Best RCA Line Output Converters for Car Audio
Answered: If you want to add an amplifier or subwoofer to a factory or aftermarket car stereo, a high-quality RCA line output converter is essential. This guide highlights five reliable options, explains who each is best for, and helps you choose the right converter for your system. The top picks cover wide input ranges, clean signal paths, and practical installation options for a variety of vehicles and setups.
Summary table of featured products
| Product | Best For | Key Benefit |
|---|---|---|
| Kicker 46KISLOC2 K-Series | Powerful upgrade with remote turn-on | High input handling up to 55W; compact footprint |
| Scosche LOC2SL | Flexible installation with remote knob | 2-channel, wide compatibility, easy control |
| Scosche LOC80 | Budget-friendly upgrade with solid sound | Two-channel line-out, simple wiring |
| Skar Audio SKAR2CH-LOC | OEM or aftermarket radios with wide input | 55W input, flat 20Hz–20kHz range |
| NuIth Car Audio LOC | Adding amps/subs to stock systems | Line-level conversion with gain adjustment |
Kicker 46KISLOC2 K-Series Stereo Line-Out Converter
The KISLOC2 is designed for drivers who want a clean, reliable signal when adding an amplifier to a factory radio. It converts speaker-level signals to both RCA outputs and a remote turn-on line, enabling a seamless integration with a powered amplifier. This model accepts up to 55 watts (16 volts) of input, which makes it suitable for many factory head units and moderately powered aftermarket systems. Best for: car enthusiasts who emphasize accurate audio reproduction at varying volumes and want a compact converter with a built-in remote lead. Limitations: remote wiring requires proper routing to avoid interference or accidental power draw when the car is off.
Scosche LOC2SL Line Output Converter with Remote Control Knob
The LOC2SL stands out for its built-in remote control knob and versatile 2-channel design. It’s well-suited for drivers who want precise control over subwoofer or amplifier levels without needing a separate external knob. Its broad compatibility makes it a practical choice for many factory radios and aftermarket systems, while still maintaining sound quality. Best for: users seeking straightforward installation with adjustable level control. Limitation: some installations may require extra space behind the dash to accommodate the knob housing or wiring routes.
Scosche LOC80 Line Output Converter
The LOC80 is a practical two-channel line-out converter designed for straightforward installs and reliable performance. It emphasizes ease of use, making it a strong choice for users who want to boost a factory stereo’s performance without complex rewiring. Best for: value-conscious buyers who need dependable upgrade capability and minimal setup time. Caution: while versatile, it may not offer as much input headroom as higher-end models in very demanding systems.
Skar Audio SKAR2CH-LOC
The SKAR2CH-LOC provides robust performance with compatibility across OEM, aftermarket, and smart radios. It handles up to 55 watts (16 volts) and offers a flat 20 Hz to 20 kHz frequency response at all volume levels, which helps preserve audio fidelity across the spectrum. Best for: listeners who want a versatile converter capable of supporting diverse radio types while maintaining consistent sound quality. Limitation: as with many compact line-out converters, extreme system demands may benefit from higher-end models with greater headroom.
NuIth Car Audio LOC
The NuIth LOC focuses on adding amplification to stock or aftermarket head units with a simple two-channel, high-to-low RCA conversion. It includes gain adjustment to dial in bass and overall level matching without needing engine-off re-tuning. Best for: buyers upgrading an existing stereo who want adjustable output to pair with a dedicated amp or subwoofer. Caution: verify compatibility with your specific radio and amplifier input requirements to avoid mismatches in signal level.
Buying Guide: Key Purchase Considerations
What should you look for when choosing an RCA line output converter?
- Input power range: Ensure the converter can handle the maximum wattage your factory or aftermarket radio can deliver. Higher input compatibility provides more flexibility for stronger amplifiers.
- Output options: Confirm it provides the required RCA line-level outputs and, if needed, a remote turn-on signal for the amplifier.
- Noise isolation: Models with added isolation or transformers help reduce interference and preserve audio clarity.
- Ease of installation: Look for compact units with straightforward wiring and clear labeling. Some models include remote knobs for on-the-fly adjustments.
- Compatibility: Check whether the converter supports OEM radios, aftermarket radios, or smart radios. Some units work with a wide range of head units, others are purpose-built for specific systems.
- Headroom and frequency response: A broader frequency range and higher headroom (wattage handling) translate to cleaner bass and highs when driving subwoofers or processors.
Practical recommendation framework
- Best for compact, neat installations: Kicker 46KISLOC2 or Skar Audio SKAR2CH-LOC, which balance performance with a small footprint.
- Best for adjustable control: Scosche LOC2SL stands out with its remote knob for quick level changes.
- Best value: Scosche LOC80 provides reliable two-channel performance at a friendly price point.
- Best all-around compatibility: Skar Audio SKAR2CH-LOC and NuIth LOC both offer robust compatibility across different radio types and installation scenarios.
Frequently Asked Questions
- Do all cars need a line-out converter to add an amplifier?
– Not always, but many factory radios use speaker-level outputs that require conversion to RCA line level for compatible amplifiers. - Can I use a line-out converter with a subwoofer?
– Yes. Many converters provide RCA outputs suitable for subwoofer amplifiers. Check power handling to ensure compatibility with your sub’s amplifier. - Will a line-out converter improve sound quality by itself?
– It enables the connection to an amplifier, which can improve sound quality, but the overall improvement depends on the entire system’s components and tuning. - Is remote turn-on necessary?
– Remote turn-on wires simplify amplifier startup control. It’s commonly included, but not strictly required if the amplifier supports other turn-on methods. - What should I consider for compatibility with OEM radios?
– Verify input signal level, compatibility with your head unit’s output type, and whether the converter supports the radio’s load characteristics. - Do I need professional installation?
– A straightforward install is possible for many units, but a professional install ensures proper grounding, routing, and safety for complex systems.