On occasion, usually when running from my laptop to a video monitor, I will get a buzz/hum. I run Bose L1’s, the sound is normally very clean so any hum or buss is annoyingly noticeable, at least to me it is. I now always run my laptop through a Hum X and, for more than a year no buzz.

Last week, while running 2 L1’s I got a buz off one of them that was plugged into a separate AC source. I pulled the Hun X off the laptop and put it on the offending L1's ACconnection. Gone, and luckily no problem with the laptop/video connection!

Jut in case I pick up noise from 2 sources, I bought a second Hum X. That reminded me of my single complaint… the price. You would think this thing should cost half the price but it’s a simple fix that works.

I would recommend every DJ keep one of these handy, just in case.

I simply works. I've read about HumX when I was considering purchasing some iso-trans to strip terrible hum noise from my mixer to my recording computer. Problem is that your tone changes with the iso-trans. I plugged my power strip into the HumX that carries my keyboards and effect processing on it. For once I had clean audio without lifting the ground and doing a 60hz dip in my audio recordings. I'm goint to spread the word on this device as I work in a broadcast facility and often have hum during our news live shots.

The Hum X did not work for me which was suprising since I was very sure it would based on all the information I've read on it. My problem was that I have two stomp boxes connected to a AC adaptor via a daisy chain which is giving me quite a bit of noise. I tried plugging the adaptor through the Hum X and it had absolutely no effect whatsoever. And I know for a fact that it is that power adaptor that is the source of the noise because when I disconnected it and powered my pedals with 9V batteries the noise was completely gone. Just to be safe I tried the Hum X on all the other components of my rig and there was still no improvement at all. Perhaps I'm not understanding the intended application of this product but I after looking on the ebtech website, I really don't understand why it didn't work. I'll be returning mine promptly.

I play 1-3 nights per week in a band. Two or three places we play have terrible ground loop problems and the hum-x does an amazing job at eliminating the buzz coming through my Fender Twin. You still need a noise suppressor to get rid of noise coming through your guitar or pedals, but this thing really conquers the ground loop hum. Excellent, excellent product.

I bought the HumX to kill a ground loop when using two amps hooked up to a stereo pedal board. I had been using an isolation transformer (Ebtech 2-Channel Hum Eliminator) that worked fine, but required additional cabling and on-stage clutter. The HumX works just as well, and is a nice clean solution.

I'm going to buy a couple more. One for my PA/drum setup, and one for visiting musicians (multiple keyboards into one amp, etc.) that show up to practice and have ground loop issues of their own.

This will not cure other kinds of hum issues, but works great for ground loops.