Rngeo 2 Packs Ground Loop Noise Isolator for Car Audio/Home Stereo System, Ground Loop Isolator with 3.5mm Audio Cable

Was worried these wouldn’t work as they were so inexpensive. But let me tell you, Had some major noise in my audio streaming set up (so bad I couldn’t hear the game or commentary. Once adding this inline, cleaned it right up! If you have ANY noise in your system, these will do the trick.

It's electronically a stupidly simple circuit any beginner could make, but the trick is containing it within a professional-looking, commercially-made housing that isn't made from a pill bottle or other reused container, and doing so for less cost than getting TWO of these for.... what'd I pay, eight bucks? nine?I have a Jeep with the aux audio port into which I have wired my amateur radio transceiver via a 3.5mm TRS patch cable. The alternator whine only came through on the receive audio, never went out on transmit, and honestly it was quite tolerable, but I really wanted to get rid of it. Knowing the circuit was a simple design, I figured it would be quite inexpensive to purchase a commercially manufactured product, and I was correct. Installation was a breeze, and fortunately I already have the radio bracket close enough I could zip-tie the filter to the bracket and keep it secured and out of sight. You can barely see it!It definitely works. After installation, I couldn't hear any whine. I'm not saying it's zero, but the engine with the tops off and windows down was loud enough that I couldn't hear it with the filter installed, whereas the whine was loud enough to hear through the engine noise with the filter not installed.I don't 100% understand the theory myself, but essentially it's a 1:1 audio isolation transformer inline that disconnects the lines electrically (DC) but still allows audio (AC) to pass electromagnetically via the transformer windings and core, thus breaking the otherwise direct connection between audio equipment and a variable ground potential (voltage on the audio ground instead of chassis ground) from the alternator.Anyway, bottom line, it works, and I have two for the same price some sellers are selling only one.

it stops the buzzing noise so it works really well. i’m glad i bought these ones cause they work well

Was at my wit's end with trying to solve a ground loop buzz with my streaming platform where two outputs went into a small mixer. One output would be fine, but as soon as I would plug in the mixer the second output I would experience a terrible ground loop buzz. Adding one isolator to each output fixed the issue completely. Finally!

The connector is almost not the right size... I mean the plug is loose in the hole. Like what she say's....