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

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.

Easy enough to hook up and it works great

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.

This low converter works very well. The price point is nice. It's very simple to install. As stated by others it's extremely important to make sure you have your speaker polarity correct! Also, the instructions fail to mention that the 12v power source needs to be wired to an accessory feed (one that turns on and off with the ignition switch). Otherwise the converter will be on always. This is especially important if you plan to use the converters blue wire to trigger your amp! Because if the converter is always on, so is your amp = dead battery. Other than that, no complaints, but that wiring detail cost the product one star off my review.

Great product

Worked perfectly on my factory BOSE system to add an amp with a subwoofer. Was nice and small size to fit anywhere in my trunk, build quality is great and the audio quality is excellent. Can’t beat for the value and how easy it was to install in my trunk. In less than one hour I had my Alpine amp and Polk audio DXi subwoofer added to my factory BOSE system. Now I have the full audio range and nice deep bass when needed. Awesome product.

Works great wish it had mounting holes

Been using for about a month works flawlessly. Great value.

Easy install, works great so far

Too confusing for me. They recommend a multimeter to set up properly. Did not end up working out. The instructions were a little vague. Returned.

I wired the converter in to the car as per the instructions and it didn’t turn on. I have checked the wiring and the plug for the converter has power but it does not power on??????????