InstallGear Ground Loop Noise Isolator, Amplifier Noise Filter for Car Audio and Home Stereo, Feedback Loop Isolator, Car Stereo Ground Sound Suppressor, Reducer Alternator

After swapping the factory stereo in my '96 Corvette for an aftermarket head unit, I got annoying crackles and pops through the speakers—classic ground loop issue. This InstallGear ground loop isolator took care of it right away. Plugged it inline on the RCA cables, and the noise disappeared completely; audio is clean and quiet now, no interference at all. The case is plastic but feels solid and well-built for the price—connectors are snug, no flimsy vibes. Super cheap compared to dealing with wiring headaches, and it just works perfectly. No complaints; great little gadget for older Vettes with aftermarket upgrades.

I installed a subwoofer, door speakers and 2 amps in my truck. I also installed a cheap 10.1" android head unit. It sounded pretty good, but had terrible alternator whine. It made it so the system was unlistenable at low volume. I did the normal troubleshooting of checking my grounds, making sure the RCA didn't cross paths with any power wires, used a nice shielded RCA cable, nothing would get rid of that awful whine. I didn't have high hopes for this $10 filter, but figured it was cheap enough to give it a try. It worked flawlessly. The amp is now playing crystal clear with no hiss, whine or anything. Just a nice dead silent noise floor. No noticable impact on output or sound quality. Note, as another reviewer pointed out, the label seems to be backwards. The male RCAs plug into the amp and the RCA cable coming from the head unit plug into the female end. Installed in less than a minute and solved my problem 100%.

Unfortunately it did nothing for me, my car produces a ground loop static both off (at volume) and while on (scaling with volume, and with stereo off). Stuff like my AC on will produce a ringing sound, with stereo off completely, applying brakes will make a static pop, etc just frustrating issues to deal with. This was after I spent a good bit of time, and money to upgrade the sound system of the car all at once. I went from poor sounding music, to better sounding music ... with CONSTANT never ending static. I was hoping this product would help me, sadly it did not, it didn't make any noticeable improvement (it did make a noticeable difference) that being it changed the frequency of the sound of the static ... to a more annoying higher pitch ... so all in all I would say this product made the problem slightly worse by changing the pitch of the static.

At the end of the day, it helped noticeably reduce the engine whine in my new car audio system. Now here's the backstory if anyone can relate: A year or so ago I had an aftermarket car stereo installed in my project car, 2002 Celica GT. The new stereo was nice, but it had no balls. So about a month ago I bought new speakers for the front (Rockford Fosgate component) and the back (Kicker full range 2-way), and a new class D amp (Jensen). Also, a powered subwoofer which has its own channel on the head unit. Did all this work myself with some help from my brother who had just done this in his Camry. Long story short, I couldn't get rid of the engine whine (buzzing sound that changes with the RPM's) no matter how many different ground configurations I tried. So this was a last resort quick fix that I did hoping just to hear an improvement. My expectations were not high. The noise reduction is absolutely noticable, and I am very pleased. The hum/buzz is still there, but it's only about 30% of what it was before. It's easily 70% gone at this point. *I should say that in addition to this, I also applied 3 clip-on magnetic ferrite noise filters to the stereo's Constant (power) wire (purchased separately). One last point: I'm a big do-it-yourself guy, so I'm going to keep tweaking the system and looking for ways to eliminate the noise altogether. However, I am not a professional which is evident by some of the other glitches I'm seeing in my newly upgraded system. At some point, I am probably going to take it in to a professional to have it fine tuned and all the little bugs removed. Moral of the story: Do it yourself if you can. If you find out later that you can't, and you have the money, take it to a professional.

Found some other comprible isolators for about double and triple the cost, but was unsure that this would resolve my problem and didn't want to spend too much money on nothing. Took the dive after reading some reviews. Slapped em in the truck in 30 seconds and drove around the block, no more whine. People not having luck with these are probably not diagnosing their issues, making assumptions that this is their problem, and wrongfully accusing their incoming signal as the issue. This is all these are designed to overcome. Not grounding issues or internal amp problems. For anyone with similar symptoms: 2020 F150 with an NavTV A2B Zen Module feeding 4 channels to an AudioControl D-4.800. This amp pre-outs to an LC-1.1500 for a pair of JL 13Tw5 subs. The 800 feeds 2 channels of tweeters and 2 channels of subs from the Morel Virtus line. I was getting alternator whine at roughly 1500 - 2300 rpm, no matter the load on the engine. I verified the whine was not isolated to any RCA input by unplugging and verifying one at a time. Then verified it was not due to any interference from my power and ground wiring by driving without any RCAs hooked up, meaning the whine stopped with no inputs, only power/ground and remote turn on. Plugging the RCAs back in brought back the whine. Installed these in between the zen module and the RCAs to the amp - whine gone. Works like a champ. No noticeable deterioration in sound quality, either.

I installed an aftermarket stereo in my car, and it had an annoying popping issue when I turned the car on or off, switched radio channels, etc, since my car's factory speakers have their own amps. I got 2 of these (each of these has 2 lines, so can solve 2 speakers) for my car's 4 speaker setup, and it immediately solved the popping issue. The problem is that the plugs are incredibly cheap, and one of these leads broke off inside of the rca plug for my stereo's wiring harness. In their defense, i was fitting it in a tight space, but it still snapped off way too easily, and now I cant even plug that speaker into my stereo. Its not the end of the world, since I will end up cutting off the leads and soldering it together, but still, no reason for the leads to be so cheap

I was skeptical how well it would work but wow I was surprised how well it helped the clarity of the radio signal. Perfect for perfect performance cut the static is drastically reduced or eliminated totally . Super easy to hook up looks cool as well ! The size is standard so no issues with not fitting. Using Solar with my inverter sometimes causes feedback or static this stops it by grounding the signal as I understand it . Perfect for any radio If you listen to radio you value this will help big time like the Solar powering it ! Check out my book Solar independent Utility systems manual online in many languages! Most censored book online today. I will never stop using this ! Awesome product that works perfectly with Solar power !

Should've had this installed sooner. To those who say this does not work, check all your other connections, especially your grounds, first. These noise suppressors will not be effective if you still have other issues. Eliminate all other sources of noise interference before saying these don't work. I have a GM GMT-800, a vehicle that's known for alternator noise, especially when going to an aftermarket headunit using the Bose amplifier. I have an Alpine head unit with rearview camera. I shielded all my RCAs, grounded the stereo, grounded the alternator, but the whine was still there. I bought these but were reluctant to take the time to install them due to the mixed reviews. However when I finally took the time to add these, they completely eliminated the noise. I've been driving for a year and a half putting up with the noise. I'm so glad I can enjoy my music without the annoying alternator noise now. Yes, I should have installed them sooner.

De 2 rizas que comore una servía y la otra No . , por lo que tuve que pedir una tercera y luego devolver la no funcional

Struggled with buzz, hum and what sounded like line contact issues after getting new laptop for my PA. Tried everything, and I mean EVERYTHING else. I have been DJ'ing and hosting Karaoke for 37 years and this is the first time I had encountered ground loop issues, so it never occurred to me to ask the RIGHT question; I just kept trying to fix things I was familiar with. Finally did a search and just asked the internet what was wrong without telling it what I thought it was and finally got the right answer: Ground Loop Interference. 24 hours later, I have the InstallGear Ground Loop Isolator Amp Noise Filter connected and everything sounds clear and perfect. I wasted months because I was too stupid to ask for directions and got lost and frustrated for my troubles.

It doesn't cut the noise when the audio is Playing. I connected it even serially and checked but nothing works. It just cuts the noise when nothing is playing on the car stereo.

It doesn't work. I won't recommend it.

Removed the alternator whine but introduced a louder and more annoying noise while significantly altering bass frequencies