The Whirlwind Audio Line Tester belongs in your toolbox! A versatile cable tester built to check many varieties of cables, the Audio Line Tester can test most cable combos of XLR, 1/4", or RCA effectively. It's great for troubleshooting, giving you a quick, easy way to find shorts, opens, and polarity reverse issues with your cables. The hands-free design lets you move the cable you're testing to locate intermittent trouble spots. An onboard LED indicator lets you know if you have sufficient testing power, and an On/Off switch is included, and a belt pack puts the Audio Line Tester where you need it. Whirlwind Audio Line Tester Features: Checks a variety of cables (XLR, 1/4", and RCA ends) Finds shorts, opens, and polarity reverse Hands-free design LED indicator On/Off switch Belt clip The Whirlwind Audio Line Tester belongs in any audio