Phatronics XLR Cable Tester is a completely hand-made, no-nonsense tool built for studio recording and live sound professionals. Designed to quickly diagnose any standard microphone cable, it features XLR input and output jacks for fast, reliable testing right in your signal chain.

Three bright LEDs clearly indicate the status of pins 1 through 3, giving you instant visual confirmation that your cable is wired and functioning correctly. Individual on/off switches for each pin allow you to isolate and test connections one at a time—perfect for tracking down intermittent faults or stage-side emergencies.

Housed in a super-sturdy 3D-printed enclosure, this tester is built to survive the realities of gig bags, road cases, and crowded studios. Simple, rugged, and incredibly effective, the Phatronics XLR Cable Tester is the Swiss Army knife of studio recording and live sound—the tool you’ll reach for when everything has to work, right now.

Comes with 9v Battery installed.