Hosa GLT-255 XLR Female to XLR Male Ground Lift Hum Stopper

Hosa GLT-255 XLR Female to XLR Male Ground Lift Hum Stopper

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/Output, Uses 1:1 Isolation Transformer

BESIGN Ground Loop Noise Isolator for Car Audio/Home Stereo System with 3.5mm Audio Cable