The Cable Tester is the only IEM cable tester that can test for all possible cable-related problems. No matter what brand of IEMs or cable you own, The Cable Tester is designed to work universally. Using the device's channel selector to sweep between ground and positive allows you to not only check for continuity in the wire, but also for shorts. If you are experiencing issues with your IEM cable you need to know exactly what the problem is. Also, testing your IEM cables will ensure that you know that whatever problem you have lies in the cable and not the earpieces. This knowledge can save you a lot of time and money in the long run.