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Amazon.com: PYLE-PRO Compact Mini Hum Eliminator Box - 2 Channel Passive Ground Loop Isolator, Noise Filter,AC Buzz Destroyer,Hum Killer w/ 1/4" TRS Phone,XLR Input/Output,Uses 1:1 Isolation Transformer - PHE400 : Musical Instruments
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Amazon.com: Dual Transformer Lsolator Hum Eliminator denoiser Noise canceller With input attenuator connection guitar and bass - 1/4 inch impedance transformer equilibrium and non-equilibrium XLR connector : Musical Instruments
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