Best Speaker Line Out Converter of 2025

Last updated on 12/12/2025

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Scosche LOC2SL Line Output Converter with Remote Control Knob - 2CH High/Low RCA Converter Car Audio - Ideal for Subwoofer Amp - Line Level Converter for Car Stereo - Easy Installation - Quality Sound

Scosche LOC2SL Line Output Converter with Remote Control Knob - 2CH High/Low RCA Converter Car Audio - Ideal for Subwoofer Amp - Line Level Converter for Car Stereo - Easy Installation - Quality Sound

Seamless stereo to RCA conversion.
Add amplifiers effortlessly.
Convenient subwoofer control access.

Main Highlights

Unmatched Versatility - Compatible with a wide range of car audio systems, this high to low audio converter offers flexible installation options, making it a go-to solution for converting speaker level signals to RCA line level signals for optimal sound.
Seamless Integration - Effortlessly integrate your factory stereo with an aftermarket amplifier using this line level converter, ensuring no loss of sound quality; ideal for boosting your car’s audio performance without complex rewiring.
Enhanced Audio Experience - Transform your car audio system with the Scosche LOC2SL line output converter, delivering crisp and clear sound quality for your subwoofer; perfect for audiophiles seeking high-fidelity sound.
Compact and Durable Design - Engineered by Scosche, the LOC2SL line output converter is compact and built to last, fitting easily into tight spaces while maintaining durability; a reliable upgrade for any car audio enthusiast.
Optimal Signal Quality - Ensure maximum audio performance with this high-quality RCA converter for car audio, designed to minimize signal interference and deliver clean, powerful sound; the perfect addition to your custom car audio setup.
Trusted Brand - Backed by Scosche's Limited Lifetime Warranty and Lifetime Tech Support. Scosche, known for its commitment to quality car audio solutions, means you can trust the Scosche LOC2SL line output converter to deliver exceptional performance.

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Scosche LOC2SL Line Output Converter with Remote Control Knob - 2CH High/Low RCA Converter Car Audio - Ideal for Subwoofer Amp - Line Level Converter for Car Stereo - Easy Installation - Quality Sound

Seamless stereo to RCA conversion.
Add amplifiers effortlessly.
Convenient subwoofer control access.

Main Highlights

Unmatched Versatility - Compatible with a wide range of car audio systems, this high to low audio converter offers flexible installation options, making it a go-to solution for converting speaker level signals to RCA line level signals for optimal sound.
Seamless Integration - Effortlessly integrate your factory stereo with an aftermarket amplifier using this line level converter, ensuring no loss of sound quality; ideal for boosting your car’s audio performance without complex rewiring.
Enhanced Audio Experience - Transform your car audio system with the Scosche LOC2SL line output converter, delivering crisp and clear sound quality for your subwoofer; perfect for audiophiles seeking high-fidelity sound.
Compact and Durable Design - Engineered by Scosche, the LOC2SL line output converter is compact and built to last, fitting easily into tight spaces while maintaining durability; a reliable upgrade for any car audio enthusiast.
Optimal Signal Quality - Ensure maximum audio performance with this high-quality RCA converter for car audio, designed to minimize signal interference and deliver clean, powerful sound; the perfect addition to your custom car audio setup.
Trusted Brand - Backed by Scosche's Limited Lifetime Warranty and Lifetime Tech Support. Scosche, known for its commitment to quality car audio solutions, means you can trust the Scosche LOC2SL line output converter to deliver exceptional performance.

Value for Money

Kicker KISLOC 2-Channel K-Series Speaker Cable to RCA Adapter with Line Out Converter

Kicker KISLOC 2-Channel K-Series Speaker Cable to RCA Adapter with Line Out Converter

World's first micro converter.
Sure grip dual-mold connectors.
Silver tinned OFC wire.

Main Highlights

K-Series Interconnect Cable
World's first micro surface mount line-out converter
Two channel Speaker to RCA
K-Grip dual-mold connectors offer sure grip
Split pin RCA with silver tinned OFC wire

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Kicker KISLOC 2-Channel K-Series Speaker Cable to RCA Adapter with Line Out Converter

World's first micro converter.
Sure grip dual-mold connectors.
Silver tinned OFC wire.

Main Highlights

K-Series Interconnect Cable
World's first micro surface mount line-out converter
Two channel Speaker to RCA
K-Grip dual-mold connectors offer sure grip
Split pin RCA with silver tinned OFC wire

PAC Sni-35 Adjustable 2-channel Line Out Converter (sni35)

PAC Sni-35 Adjustable 2-channel Line Out Converter (sni35)

Easily connects amplifiers to radios.
Ensures clear audio signal transmission.
Adjusts for optimal sound performance.

Main Highlights

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
.5 dB Linearity from 20 - 20,000 Hz

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PAC Sni-35 Adjustable 2-channel Line Out Converter (sni35)

Easily connects amplifiers to radios.
Ensures clear audio signal transmission.
Adjusts for optimal sound performance.

Main Highlights

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
.5 dB Linearity from 20 - 20,000 Hz

VIBE Audio CLLOC-V7 Critical Link Line Level Converter, Black

VIBE Audio CLLOC-V7 Critical Link Line Level Converter, Black

15% OffFree Shipping

High to low converter.
Auto sense technology.
Quality and reliable product.

Main Highlights

1 Vibe Line Level Converter
2 channel High to low converter
Auto sense to switch your amplifier on
Quality Product
Included components: Manual

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VIBE Audio CLLOC-V7 Critical Link Line Level Converter, Black

15% OffFree Shipping

High to low converter.
Auto sense technology.
Quality and reliable product.

Main Highlights

1 Vibe Line Level Converter
2 channel High to low converter
Auto sense to switch your amplifier on
Quality Product
Included components: Manual

Stereo Audio Speak Signal Hi-Low Converter for Auto Amp Subwoofer Amplifier CD Player High to Low Adapter Audio Filter Audio Filtering Noise Elimination Anti-interference Line Output Converter

Stereo Audio Speak Signal Hi-Low Converter for Auto Amp Subwoofer Amplifier CD Player High to Low Adapter Audio Filter Audio Filtering Noise Elimination Anti-interference Line Output Converter

Excellent sound quality enhancement.
Effortless installation process provided.
Outstanding customer support guaranteed.

Main Highlights

[Excellent compatibility] Highly efficient filtering of current sound and power interference. Eliminate interference noise, ar Audio Signal Hi-Low Converter suitable for car equipment, laptop computers, audio equipment, smart phones.It converters car stereo's high audio signal(R+, R-, L+, L-, Ground) to low RCA signal(left & right channel).
[Amplifier Modify Accessory] This adapter is suitable for car stereos without RCA output to connect with the after-market amplifier. Although some amp has Hi-Low Convert function, we strongly recommend to have such an external converter to avoid the interference of the conversion inside the amp. Especially useful for CD radio stereo without Line Out port.
[How to Connect] Easy to install: Green wire connect to the Left channel negative. Yellow wire connect to the Left channel positive. Gray wire connect to the Right channel negative. Purple wire connect to the Right channel positive. Black wire connect to Ground.
[Product Dimensions] line output converter sized: 6.4 x 4.3 x2.5 cm/2.52 x 1.7 x 0.98 inch. The shell made by metal, reliable and strong.
[Reliable Service] Ready to respond within a 24 hour time frame. 30-Day money back guarantee, 12 month replacement and lifetime Support.

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Stereo Audio Speak Signal Hi-Low Converter for Auto Amp Subwoofer Amplifier CD Player High to Low Adapter Audio Filter Audio Filtering Noise Elimination Anti-interference Line Output Converter

Excellent sound quality enhancement.
Effortless installation process provided.
Outstanding customer support guaranteed.

Main Highlights

[Excellent compatibility] Highly efficient filtering of current sound and power interference. Eliminate interference noise, ar Audio Signal Hi-Low Converter suitable for car equipment, laptop computers, audio equipment, smart phones.It converters car stereo's high audio signal(R+, R-, L+, L-, Ground) to low RCA signal(left & right channel).
[Amplifier Modify Accessory] This adapter is suitable for car stereos without RCA output to connect with the after-market amplifier. Although some amp has Hi-Low Convert function, we strongly recommend to have such an external converter to avoid the interference of the conversion inside the amp. Especially useful for CD radio stereo without Line Out port.
[How to Connect] Easy to install: Green wire connect to the Left channel negative. Yellow wire connect to the Left channel positive. Gray wire connect to the Right channel negative. Purple wire connect to the Right channel positive. Black wire connect to Ground.
[Product Dimensions] line output converter sized: 6.4 x 4.3 x2.5 cm/2.52 x 1.7 x 0.98 inch. The shell made by metal, reliable and strong.
[Reliable Service] Ready to respond within a 24 hour time frame. 30-Day money back guarantee, 12 month replacement and lifetime Support.

PNGKNYOCN Car Stereo Hight to Low Converter，With Control Line Function，2-Channel Car Audio Speaker Wire to RCA Line Output Converter for Auto Amp Subwoofer Amplifier

PNGKNYOCN Car Stereo Hight to Low Converter，With Control Line Function，2-Channel Car Audio Speaker Wire to RCA Line Output Converter for Auto Amp Subwoofer Amplifier

Efficiently converts audio signals.
Compact and easy to install.
Compatible with various audio sources.

Main Highlights

The audio signal high/low converter is used to convert the high level audio voltage output from the speaker to a low level audio signal for other power amplifiers to use as input.
Built-in Ting time switch line output and low frequency RCA output, so as to solve the retrofit amplifier or subwoofer, when the original car host does not have the problem of switching line and RCA output.
Wiring: white to left speaker +; black white to left speaker -; grey to right speaker +; grey black to right speaker -; pure black to ground; red to 12V power supply; blue to control line REM
The Line Output Converter is designed to be compact and durable, and can be easily installed in tight spaces while maintaining durability; a reliable upgrade for car audio enthusiasts.
Used for the host without low frequency (RCA) output (eg: cassette player / card player / CD / VCD / DVD, etc.) will be the speaker output high-frequency conversion to low-frequency (RCA) output, used to connect the car power amplifier or subwoofer signal input

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PNGKNYOCN Car Stereo Hight to Low Converter，With Control Line Function，2-Channel Car Audio Speaker Wire to RCA Line Output Converter for Auto Amp Subwoofer Amplifier

Efficiently converts audio signals.
Compact and easy to install.
Compatible with various audio sources.

Main Highlights

The audio signal high/low converter is used to convert the high level audio voltage output from the speaker to a low level audio signal for other power amplifiers to use as input.
Built-in Ting time switch line output and low frequency RCA output, so as to solve the retrofit amplifier or subwoofer, when the original car host does not have the problem of switching line and RCA output.
Wiring: white to left speaker +; black white to left speaker -; grey to right speaker +; grey black to right speaker -; pure black to ground; red to 12V power supply; blue to control line REM
The Line Output Converter is designed to be compact and durable, and can be easily installed in tight spaces while maintaining durability; a reliable upgrade for car audio enthusiasts.
Used for the host without low frequency (RCA) output (eg: cassette player / card player / CD / VCD / DVD, etc.) will be the speaker output high-frequency conversion to low-frequency (RCA) output, used to connect the car power amplifier or subwoofer signal input

AUDIOZERONE FA-145 Car Audio Speaker Wire to RCA Line Output Converter Speaker to RCA Line-Out Converter

AUDIOZERONE FA-145 Car Audio Speaker Wire to RCA Line Output Converter Speaker to RCA Line-Out Converter

Flexible output options available.
Easy installation in any vehicle.
Perfect for car audio upgrades.

Main Highlights

High/Low 2 channel adjustable speaker cable to RCA line output converter
Compatible for connecting to the original Radios DVD car CD, host.
Individual Adjustable RCA Output Converter
Convert the speaker signal to RCA signal and connect it to the amplifier
Compact design allows for easy install

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AUDIOZERONE FA-145 Car Audio Speaker Wire to RCA Line Output Converter Speaker to RCA Line-Out Converter

Flexible output options available.
Easy installation in any vehicle.
Perfect for car audio upgrades.

Main Highlights

High/Low 2 channel adjustable speaker cable to RCA line output converter
Compatible for connecting to the original Radios DVD car CD, host.
Individual Adjustable RCA Output Converter
Convert the speaker signal to RCA signal and connect it to the amplifier
Compact design allows for easy install

XMSJSIY Car Audio High to Low Converter Adapter Line Input to RCA Stereo Output Coverter for Car Subwoofer Amplifier Stereo -1 Pcs

XMSJSIY Car Audio High to Low Converter Adapter Line Input to RCA Stereo Output Coverter for Car Subwoofer Amplifier Stereo -1 Pcs

High-quality sound restoration.
Simple installation process.
Universal vehicle compatibility.

Main Highlights

♪This Car Audio High to Low Converter converts the high frequency output of the speaker to low frequency (RCA) output, and connects the signal output of the car amplifier or subwoofer. It is used in most cars without low frequency signal players. It is designed to solve the problem that there is no switch circuit (REM) and audio output (RCA) when the car audio is equipped with a power amplifier.
♪This Car Audio Converter adopts high-performance amorphous alloy transformer for isolation, with high signal-to-noise ratio, low distortion, real sound restoration and rejection of accelerator current interference.
♪This converter has built-in delay switch citcuit output and low-frequency RCA output, so as to solve the problem that there is no switch citcuit and RCA output in the original vehicle when the power amplifier or subwoofer is added. The delay switch citcuit output reduces the impact on the power amplifier or subwoofer, so as to eliminate the impact and interference of electric current on power amplifier speakers and other electrical appliances when the host is turned on.
♪It is simple to install, needs to be driven, regardless of vehicle type, and provides power amplifier automatic switch control signal, which can be directly placed in the central console without wiring everywhere, so as to avoid current acoustic interference caused by disordered wiring.
♪White cable: connect the positive pole of the right horn. Black and white cable: connect the negative pole of the right horn. Grey cable: connect the positive pole of the left horn. Black and grey cable: connect the negative pole of the left horn. Black cable: connect the grounding wire. Red cable: connect 12V power supply. Blue cable: control citcuit REM output (if REM control function is not used, red, black and blue do not need to be connected).

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XMSJSIY Car Audio High to Low Converter Adapter Line Input to RCA Stereo Output Coverter for Car Subwoofer Amplifier Stereo -1 Pcs

High-quality sound restoration.
Simple installation process.
Universal vehicle compatibility.

Main Highlights

♪This Car Audio High to Low Converter converts the high frequency output of the speaker to low frequency (RCA) output, and connects the signal output of the car amplifier or subwoofer. It is used in most cars without low frequency signal players. It is designed to solve the problem that there is no switch circuit (REM) and audio output (RCA) when the car audio is equipped with a power amplifier.
♪This Car Audio Converter adopts high-performance amorphous alloy transformer for isolation, with high signal-to-noise ratio, low distortion, real sound restoration and rejection of accelerator current interference.
♪This converter has built-in delay switch citcuit output and low-frequency RCA output, so as to solve the problem that there is no switch citcuit and RCA output in the original vehicle when the power amplifier or subwoofer is added. The delay switch citcuit output reduces the impact on the power amplifier or subwoofer, so as to eliminate the impact and interference of electric current on power amplifier speakers and other electrical appliances when the host is turned on.
♪It is simple to install, needs to be driven, regardless of vehicle type, and provides power amplifier automatic switch control signal, which can be directly placed in the central console without wiring everywhere, so as to avoid current acoustic interference caused by disordered wiring.
♪White cable: connect the positive pole of the right horn. Black and white cable: connect the negative pole of the right horn. Grey cable: connect the positive pole of the left horn. Black and grey cable: connect the negative pole of the left horn. Black cable: connect the grounding wire. Red cable: connect 12V power supply. Blue cable: control citcuit REM output (if REM control function is not used, red, black and blue do not need to be connected).

XTRONS RCA Converter Two Channel Line-Out Hi-Lo High Level to Low-Level Output Amplifier Converter Adapter

XTRONS RCA Converter Two Channel Line-Out Hi-Lo High Level to Low-Level Output Amplifier Converter Adapter

Easily connect external amplifier.
Adjustable output for sound matching.
Reduce cable running needs.

Main Highlights

Two Channel Hi-Lo Line Out Converter is an electronic device that allows any stereo to be easily connected to an external amplifier by connecting directly to the high-level speaker output and converting it into a low-level female RCA connection.
The adjustable output level control for more improved sound level matching, and easily adjusting the Gain up if the output is too low or down, also if the output is too high this will help to limit poor sound quality and distortion.
Easily connect an amplifier to factory-fitted head units that do not have RCA connections.
Limit the amount of cable running needed for an install by connecting to the rear speakers.
Create additional outputs for 4/6/8 channel amplifiers.

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XTRONS RCA Converter Two Channel Line-Out Hi-Lo High Level to Low-Level Output Amplifier Converter Adapter

Easily connect external amplifier.
Adjustable output for sound matching.
Reduce cable running needs.

Main Highlights

Two Channel Hi-Lo Line Out Converter is an electronic device that allows any stereo to be easily connected to an external amplifier by connecting directly to the high-level speaker output and converting it into a low-level female RCA connection.
The adjustable output level control for more improved sound level matching, and easily adjusting the Gain up if the output is too low or down, also if the output is too high this will help to limit poor sound quality and distortion.
Easily connect an amplifier to factory-fitted head units that do not have RCA connections.
Limit the amount of cable running needed for an install by connecting to the rear speakers.
Create additional outputs for 4/6/8 channel amplifiers.

PNGKNYOCN Car Stereo Hight to Low Converter，2-Channel Car Audio Speaker Wire to RCA Line Output Converter for Adding Amplifier Subwoofer to Stock Stereo

PNGKNYOCN Car Stereo Hight to Low Converter，2-Channel Car Audio Speaker Wire to RCA Line Output Converter for Adding Amplifier Subwoofer to Stock Stereo

Easy integration with factory stereos.
Minimizes noise for clear audio.
Compact design for tight spaces.

Main Highlights

The Car Stereo Hi-Low Converter easily integrates factory stereos with aftermarket amplifiers and is the preferred solution for converting speaker level signals to RCA line level signals for optimal sound.
Ensuring maximum audio performance, this car audio converter minimises signal interference and delivers pure, powerful sound without noise, static or hum.
Accepts input signals up to 50 watts (12 volts) and is fully compatible with standard radios and most smart radios.
The Line Output Converter is designed to be compact and durable, and can be easily installed in tight spaces while maintaining durability; a reliable upgrade for car audio enthusiasts.
Used for the host without low frequency (RCA) output (eg: cassette player / card player / CD / VCD / DVD, etc.) will be the speaker output high-frequency conversion to low-frequency (RCA) output, used to connect the car power amplifier or subwoofer signal input

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PNGKNYOCN Car Stereo Hight to Low Converter，2-Channel Car Audio Speaker Wire to RCA Line Output Converter for Adding Amplifier Subwoofer to Stock Stereo

Easy integration with factory stereos.
Minimizes noise for clear audio.
Compact design for tight spaces.

Main Highlights

The Car Stereo Hi-Low Converter easily integrates factory stereos with aftermarket amplifiers and is the preferred solution for converting speaker level signals to RCA line level signals for optimal sound.
Ensuring maximum audio performance, this car audio converter minimises signal interference and delivers pure, powerful sound without noise, static or hum.
Accepts input signals up to 50 watts (12 volts) and is fully compatible with standard radios and most smart radios.
The Line Output Converter is designed to be compact and durable, and can be easily installed in tight spaces while maintaining durability; a reliable upgrade for car audio enthusiasts.
Used for the host without low frequency (RCA) output (eg: cassette player / card player / CD / VCD / DVD, etc.) will be the speaker output high-frequency conversion to low-frequency (RCA) output, used to connect the car power amplifier or subwoofer signal input

We scanned 1914 products

We reviewed these offers relevant to the Speaker Line Out Converter within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Scosche, KICKER, PAC, VIBE, BGoodVision, PNGKNYOCN, AUDIOZERONE, XMSJSIY, XTRONS, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Speaker Line Out Converter in the market, we considered we took a deep dive into 9571 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Scosche LOC2SL Line Output Converter with Remote Control Knob - 2CH High/Low RCA Converter Car Audio - Ideal for Subwoofer Amp - Line Level Converter for Car Stereo - Easy Installation - Quality Sound. We love many things about this product by Scosche. What sets it apart from the competition is Seamless stereo to RCA conversion, Add amplifiers effortlessly, Convenient subwoofer control access.
The best value product for most shoppers and where user satisfaction is continuously the highest is Kicker KISLOC 2-Channel K-Series Speaker Cable to RCA Adapter with Line Out Converter by KICKER based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Speaker Line Out Converter and the best cost-to-value ratio is VIBE Audio CLLOC-V7 Critical Link Line Level Converter, Blackat VIBE with a 15% discount.
Our list of the best Speaker Line Out Converter is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.