The Mackie MTEST-1 Cable Tester is perfect for live sound venues and recording studios allowing you to easily test commonly used input and output connector types. The MTEST-1 features a 5-way switch that enables you to test each pin including ground even with mismatched connectors. The included probes are ideal for manually checking continuity between any two points. Powered via a single 9V battery the Mackie MTEST-1 cable tester is an essential tool for any sound engineer. Features Test the most commonly used connector types in live sound and studio applications Quickly verify each pins via the 5-way switch Manually check continuity using the included probes Powered via a single 9V battery Legendary Mackie Built-Like-A-Tank™ construction Specifications Connectors: 1/4 TRS 1/4 TS 1/8 TRS 1/8 TS XLR RCA/Phono SpeakON MIDI Banana Power Supply: 1 x 9V Battery