Breakout cable for the stereo microphones MSTC 64 U (ORTF) and CMXY 4V U (X/Y microphone).
The combination of this adapter cable with its inverse counterpart (AK 2U/SU: 2 * XLR-3F to XLR-5M) and a KS 5 U (XLR-5 extension cable) makes it possible to use just one cable for a stereo setup.