I stepped on the headphone plug of my 1971 Koss ESP-9 a couple of decades ago and decided to try to resurrect them this year. When I discovered that the big parts places don't stock that Amphenol line any more, I thought they were dead forever.
Then I discovered that the Stax connector might work and that Moon Audio had some.
The backshell was shorter and there was no strain relief but the plug was a perfect match. I drilled it out a bit to accept the old strain relief and ended up with a good solid repair.