Nady HE-1 Hum Eliminator

The HE-1 from Nady is a compact audio hum eliminator that eliminates 60Hz or 120Hz AC hum from an audio signal by up to 20dB. The unit has a completely passive design that breaks ground loops safely while leaving signal grounds intact. It has a dual channel I/O interface with 1/4" TRS connectors, and can convert automatically back and forth between balanced and unbalanced lines. The result is high-quality audio with as little noise and distortion as possible.