Behringer cable tester ct100 behringer ct100 p make sure every cable in your nbsp rig is in good working order with the behringer cable tester ct100 this incredibly portable audio solution is a must have for sound engineers and musicians alike p p the ct100 accepts every type of cable likely to be used in a recording or live performance p p because this handy tool runs on two aa batteries you can carry it in your pocket and be ready to troubleshoot at a moment s notice