A 180° type 5-pin DIN connector, with a 5A rating, that is commonly used for analogue audio signal transmission, including for SYNC and MIDI and for legacy hardware for serial ports, etc.
The sockets differ from the current photo, being a more solid and "boxy" design which I find much better, since it seats much more rigidly against the PCB than the open backed type, resisting movement during plugging/unplugging, They are great value particularly in bulk and no complaints about the quality
