Hosa GLT-255 XLR Female to XLR Male Ground Lift Hum Stopper

Removed an annoying buzz from my amp. Really good price compared to how expensive some of these get. Its high quality, and wont easily fall out of your amp. Really good connection. All you have to do is plug it in and you’re set. It is a bit bulky and tall but shouldn’t affect anything.

The ground lifter made my noise issue much worse. When I tried to return it, Amazon told me the product is not returnable and directed me to Hosa's website. Hosa's website has a broken CAPTCHA, and as a result, it is not possible to file a warranty claim.

I want to counter some of the bad reviews I see on Amazon, because this did just what we needed it to do. We have connected a social hall sound system to and from Zoom so that we can host hybrid meetings. This caused a constant low-level noise to be heard in the hall. We ascribe that to a ground loop, which we broke by inserting this device into one of the connection runs (sound system output to Zoom microphone input, to be precise). The noise is gone now. FYI we are using a Micolindun external sound card USB hub and an HP laptop to run Zoom.

Bought an expensive Adam subwoofer for studio monitoring, and it was completely useless because upon first time plugging it in it had humming and a pulsating. And despite using a furman power conditioner and trying various fixes, nothing worked. I ordered this as a test, and IT WORKED immediately and it’s still connected. Amazing product! How is it not $40 or $80 like all others? Good job Hosa on providing a solution for everyone.

I am VERY disappointed with this product. I bought two of these to use for my studio monitors when trying to debug ground loops, and discovered way too many problems for such a simple product:== Wired incorrectly ==First and foremost, this "ground lift" adapter doesn't even lift the ground... The metal housing is electrically connected to the housing of each each end via the screws on either side. This would be less of a problem if it weren't for the fact that the connector housing ground is connected to the ground *pin* on both sides. What does that mean? This is just a M to F XLR coupler. Which XLR cables never need. What.I fixed this by opening them up, and de-soldering the wire that connects the ground pin to the connector housing. This was not a single mistake; BOTH units had this issue. Unless this is fixed, these are nothing more than a placebo.== Quality Control ==Not to be confused with durability. I had two major issues:1. One of the units had a receded pin on the male side. This didn't always contact, which made it seem like one of my studio monitors was flaky. I had to get needle nose pliers to pull it "out" further so it would properly contact. I don't have pictures of this one.2. I've attached a picture of the internal plastic on the male side of both units. As you can see, one is clearly cracked.At the end of the day, there's no way I could recommend this product to anyone. It is a poor quality piece of equipment that isn't even wired properly to do its job.

Fantastic!! I was so annoyed by the humming noise my NEW studio KRK Rokit8’s we’re making. I searched online for different remedies and decide to go with these affordable HOSA groundlifters and it minimized/eliminated the terrible noise I had. It didn’t fully eliminate the hum if I have the speaker volume all the way up to +6dB but if I turn it to +3dB it practically does! These are a great investment! The next day delivery makes it even more worth it! I almost spent +45 a piece on another device that does the same thing, but I’m glad I went with my gut and chose these! HOSA Technology my ears thank you guys!!!

Keep in mind that only the ground PIN is lifted, not the shield. This is why for a lot of people this won't do it because the shield might act as another ground connector.It's unfortunate, I think if you buy an actual "ground lift" they should stop the shield connection too.

I recently purchases a USB audio interface for my computer (upgrading from Firewire which has become obsolete, but the old Firewire interface had no problems with noise/hum). With the USB interface, I was getting a noticeable noisy/fluttery sound out of my subwoofer that made it impossible to mix & master audio properly. I thought the device was defective, returned it, got a new one, and had the same problem. Customer support for the audio interface suggested this product. I was skeptical but it completely fixed my problem. The only reason I'm giving this 4 stars instead of 5 is some customers are saying it breaks after a while, and I've only had it a week. If this solution lasts in the long term, I will happily give it 5 stars.