Up for sale is a used Ebtech Hum Eliminator 8-Channel processor in near mint condition. This unit has very little evidence of use. EBTECH HUM ELIMINATOR: The Easy Way To Finally Silence AC Hum in Your Sound System Forever Do you hear a hum or buzz in your audio signal? Are long unbalanced lines across the stage creating problems? Hum Eliminator can silence AC hum forever Most AC hum (60Hz in the U.S.) is caused by ground loops which act like radio antennae picking up hum and noise Hum Eliminator completely eliminates ground loops, making it impossible for signal lines to pick up AC hum and noise No buzz, no hum, no signal degradation Simply route your stereo signal through the dual channel Hum Eliminator Use the 1/4" TRS "smart" inputs and outputs Please email with any questions.