[. . . ] The MZA 14 is suitable for use with the following Sennheiser microphones: The adaptor is also a quick and flexible solution if a microphone is to be used for both wired and wireless applications. [. . . ] The MZA 14 can also be used as a cable tester for XLR microphone cables (see page 15). MZA 14 with belt clip Instructions for use Warranty certificate Lock the jack plug by screwing down the coupling ring. This prevents accidental loosening of the connection and annoying noise when the cable is moved. The XLR output of the MZA 14 together with the backelectret condenser microphone delivers the correct signal phase (an increase in sound pressure in front of the microphone diaphragm causes a positive voltage to appear at pin 2 and a negativ voltage to appear at pin 3). With the rolloff filter switched on ( ), the low-frequency signal portions (below 125 Hz) are attenuated, thus increasing speech intelligibility. LED lights up in green: The MZA 14 is properly powered and there is no overmodulation (normal operation). LED lights up in red: A flashing red LED at high sound pressure levels indicates over-modulation of the microphone or overloading of the MZA 14's output. The MZA 14 can also be used as a cable tester for XLR microphone cables. [. . . ] Possible errors: One signal wire is broken One signal wire is short-circuited to the shielding LED does not light up. [. . . ]