Behringer HD400 Ultra Compact 2 Channel Hum Suppressor

Eliminate “hum” and extraneous noise quickly, easily, and reliably Romp the ground loops safely while maintaining optimal sound quality 2 independent channels for 1 stereo signal or 2 mono Automatically converts unbalanced signals to balanced signals without signal loss Do not cancel the safety objective of the polarized plug or grounding. A polarized plug has two blades, one of which is wider than the other. A grounding type plug has two blades and a third ground pin. The wide blade or the third tooth are provided for your safety. If the plug provided does not fit in your outlet, consult an electrician to replace the outdated outlet.