Metra - Ground Loop Isolator - Black

Installed a Pioneer DEH-80PRS and a Boss CX600 amp. I was getting the dreaded speaker noise. It was a constant whine. Did not get louder with turning up the volume on the head unit or when the engine revved higher. Turning the gain higher on the amp did make the whine get higher. After reading reviews about this situation and how some people tried grounding the amp and head unit in more than a few different places and result was the same I decided to try a ground loop isolator. Don't care if it's considered a band aid fix until the source of the problem is found. This worked perfectly. I went to best buy tonight. Went home and pulled the rear seat down. Disconnected the rca's from the amp, connected them to the GLI and the rca's from the GLI back to the amp. Started the car and the noise was completely eliminated. What a relief. This was driving me ( Expletive to the max ) nuts. Ran the power to the amp separate from the rca's and had a good ground. I will buy another when I run new speaker wire to hook up my rear speakers to the amp. Right now they are running off of the head unit.

Didn't use this for car audio- needed it for a pro-audio PA job using an in-house amplifier (in a conference center) with a bad ground. We couldn't connect anything to the in-house system without a very loud 60Hz buzz, and they only use wireless mics because of it. Had to hook up a computer for presentation audio, and taping a mic to the computer's speaker wasn't a good solution. There was a Best Buy just down the street- so picked one of these up (I remembered them from a previous car audio install several years ago). It did the trick- no buzz at all and audio sounds great now. It saved the presentation. The only "negative" is they don't keep them out in the retail area- you need to get them from the car audio installer bay if you are trying to pick one up in-store. It took me a while to get someone who knew what I was talking about. I know they are handy for home theaters with multiple amps on different circuits as-well.

I purchased two of these filters (one for front, one for rear) after getting an annoying squeal that fluctuated with acceleration input through my Kenwood receiver. I noticed this was primarily coming out of my left-rear speaker. After installing these filters, the squeal has been reduced to barely noticeable levels (albeit not entirely eliminated). Installation was a breeze, as I simply unplugged my RCA cables from the factory amp into the radio and plugged the filter to run in series between the radio and the cables (it is even simpler than it sounds). For my installation, I didn't need to hook up the brown ground wires, it just worsened things if they were connected. Overall, good product and I recommend them if you are experiencing similar issues.

I recently replaced my desktop computer, but when I connected my stereo receiver back up to the computer's audio output it produced feedback in the form of an annoying buzz and hum. I assumed I needed to replace the speaker cable with a more insulated cable, but then I read a suggestion in an online forum to try a ground loop isolator as a cheaper alternative. It was delivered quickly and I hooked it up in about two minutes. The feedback has been completely eliminated and I don't notice any reduction in the sound quality. I'm not sure if it would work in all cases, but it was a cheap, easy solution to my problem since the computer appears to be the source of the feedback.

Great little device. before tearing your computer down to see where it's not grounded properly (because it probably is) do s simple check. Are your Stereo and your PC on the same power circuit? If yes you might get that annoying 50Hz to 60Hz buzz from your speakers. This fixes the issue because it was designed to do so. It isolates and traps the ground loop feedback and - magically - no more buzz. It's a 2 minute fix that the stereo folks have know about for decades (because it's an analog issue not a digital one). If you have it though the audio inputs it's easy. They make ones for 1/8in plugs as well but this one fit my need perfectly.

I purchased these to combat a noise issue in my Corvette. When you would turn the aftermarket radio on or off, the factory amplifier would turn on before the radio so you would get a pop from them. Putting these in line removes the physical connection (inside the box is a transformer, so the signal transfer happens over an air gap) that DC power can travel through, and eliminates the turn on/turn off pop. NOTE: THIS WILL NOT WORK IN MOST CASES. My use case is very specific and a misuse of the item, but it gets the job done.

Tried for a home theater intallation where I am getting hum from long in wall wires carrying analog signals. Did not solve my issue but to be fair it may not be a ground loop problem. The package was previously opened and the case popped open when I disconnected it. Maybe it was a return/defective. These are stored in the install bays and I was told it was the last one. The on line ordering with in store pickup was riddled with problems so I gave up and moved on.

I’ve seen good reviews on this unit online and thought it would help with the engine noise I was getting through my speakers but that wasn’t the case. Took my car to Best Buy just in case It was installed incorrectly but it checked out. I returned the item. The unit itself it made from plastic and felt durable. The cable could be a little longer.