Their hum eliminators use their own custom-made isolation transformers that break loop antennas that create the dreaded ground loop hum. The hum eliminator can also convert back and forth between balanced and unbalanced cables and prevent them from acting as an antenna for noise. Its cold rolled steel housing is also extremely durable. A great accessory to have on hand for every concert and video shoot. Features Designed to resolve ground-related hum and hum in pro audio, camera and musical instrument amplifiers. Custom Homemade Isolation Transformers Converts back and forth between unbalanced and balanced cable types. It is not intended for use on the mic, instrument, or powered speaker line level. Suitable with smart 1/4 "connectors and XLR connectors. Passive: Does not require energy. Specifications Not designed to combat the 60 Hz hum caused by guitar pickups. Dimensions: 4.7 '' x 3.2 '' x 2.8 '' (L x W x H). Made in the USA
