| Ebtech Hum X Voltage Hum Filter |
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Product Details
Eliminates ground loop hum. Just connect the HE-2 in between the offending pieces of equipment and your done. Also converts balanced and unbalanced signals. 2 channel box.
Product Reviews
 (3 stars) - doesn't eliminate the hum
Not sure if the product is working properly, because the hum in my set up is still there. The hum is probably due one or more of the dimmers in the house, which this product may not be designed to eliminate (although I thought and hoped it would).
 (1 stars) - 100% won't work to reduce 60 hz hum from Dimmer Switches
Dimmer switches are notorious generators of electromagnetic interference. The Hum X is described as: "The easiest, safest way to get rid of ground loop hum." Well if you are looking to get rid of the hum coming from your guitar amplifier and you can any turned on dimmer switches within 30 feet of your amplifier, than this doesn't reduce that dimmer switch hum by the smallest bit. There is no difference at all. It works for most people because they are using it to get rid of simple ground loop hum involving basic electrical interference. For 70$ it should at least make some kind of difference right? Even if it does work, it's very overpriced.
 (4 stars) - Performed as advertised
I bought this item because our Church video projector would display rolling lines as it projected the video on the screen. I could remove the ground using a plug adapter and the lines would go away. However, removing the ground would remove any protection for our $8,000 projector. I read about ground loops on the internet and saw this product. We received the HUM X last week and tried it on our projector. It worked great. Lines are gone and our project is still grounded thru the HUM X. So far, I would highly recommend trying the product out.
 (5 stars) - Hum-X Killed the Hum
I have always had a ground loop hum caused by interference between my cable TV line and my amplifier. I previously attacked the problem with a ground loop isolater on my cable line which worked fine for awhile, but then certain channels began to be blocked by the isolater. I was able to stop the hum by lifting the ground on my amp with a cheater plug, but to be on the safe side, I thought I'd give the Hum-X a try since it's supposed to kill the hum without lifting the ground.
I plugged the Hum-X into the wall and plugged my surge protector into the Hum-X, and the hum was gone. For me at least, a great result. If you want to be cheap and don't mind an ungrounded component, get a cheater plug for $2. If you don't mind spending $65 and want to play it safe, the Hum-X might be just what you're looking for: hum gone, ground intact, and no channel interference. Perfect.
(5 stars) - 100% Satisfied
Assembled a low budget home theater system using a Philips universal/region free DVD player, a small vacuum tube amp and a Samsung monitor. The monitor added a 60hz hum. After reading a few web articles about ground loop hum and what to do about it I had two problems: a headache and a hum.
The negative reviews of this product seemed to boil down to the receipt of a defective example of an otherwise sound design so, fingers crossed, I bought one. It works and, while I hesitate to call the creative application of the laws of physics a miracle, I think the following from Sir Arthur C. Clarke apropos:
"Any sufficiently advanced technology is indistinguishable from magic."
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