---
product_id: 416838640
title: "Car Audio Speaker Wire to RCA Line Output Converter, 2-Channel High to Low RCA Converter for Adding Amplifier Subwoofer to Stock Stereo"
brand: "nuith"
price: "A$42"
currency: AUD
in_stock: true
reviews_count: 11
category: "Nu Ith"
url: https://www.desertcart.com.au/products/416838640-car-audio-speaker-wire-to-rca-line-output-converter-2
store_origin: AU
region: Australia
---

# automatic relay power-on sensing 2-channel high-to-low RCA conversion easy plug-and-play installation Car Audio Speaker Wire to RCA Line Output Converter, 2-Channel High to Low RCA Converter for Adding Amplifier Subwoofer to Stock Stereo

**Brand:** nuith
**Price:** A$42
**Availability:** ✅ In Stock

## Summary

> 🎶 Upgrade your ride’s sound game without the hassle!

## Quick Answers

- **What is this?** Car Audio Speaker Wire to RCA Line Output Converter, 2-Channel High to Low RCA Converter for Adding Amplifier Subwoofer to Stock Stereo by nuith
- **How much does it cost?** A$42 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/416838640-car-audio-speaker-wire-to-rca-line-output-converter-2)

## Best For

- nuith enthusiasts

## Why This Product

- Trusted nuith brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug, Play & Amplify:** Auto-sensing relay powers your amp instantly when signal is detected—no manual switches needed.
- • **On-the-Fly Bass Control:** Adjust gain levels directly on the converter for perfect bass balance without pulling over.
- • **Compact & Durable Design:** Sleek, lightweight build fits discreetly and ensures stable, reliable connections on every drive.
- • **Seamless Amplifier Integration:** Effortlessly add amps or subs to any factory or aftermarket stereo without rewiring headaches.
- • **Crystal-Clear Signal Conversion:** Transforms high-voltage speaker outputs into pristine low-voltage RCA signals—no buzz, no distortion.

## Overview

The NuIth Car Audio Speaker Wire to RCA Line Output Converter is a compact, 2-channel adapter that converts high-level speaker outputs into low-level RCA signals, enabling easy addition of amplifiers or subwoofers to factory or aftermarket car stereos. Featuring automatic relay power sensing and adjustable gain control, it delivers clean, distortion-free audio with simple plug-and-play installation.

## Description

desertcart.com: NuIth Car Audio Speaker Wire to RCA Line Output Converter, 2-Channel High to Low RCA Converter for Adding Amplifier Subwoofer to Stock Stereo : Electronics

Review: Used on My ’07 Avalon – Perfect for Aftermarket Radio Install - used this NuIth RCA line output converter to install an aftermarket radio and subwoofer in my 2007 Toyota Avalon, and it worked perfectly. It was exactly what I needed to get a clean RCA signal from the factory speaker wires. The wiring was simple — just tap into the speaker lines and connect your amp RCA cables. It’s compact, solidly built, and the signal came through clean with no noise, buzzing, or distortion. It made adding an amp super easy without needing to completely redo the wiring or rip out the stock harness. For the price, this is a great little tool to have if you’re adding a sub or amp to a stock or aftermarket system without RCA outs. ⸻ 🔧 Pros: • Clean signal output — no interference • Easy to install — wiring is straightforward • Great for factory or aftermarket radio setups • Worked perfectly on my 2007 Avalon • Compact and well-built Cons: • Doesn’t come with wiring instructions (but easy if you’ve done installs before) ⸻ Final Verdict: If you’re upgrading your sound system and need RCA outs from speaker wires, this converter does the job right. I’d definitely use it again — highly recommended for any DIY car audio setup.
Review: Working great - Easy enough to hook up and it works great

## Features

- Car audio speaker level converter wiring adapter allows to add 2 channel or mono amplifier or subwoofer to existing factory or aftermarket car stereo kit
- Convert car stereo speaker wire output to RCA Cable outputs: In order to improve the sound quality, the function of RCA output can convert high to low; The high voltage signal output of the amplifier/speaker converts to low-voltage signal
- Convenient to use: There is the level gain adjustment to adjust the bass down without having to pull over and manually adjust the amplifier
- Easy to install: Use this adapter when adding an amplifier to a factory radio that convert the radio's speaker level output to the lower amplifier RCA level input; Tap into a speaker wire and it senses the signal, and turns on a relay to send power to the amp
- Reasonable and neat power plug, it has the prefect bonding and contact stability; Provide clean and excellent sound

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09MT92KVY |
| Best Sellers Rank | #5,720 in Electronics ( See Top 100 in Electronics ) #61 in RCA Cables |
| Customer Reviews | 4.4 4.4 out of 5 stars (687) |
| Date First Available | November 16, 2021 |
| Item Weight | 3.53 ounces |
| Item model number | 6926585403699 |
| Manufacturer | NuIth |
| Product Dimensions | 3.9 x 2.3 x 0.7 inches |

## Product Details

- **Color:** black
- **Compatible Devices:** Amplifier, Speaker
- **Connector Type:** RCA
- **Item dimensions L x W x H:** 3.9 x 2.3 x 0.7 inches
- **Specific Uses For Product:** Amplifier, Speaker

## Images

![Car Audio Speaker Wire to RCA Line Output Converter, 2-Channel High to Low RCA Converter for Adding Amplifier Subwoofer to Stock Stereo - Image 1](https://m.media-amazon.com/images/I/61A0PfmEFyL.jpg)

## Questions & Answers

**Q: Why is the High to Low Converter still working after the car is turned off?**
A: 12V power needs to be connected to ACC, if connected to the car battery will always working.

**Q: what is the max input watts?**
A: The max input watts is 50 watt.

**Q: What is the blue wire for?**
A: Connect the blue wire to the amplifier’s “remote turn-on” or “REM” INPUT. Always refer to your amplifier’s owner’s manual for wiring details/function of your particular amplifier.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Used on My ’07 Avalon – Perfect for Aftermarket Radio Install
*by T***R on August 7, 2025*

used this NuIth RCA line output converter to install an aftermarket radio and subwoofer in my 2007 Toyota Avalon, and it worked perfectly. It was exactly what I needed to get a clean RCA signal from the factory speaker wires. The wiring was simple — just tap into the speaker lines and connect your amp RCA cables. It’s compact, solidly built, and the signal came through clean with no noise, buzzing, or distortion. It made adding an amp super easy without needing to completely redo the wiring or rip out the stock harness. For the price, this is a great little tool to have if you’re adding a sub or amp to a stock or aftermarket system without RCA outs. ⸻ 🔧 Pros: • Clean signal output — no interference • Easy to install — wiring is straightforward • Great for factory or aftermarket radio setups • Worked perfectly on my 2007 Avalon • Compact and well-built Cons: • Doesn’t come with wiring instructions (but easy if you’ve done installs before) ⸻ Final Verdict: If you’re upgrading your sound system and need RCA outs from speaker wires, this converter does the job right. I’d definitely use it again — highly recommended for any DIY car audio setup.

### ⭐⭐⭐⭐⭐ Working great
*by M***M on February 15, 2026*

Easy enough to hook up and it works great

### ⭐⭐⭐⭐⭐ Works As Expected
*by B***9 on August 25, 2025*

Works great. This function exactly as it should. I have been using this for a while now and have 0 complaints. Easy to install as long as you know what you are doing. Its small enough to be easy to hide. The sounds is clean and clear. The price feels worth every penny.

## Frequently Bought Together

- NuIth Car Audio Speaker Wire to RCA Line Output Converter, 2-Channel High to Low RCA Converter for Adding Amplifier Subwoofer to Stock Stereo
- BOSS Audio Systems KIT2 8 Gauge Complete Car Amplifier Installation Wiring Kit with Power Cables, Ground Cables, Turn-On Wire, Speaker Wire, Terminals

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---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-12*