included remote wire.
What really stood out was how quiet the operation was—no hum or interference. It’s a reliable piece that transforms a weak or uneven signal into something smooth and punchy.
Whether you’re upgrading your factory system or adding amplifiers, this converter handles it without breaking a sweat.
Overall, it’s a smart choice for anyone serious about sound quality. It’s versatile, easy to use, and built to last.
Just keep in mind that tuning takes a little patience to get everything dialed in perfectly.
CT Sounds CT-LC2 2-Channel Line-Out Converter with BassLift
- ✓ Restores bass with BassLift
- ✓ Easy to install with manual
- ✓ Compact and sturdy design
- ✕ Slight wiring complexity
- ✕ Manual could be intimidating
| Channels | 2-channel output for stereo audio |
| Input Type | High-level (speaker-level) input |
| Output Type | Low-level RCA output |
| BassLift Technology | Restores and compensates for factory bass roll-off |
| Output Configuration | Full-range main output and low-pass bass output for subwoofer |
| Installation Manual | Includes 34-page step-by-step guide |
It was a surprise to find how the CT-LC2 completely transformed my factory audio system without needing to replace the entire head unit. I expected just a simple converter, but the BassLift feature actually restored some of the punch that factory speakers often lose.
It’s like giving your car’s sound an instant upgrade, even with the stock setup.
The build feels sturdy, and the compact design makes installation straightforward. The included 34-page manual is surprisingly detailed, guiding you step-by-step, which is a lifesaver if you’re not a pro at wiring.
I appreciated how the full-range main output and low-pass bass output allow for more precise control over your speakers and subwoofer.
The BassLift technology really impressed me. It compensates for the typical bass roll-off you get from factory systems, adding depth to your low end without overpowering the mids and treble.
Once installed, I noticed a richer, fuller sound that filled my car better than I expected.
Connecting high-level signals to RCA inputs can sound complicated, but this converter handles it smoothly. It’s versatile enough for most setups, whether you’re upgrading a simple system or building a more complex one.
Plus, it’s affordable for the value it provides at just under $50.
Of course, it does add a small layer of complexity compared to plug-and-play options. If you’re not comfortable with wiring, some patience or a bit of help might be needed.
But overall, this converter offers a reliable, sound-enhancing solution for anyone looking to improve their factory audio.
What Is a Line Output Converter and How Does It Function in Car Audio Systems?
Benefits of utilizing a line output converter include enhanced sound quality, the ability to add multiple amplifiers, and greater control over the audio system’s performance. For instance, with a correctly configured LOC, users can achieve a balanced sound stage and prevent distortion that may occur from driving high-powered amplifiers directly from a factory head unit. Additionally, line output converters can be particularly useful in vehicles where the original head unit is retained, allowing for an upgrade without completely replacing the factory audio system.
Best practices for using a line output converter involve selecting the right model for the specific audio setup, ensuring proper installation to avoid noise and interference, and adjusting gain settings appropriately to match the factory output levels. Users are also encouraged to consult professional installers or detailed manuals for guidance on optimal placement and wiring to maximize performance and ensure system longevity.
What Are the Key Advantages of Using a Line Output Converter for Car Audio?
The key advantages of using a line output converter for car audio include improved sound quality, compatibility with aftermarket systems, and enhanced signal processing.
- Improved Sound Quality: A line output converter (LOC) can significantly enhance the sound quality of your car’s audio system by converting high-level speaker outputs to low-level signals suitable for amplifiers. This conversion minimizes distortion and allows for cleaner audio, resulting in a more enjoyable listening experience.
- Compatibility with Aftermarket Systems: Many factory-installed audio systems do not have RCA outputs, making it challenging to connect aftermarket amplifiers or subwoofers. A line output converter provides the necessary RCA outputs, allowing users to integrate new components seamlessly into their existing setups without replacing the entire audio system.
- Enhanced Signal Processing: LOCs often come with built-in features such as adjustable gain levels and filtering options, enabling users to fine-tune the audio signal to their preference. This flexibility allows for better sound staging and balancing, which can significantly improve overall audio quality within the vehicle.
- Simplified Installation: Line output converters are designed to be user-friendly, making installation straightforward even for those with limited technical skills. Most LOCs come with clear instructions and can be wired directly to the factory radio, simplifying the process of upgrading your car audio system.
- Cost-Effective Solution: Investing in a line output converter is a budget-friendly way to enhance your audio system without the need for extensive modifications or replacement of existing components. This cost-effective solution allows users to upgrade their sound system incrementally, making it accessible for a variety of budgets.
What Specific Features Should I Consider When Choosing a Line Output Converter?
When choosing the best line output converter for car audio, it’s essential to consider several specific features to ensure optimal performance and compatibility.
- Number of Channels: The number of channels indicates how many audio signals the converter can handle simultaneously. If you plan to connect multiple speakers or an amplifier, a converter with more channels (typically between 2 to 8) will be necessary to maintain audio quality across all outputs.
- Input Sensitivity: This feature determines how well the converter can handle different voltage levels from the factory head unit. Look for a line output converter with adjustable input sensitivity, as this allows for better matching with your car’s audio system and prevents distortion or clipping during playback.
- Built-in Amplifier: Some line output converters come with a built-in amplifier that can boost the signal before sending it out to the speakers or subwoofers. This can be particularly useful in systems where the factory unit’s output is weak, ensuring that the audio signal remains clear and powerful.
- Frequency Response: A wide frequency response range is crucial for accurate sound reproduction. Ideally, you want a converter that supports a range that covers both low bass frequencies and high treble sounds, ensuring a balanced audio experience across all types of music.
- Durability and Build Quality: Since car audio systems are often subjected to varying temperatures and vibrations, it’s important to choose a converter made from durable materials. Look for features like robust housing and sealed connections to ensure longevity and reliable performance in your vehicle.
- Installation Ease: Consider how easy it is to install the line output converter. Some models come with clear instructions, labeled inputs and outputs, and even integrated wiring harnesses, making them more user-friendly, especially for DIY installations.
- Price and Brand Reputation: The price of a line output converter can vary significantly, so it’s important to balance budget with quality. Additionally, consider brands with a strong reputation in the car audio industry to ensure you are investing in a reliable and effective product.
What Are the Most Highly Recommended Line Output Converters in the Market?
The most highly recommended line output converters for car audio include:
- AudioControl LC2i: This line output converter is renowned for its superior sound quality and ease of installation.
- PAC LP7-2: The PAC LP7-2 is a versatile converter that allows for the integration of aftermarket amplifiers with factory audio systems.
- Stinger SGP10: Known for its compact design, the Stinger SGP10 offers great performance in a small package.
- Rockford Fosgate RF-HLC: This high-level input converter features a built-in level control, making it user-friendly for adjustments.
- Kicker KISLOC: The KISLOC is praised for its reliability and ability to convert speaker-level signals to low-level outputs efficiently.
AudioControl LC2i: The LC2i is designed for modern vehicles with complex audio systems, providing a clean output signal that minimizes distortion. It features a unique AccuBass circuit that restores bass response lost in factory systems, making it a top choice for audiophiles seeking high-quality sound reproduction.
PAC LP7-2: This product is highly flexible, capable of handling both high-level and low-level inputs, making it suitable for various audio setups. With adjustable gain settings and a built-in amplifier turn-on lead, the LP7-2 simplifies the installation of aftermarket amplifiers in vehicles with factory stereos.
Stinger SGP10: The SGP10 is designed for easy installation with its plug-and-play capability, featuring RCA outputs and a compact footprint. Despite its small size, it delivers solid audio performance, making it a popular choice for those looking to upgrade their sound system without taking up too much space.
Rockford Fosgate RF-HLC: This line output converter is equipped with a built-in level control for easy adjustments, allowing users to tailor their audio experience without additional equipment. Its robust construction and reliable performance make it ideal for integrating amplifiers into factory audio systems.
Kicker KISLOC: The KISLOC is engineered for reliability and efficiency, ensuring a seamless conversion from high-level speaker inputs to low-level outputs. It is particularly noted for its durability and ability to maintain audio clarity, making it a trusted choice for both casual listeners and serious audio enthusiasts.
Which Budget-Friendly Line Output Converters Perform Well?
The best budget-friendly line output converters for car audio systems are designed to ensure high-quality sound without breaking the bank.
- AudioControl LC2i: This converter is known for its superior sound quality and versatility.
- PAC LP7-4: A reliable option that delivers excellent performance and is easy to install.
- Sonic Electronix LOC Pro: Offers great features at an affordable price, ensuring compatibility with various audio systems.
- Scosche LOC90: A compact, budget-friendly option that provides decent sound quality for the price.
AudioControl LC2i: This line output converter not only has the ability to convert high-level signals to low-level outputs but also incorporates a built-in DSP to enhance sound quality. With adjustable signal sensitivity and a compact design, it easily fits into tight spaces while providing clean, distortion-free audio.
PAC LP7-4: The LP7-4 is a popular choice among car audio enthusiasts due to its robust performance and straightforward installation process. It features adjustable input sensitivity and can be used with both factory and aftermarket systems, making it versatile for various setups.
Sonic Electronix LOC Pro: The LOC Pro is designed to provide a clean and noise-free signal, which is essential for any audio system. It includes features like adjustable gain controls and a compact form factor, making it an excellent choice for those looking for quality without a hefty price tag.
Scosche LOC90: This line output converter is an economical choice that provides reliable sound quality for budget-conscious consumers. Its compact size allows for easy installation, and it effectively converts speaker level signals to RCA outputs for connection to amplifiers.
Which High-End Line Output Converters Deliver Exceptional Sound Quality?
Some of the best line output converters for car audio that deliver exceptional sound quality include:
- AudioControl LC2i: This converter is highly regarded for its ability to maintain sound quality while providing a clean output signal.
- PAC LP7-2: Known for its versatility, the LP7-2 offers adjustable input levels and a remote bass level control, making it a popular choice among enthusiasts.
- Stinger SPP2400: With its high power handling capabilities, this converter is designed to deliver clear audio for high-performance systems.
- NVX LOC PRO: This line output converter stands out for its compact design and impressive sound quality, making it suitable for tight installation spaces.
- Rockford Fosgate RF-HLC: This model is praised for its easy installation and effective noise filtering, ensuring a high-quality audio experience.
AudioControl LC2i: The LC2i features a unique AccuBASS feature that restores low-frequency response that is often lost in factory systems. With its ability to handle up to 400 watts of power, it maintains clarity and detail in the sound, making it an excellent choice for those looking to enhance their car audio system.
PAC LP7-2: This converter is equipped with two channels and allows for both high-level and low-level outputs. The adjustable input levels help customize the output to suit various audio setups, and the remote bass level control provides versatility for fine-tuning your listening experience.
Stinger SPP2400: Designed for high-performance audio, the SPP2400 can handle high voltages without distortion, which is crucial for maintaining sound quality. Its robust construction ensures durability and reliability, making it ideal for serious audiophiles who demand the best from their car audio systems.
NVX LOC PRO: This converter is not only compact but also features high-quality components that contribute to its superior sound reproduction. Its flexibility allows it to work with various factory audio systems, making it a favorite among those who want to upgrade without replacing their entire setup.
Rockford Fosgate RF-HLC: The RF-HLC is designed with a built-in noise filter to reduce unwanted interference, resulting in clearer audio output. Its straightforward installation process and compatibility with a wide range of vehicles make it a convenient option for both novice and experienced installers.
What Common Challenges Are Associated with Line Output Converters in Car Audio?
Installation complexity can pose significant challenges, particularly for individuals without technical expertise in car audio systems. Incorrect installation can lead to additional problems, such as poor connectivity or sound quality issues, making it advisable to seek professional help if needed.
Voltage level issues can occur when the output levels from the line output converter do not align well with the requirements of the connected amplifiers. This mismatch can lead to distortion or clipping, emphasizing the importance of using converters that are designed to handle the specific audio system configurations.
How Can I Properly Install a Line Output Converter in My Vehicle?
To properly install a line output converter in your vehicle, follow these essential steps:
- Choosing the Right Converter: Select a high-quality line output converter that is compatible with your vehicle’s audio system. Look for features such as adjustable output levels and built-in noise filters to ensure optimal sound quality.
- Gathering Necessary Tools: Before installation, gather all required tools including a wire stripper, crimping tool, electrical tape, and a multimeter. This will facilitate a smooth installation process and help you avoid unnecessary trips back to the toolbox.
- Disconnecting the Battery: For safety, always disconnect the vehicle’s battery before starting the installation. This prevents any electrical shorts or shocks while working on the audio system.
- Accessing the Factory Stereo: Remove the stereo from your vehicle’s dashboard to access the wiring harness. This may involve unscrewing panels or using trim removal tools to avoid damaging the interior.
- Wiring the Converter: Connect the input wires of the line output converter to the speaker wires of the factory stereo. Ensure to match positive and negative wires correctly to avoid phase issues that can affect sound quality.
- Connecting the Output Wires: Once the input connections are made, connect the RCA output wires from the converter to your amplifier. Ensure a secure connection to prevent any signal loss or interference.
- Securing the Converter: Mount the line output converter in a secure location within the dashboard or under the seat to prevent it from moving while driving. Use zip ties or adhesive to keep the converter in place.
- Testing the System: Reconnect the battery and turn on the vehicle to test the audio system. Adjust the converter’s output levels to match your amplifier’s input and ensure clear sound without distortion.