this original Neutricon was genius in that it contains the same contacts on male and female connector and that they clean each other, so we had very little failures in the 30 years we are using them. except that:
- its possible to insert a 1/4 connector and it can bend the contacts – but you can bend them back, carefully!
- if one of the male contacts stands out, it can bend all the female contacts it meets (but not reverse 🙂
here is a video about this problem
so Neutrik changed it to classical male-female contact pins long ago, and now we are forced to follow this upgrade
here is a video about the upgrade