What panel mount connector for dual (positive/negative) voltage power supply

Hi guys,

(I have tried the search but i couldn't find my answer, hopefully i used the right search).

I'm trying to find a panel mount connector for my phono preamp projects which should have 3 conductors for feeding power from my dual voltage power supply (positive/negative DC outputs plus ground) to the preamp .

I've been trying to locate something for a month now, and the only type of 3 pin connectors i found was XLR female (or male) panel mount connectors which i'm not sure if it's the right thing to use.

Have you any suggestion where should I look for such DC connectors ? I'm struggling with my limited electronic components knowledge...
 
Strictly speaking, the panel mount supply connector on the preamp should be male,
and the plug on the cable should be female. Best practice would be to use a captive
supply cable on the preamp, with the supply end of the cable having a male cable
mount plug, and the supply having a chassis mount female socket.
 
Behringer uses S-video like connectors on their small mixers.
One of them broke and I fitted a miniature aviation connector.
Working fine for two years now.
I wouldn't use a standard DIN or XLR connector since You can switch cables with catastrophic results. If You still want, at least use a 4, 5 or 7 pin that doesn't mate with ordinary gear.