Ebtech's HE-2 Hum Eliminator eliminates system noise and ground loops quickly, easily, and above all, safely! Extremely high quality transformers isolate circuits, keeping grounds intact while breaking troublesome loops and balancing unbalanced gear. 1/4" TRS in and out. Features: Eliminates AC hum and noise quickly and easily Automatically converts back and forth between balanced and unbalanced lines Allows using professional equipment for long signal runs free of hum 1/4" TRS "smart jacks" inputs and outputs Safely breaks ground loops while leaving all signal grounds in tact No dangerous ground lifting Automatically translates signal voltages to match differences in ground potentials, avoiding clipping Less than .005% THD @1kHz Crosstalk better than -97dB Condition: Brand new, Vision Guitar is an authorized Ebtech dealer!