This versatile cable tester checks most varieties of audio cables. Can test cables with any combination of XLR, 1/4' or RCA Phono plugs for shorts, opens and phase. Hands-free design allows manipulation of cable to locate intermittents. An On/Off switch is provided, with LED to indicate sufficient testing power. Tests for Continuity, pin assignment, and phase reverse. Runs on one (1) 9 volt battery (not included). Belt clip included.