Best 2 Channel Line Out Converters for Car Audio Upgrades
The best 2 channel line out converters (LOCs) translate high-level speaker signals from your factory or aftermarket radios into clean, low-level RCA signals for amplifiers. This guide highlights five top options for American buyers, explains who each is best for, and notes important limitations to consider before you buy.
Buyer note: LOCs vary in input watt handling, bass restoration features, and ease of installation. The following selections cover a range from compact, budget-friendly models to feature-rich options with bass enhancement and auto-on capability. Use the table below to compare key details at a glance.
| Product | Best For | Key Feature |
|---|---|---|
| Kicker 46KISLOC2 K-Series | Compact installs; high-quality sound | Remote turn-on output; high output up to 8V |
| Skar Audio SKAR2CH-LOC | OEM or aftermarket radios; versatile | Flat 20Hz–20kHz range |
| CT Sounds CT-LC2 | Two-channel bass lifting; basic upgrades | BassLift technology for factory bass restoration |
| Scosche LOC2SL | Subwoofer emphasis; flexible installation | High/Low RCA conversion; remote control knob |
| NVX XLCA2 | High-power systems; advanced tuning | xBOOST; auto-on/auto-power features |
Kicker 46KISLOC2 K-Series Stereo Line-Out Converter
What it is best for: A compact LOC that preserves sonic accuracy at any volume, ideal for upgrading small to mid-sized factory radios without crowding the dash. This model automates two outputs: an RCA signal for the amplifier and a remote turn-on wire for reliable amp activation.
Why selected: The KISLOC2 is designed to deliver true highs and deep lows from your original audio, with a 100 milli-amp, 12-volt remote activation option and compatibility with up to 55 watts (16 volts) of input. The small footprint makes it suitable for tight installations where space is a concern.
Caution: The unit relies on the factory signal integrity; excessive factory head-unit noise or clipping may require additional noise filtering or a first-stage amp to optimize performance.
Skar Audio SKAR2CH-LOC 2-Channel LOC
What it is best for: Users seeking broad compatibility across OEM, aftermarket, and smart radios with strong input handling and wide frequency response. It is a flexible choice for vehicles with varied radio setups.
Why selected: It accepts up to 55 watts (16 volts) of input and maintains a flat 20 Hz–20 kHz range across all volume levels, ensuring consistent signal fidelity during volume changes and across different music genres.
Caution: For vehicles with extremely noisy electrical systems, consider pairing with additional grounding or filtering to prevent hum or interference.
CT Sounds CT-LC2 2-Channel LOC with BassLift
What it is best for: Vehicles where a two-channel LOC needs to deliver a stronger bass presence, especially when upgrading to a dedicated subwoofer amplifier or adding bass-focused audio processing.
Why selected: The CT-LC2 combines a standard main output with a dedicated low-pass bass output and BassLift technology to compensate factory bass roll-off, helping preserve low-end performance when adding amplification.
Caution: BassLift is a processing feature; if your system already has robust bass or you prefer a very flat response, you may want to compare to non-bass-enhanced models.
Scosche LOC2SL Line Output Converter
What it is best for: Audiophiles seeking a versatile line out solution that easily integrates factory gear with aftermarket amplifiers, especially when subwoofer performance is a priority.
Why selected: The LOC2SL focuses on seamless integration with minimal signal loss, offering both high-to-low conversion and a convenient remote control knob for on-the-fly level adjustments. It supports driving a subwoofer without extensive rewiring.
Caution: Depending on the vehicle, installation may require accounting for routing and shielding to minimize hum or interference with other car electronics.
NVX XLCA2 X-Series 2-Channel LOC
What it is best for: High-power installations where more robust amplification is planned, and users want advanced tuning options and efficiency features.
Why selected: The XLCA2 handles speaker-level inputs up to 400 watts RMS and includes xBOOST technology to optimize bass while maintaining clarity, plus a selectable auto-on to conserve battery power when the vehicle is in use.
Caution: Higher input capability may mean matching the rest of the system with appropriate gain settings; for casual setups, a lower-watt LOC might be more economical.
Buying Guide: Choosing the Right 2 Channel LOC
What should you consider when selecting a two-channel line out converter?
- Input wattage handling: Ensure the LOC can handle your factory or aftermarket speaker signal without clipping.
- Output voltage: Higher output (often up to 8V) can yield louder and cleaner amplifier input, especially with powerful amps.
- Subwoofer compatibility: If you plan to add a sub, look for a LOC with bass enhancement or dedicated sub outputs.
- Installation space: Some LOCs are compact; others offer additional connectors or a remote control knob—consider dash space and routing.
- Auto-on/Power features: Select auto-on if you want the amplifier to power on with the car without manual input.
- Compatibility: Verify compatibility with OEM radios, aftermarket radios, or smart radios present in your vehicle.
How do you compare features effectively?
- Choose best for: For tight spaces and clean signal, pick the smallest, high-fidelity LOC; for enhanced bass, select models with BassLift or xBOOST.
- Choose better for: If you plan a two-channel upgrade now and a subwoofer later, pick a model with flexible main and bass outputs.
- Avoid this if: Your head unit already includes robust digital processing and your goal is simple, minimal hardware changes.
FAQ
- What is a line-out converter used for? It converts high-level speaker signals into low-level RCA signals to feed aftermarket amplifiers.
- Do LOCs degrade sound quality? A well-designed LOC preserves signal integrity; poor installation or low-quality parts can introduce noise or distortion.
- Is auto-on necessary? Not always, but it saves battery power by activating the amplifier when the vehicle is in use.
- Can I use a LOC with OEM radios? Yes; many LOCs are designed to be compatible with OEM, aftermarket, or smart radios.
- Should I buy a bass-enhanced LOC? If you plan to add a sub or want stronger low-end response, consider a model with BassLift or similar technology.
- Is more output voltage always better? Higher output can improve headroom, but ensure your amplifier gain is set correctly to avoid clipping.