CABLE CHECKER Never play the cable guessing game again. With a simple 5-way switch to test every pin, even with mismatched connectors, the battery-powered MTEST-1 is an essential tool to have in your bag for every gig. You can even manually test continuity between any two points with the included probes. Equipped with the most commonly used connector types, including TRS, TS, XLR, RCA, Speakon, 3.5mm TRS, MIDI and Banana connectors.