Exterminate ground hum at the source! Filters unwanted voltages and currents that cause ground hum at the source while maintaining an absolutely safe ground. Simply plug Hum X into the offending outlet and plug your equipment into Hum X. Also has an LED indicator.
Checks XLR, ¼", RCA, 1/8", TT and MIDI cables for continuity and/or intermittent connections. Detects opens and shorts for each pin and holds LED reading so you know exactly where the problem is. Other features include test tone generator (++4, -10, Mic), phantom power detector, grounded XLR shield detector and cable wiring display. Two AA batteries required.