iFi SilentPower - GND Defender - Intelligent Ground Control, IEC Connector Ground Loop Remover

I just bought a new tube amplifier and it hummed right out of the box. It was audible three feet away from the speakers, but not at my listening position. Being an IT tech guy, this bothered me even though I could just ignore it. I had two components in my hifi that used three prong AC cords, the new amp and my DAC. They were both plugged into the same Panamax line conditioner and I THOUGHT that would share a common ground and not be the issue. Initially, it made sense and I thought the tube amp was to blame, however after removing the interconnects from the DAC, the hum went away.Long story short, if I plugged my DAC into a different outlet (same circuit), the hum went away 95%. I bought this product and then connected the DAC back into the Panamax and the hum is completely gone. This was worth every penny since it restored my sanity. Hopefully, this save other hifi enthusiasts hours of frustration and troubleshooting. You only need one audio component connected to a ground and the others can be "lifted" safely using this product. You should not use cheater plugs.

OK, I must admit, I bought this as a last attempt to solve a bad 60Hz hum on my brand new Home Theatre sound system, which I'd identified as being caused by a ground loop between my TV and my AV processor, via the eARC HDMI interconnect. After a lot of research and YouTube watching, apart from physically "lifting" the ground from the TV, I did tried several solutions, including the HDMI silencer from iFi as well but nothing worked.Then I decided to buy try this product but was very skeptical it would make any difference. But to my surprise, it worked like a charm! I used it to plug the TV's power cable and immediately, the hum was absolutely gone!If this hadn't worked, I would need to run the TV's power cable down to the same TrippLite Isobar where the AV processor was connected so both would share the exact same ground, which would ruin the aesthetics because the cable would be visibly hanging on the wall. So, count me as a happy customer.This product might not work on every scenario, but it definitely worked better than I expected in my case.

This little item is magical. I have a high end gaming pc with an rtx 5080 gpu. When I have my KRK monitors plugged in and the 5080 fans start spinning I can hear interference and sound coming from my left speaker that is from the 5080. Odd that no noise from the right speaker just the left speaker. So I ordered this item and plugged it into my left speaker and just like magic the noise is gone! I saw another review that says it worked for them so I tried it and it is amazing. It is a little pricey for what it is but it’s better than redoing my electrical system in my house. If you have noise in your speakers from your gpu give this a try!

I have recently overhauled my stereo setup, and part of that project involved replacing an old Polk DSW660Pro sub with a REL T/9x. It's a great sub, it integrates with my music far more seamlessly than the old sub did. But ever since the switch I have a low-grade hum coming from it whenever it was powered on. Tried a bunch of different things: I tried connecting both the high level Neutrik connection and an RCA cable to the .1LFE input; I tried different subwoofer cables, including expensive ones with chassis ground wires; I tried grounding other components in the chain; I was about ready to give up. However one last test I did was to remove all of the audio connections from the sub and power it on- in doing so, I noticed the hum was still there. So this was definitely a ground loop issue somewhere in the power chain. After reading other reviews here, and seeing that other REL sub owners had solved their issues with one of these, I decided to take a chance, figuring worst case scenario if it didn't work I could just return it. As soon as I plugged this into the back of the sub and connected the power cord into the other end, bingo! No more hum.I saw others complaining that this didn't fit snugly in the input socket on their component, but it was a tight fit in my case.One test you can try before you buy this is to take a cheap 3-prong female to 2-prong male plug adapter - you can buy one of these for less than $5 - and stick it on the end of the power cord for your affected device, then plug that into the socket. If your hum is gone, then this product will almost certainly work for you (and it will be much safer than leaving your device ungrounded with a 2-prong connection.)If you're struggling with hum in your HT/stereo setup, I can at least recommend giving this a try. Ground loop can have all sorts of different causes. so there's no guarantee this will work. But given that this item is available on Prime and a number of different sellers offer free returns, it's worth taking a chance on if you've had no luck with other suggested remedies.

I have tried everything to eliminate ground loop RFI/EMI in my Dynaudio speakers. Nothing seems to work. I have tried multiple devices like the Hum Eliminator by Pyle, TRS/XLR cables and more. I read the reviews on this item and went for the buy. Unfortunately it did not work for me. I have taken my speakers to other spots and the hum/ static buzz is not present. Now where I have my sound system hooked up is where all the hum/buzz happens. So weird and frustrating! I Wish this item would have worked for me honestly. However this is the rating I’m giving it. May work for you. But did not work for me.

Just built a new PC and uses to produce music on a laptop. When I tried to use my monitors after building the new PC it had a bad humming/buzzing noise to the speakers. I did some research and found that I needed a ground loop blocker. These are a bit pricey and I ended up getting two ( one for each monitor speaker ) so I was a bit of a risk to take. But am I definitely glad I got these! No more buzz and I can start using my monitors again for music production!Definitely get if you're having ground loop issues!