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?

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

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!

This ground loop isolator completely filtered all the electronic engine noise from the speakers 100 percent. I wired it between the RCA cables from the head unit and the crossover input.

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 ! :)

As long your vehicle does not have an excessive about of poorly grounded components. Grounds should be clean and tight before a device like this is used as a bandaid for the real problem. However, it serves it's purpose when you can't find the source of the interference.

This ground loop isolated really cut out the whine and buzz I had when I put a new deck and upgraded speakers in my car, I was skeptical at first but overall it performed as stated and was a good buy for the money

We had a stereo installed in our Mercedes Sprinter van and it sounded awesome except for the whining noise that followed the RPMs. I spoke to the installation shop and he said it was probably because our old center channel was still installed and had old wiring. Well, removed that and it was still there. We had taken the van back a couple times but I didn't want to bother the shop and I personally have done installations before, just didn't have the time to do the full install this time. Long story short, I picked up 2 of these to use with our 6 channel amp. I didn't bother putting any on the low pass channel as I didn't hear any feedback from the subwoofers. After installing these, the whine was completely gone. Nice clean sound! I've only had them in a short time, so time will tell if they last but the initial impressions of this are very positive.