Detail 01
Transformer isolation
Audio passes magnetically while the ground connection is broken. That physically stops the loop rather than filtering the noise out afterward.
Product detailSKU #1273887987175
ArtDual Transformer/Isolator Hum Eliminator
Independent shopping perspective
The Korena take
A two-channel transformer isolator for killing ground-loop hum between gear. Buy it when you have a buzz to solve, not as a general upgrade.
Strong match
Who this is for
- Killing ground-loop buzz between mixer and powered speakers
- Isolating a laptop or media player feeding a PA
- Stereo pairs, since both channels are covered by one box
Consider the trade-offs
When to look elsewhere
- Hum caused by bad cables, pickups, or nearby lighting dimmers
- Anyone needing gain or level control — this only isolates
- Players wanting an effect; despite the tag, it shapes nothing
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Dual channel
Handles a stereo pair or two separate mono feeds in one box. No need to buy a second unit for stereo.
Detail 03
Passive design, no effects
It removes a problem rather than adding a character. Your signal should sound the same, minus the hum.
Detail 04
Inline between two devices
Placement matters. Put it at the point where the two grounded devices meet, not at the far end of the chain.
Detail 05
$99.99 for two channels
Roughly fifty dollars per isolated path. Cheaper than chasing a hum through replacement cables and power conditioners.
Final check
Know before you order
- 01Confirm the hum is a ground loop first; lift one device's ground to test
- 02Check connector types on both devices so you buy matching cables
- 03It adds no gain, so keep source levels where they already were
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will this stop hum from my guitar pickups?
No. Single-coil pickup hum is picked up from the air by the pickup itself. This solves ground loops between two connected pieces of gear.
02Where in the chain does it go?
Inline at the junction between the two devices creating the loop, usually where a mixer or interface meets powered speakers or an amplifier.
03Does it work in stereo?
Yes. It is a dual unit, so one box covers a stereo pair or two independent mono signal paths.
04Does it degrade the sound?
It is a passive transformer path with no gain, EQ, or effects. The intent is to pass the signal through and break only the ground connection.
