Ebtech Swizz-CT Swizz Army 6-in-1 Cable Tester
Checks XLR, 1/4", RCA, 1/8", TT & MIDI cables for continuity and/or intermittent connections. Also detects opens and shorts for each pin. Other features include test tone generator (+4, -10, Mic), phantom power detector, grounded XLR shield detector and cable wiring display. Two AA batteries required. Two-year warranty.