From the inventors of the Decimator Noise Reduction products, comes the latest salvo in the fight against noise: the patent pending Hum Extractor™. This extraordinary new invention actually lives up to its claim of eliminating 60 cycle hum without destroying your tone. Not only does is take care of 60 hum in the USA, it can be set for either 50Hz or 60Hz so it is operational in any country. A line frequency trim in included for precise tuning of the line frequency. Dynamic in operation, the Hum Extractor provides total transparency. Outstanding for the musician who gigs abroad.