Metra - Ground Loop Isolator - Black

This Noise Suppressor works. If you do not know how it works, because it lacks instructions, you may have to experiment to resolve your interference issue. Before the amp or after the receiver head, mmm that's the question. I installed this product in a 1978 Chevy Corvette with the main problem with engine noise. Let's see, 1978? The year of the Cat?

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.

So this is a product that works great depending how you use it for light noise this should work fine with out grounding it how ever in my case it was just ridiculous noise but, after grounding it to the cars chassis all noise is gone , its easy to ground just tie the two wires hanging from the box together locate a ground wire usually black!! And tap into it tap don't cut!! Meaning splice to get some wire to connect the box too and boom grounded and all noise gone ! :)

The product does what it says. No instructions but if your buying one you probably know whats going on. Cant say much about it, however the audio techs you have at the Boynton Beach congress are awsome. They know who they are. Very knowledgeable went above and beyond to help me do a custom audio job as far as whats needed ,doing the research looking for every possible options. So to the i give 5 stars

Does what its supposed to if hooked up right. RCAs from your stereo to this unit then unit to your amp and as for the ground wire i just taped mine off

Mostly reduces the hum between an old Dual turntable with a 5 pin din connector adapter and old receiver. Not sure what to do with the two brown ground (?) wires...no instuctions.

Hard to fine, literally called a store that specializes in DIY (do it yourself) fixing technology and they had no idea what I was talking about and told me to check Home Depot. I needed this because of a "Hmmm" noise coming from a car sub woofer I installed in my home. The aux from this device is connected to my television, while the output is going to the cars audio amplifier. The ground wires from this device is also connected to the amplifier in the ground terminal. Problem fixed!

Was having an engine whining noise coming through my car speakers was installed between the head unit and the amp whine went away. Works like intended.