Morley MHE 2-Channel Stereo Hum Eliminator 2-Channel Ground-Loop Hum Attenuator With XLR And 1/4-Inch I/O And Custom Isolation Transformers

ART DTI 2-Channel Hum Eliminator 2-Channel Hum Eliminator With XLR, 1/4", And RCA Inputs And Outputs

Pyle 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/

Electro-Harmonix Hum Debugger Hum Eliminator Pedal Hum-Eliminating Stompbox-Style Pedal

Hum Eliminator.

Rolls HE18 2-Channel Audio Hum And Buzz Remover Passive Hum And Buzz Remover With 2 Channels

Sescom IL-19-MINI 3.5mm Stereo Mini I/O Hum Eliminator