The Extron GLI 350 Ground Loop Isolator is an active solution that eliminates “hum” bars and common mode noise caused by improper equipment grounding in video systems. It features RGsB, RGBS, and RGBHV inputs and outputs on female BNC connectors, as well as a rugged, metal enclosure.

ADC HUM-1 is a passive single BNC input & single BNC output for eliminating "hum" bars on composite video signals.