Electro-Harmonix The Silencer Noise Gate / Effects Loop Pedal Noise Gate Pedal With Built-In Effects Loop, Variable Threshold, Release, And

BESIGN Ground Loop Noise Isolator, Ground Loop Buzzing Noise Filter, Ground Loop Buzzing Noise Elimination For Car Audio And Home Stereo System With

Electro-Harmonix Silencer Noise Gate/Effect Loop Pedal