Can anybody please help me identify a plug socket


I’ve recently acquired an Acorn Audio Comparator which is an old box that allows you to route between audio sources, amos and speakers in any configuration. The problem is that I can’t identify the input sockets on the back and can’t find the corresponding connector.

I think the mains socket is a Bulgin 3 pin but it’s the round metal sleeved sockets I’d like to know about. If anyone can help I’d be very grateful.

https://photos.app.goo.gl/cNPPBJmNJCK8YSPe6

Many thanks

John

shed_dweller
That is a seriously old piece. Those are like two pin Din sockets. Go to Digikey and search their site.
Looks like a (2 pin) Cannon plug.
Thanks for your help guys. The only 2 pin din I could find has a large flat pin and s small thinner one. 
The cannon plugs look a bit closer to mine but the sockets I have are not threaded. I found a 2pin xlr type cannon plug which look very close. Could it be an for type socket, only there isn't a catch on it, only the thin channel in the sleeve. 

Any other ideas?
Looks proprietary. Good luck with that.
I don't think I'd trust it even with the oem plugs.
Those socket look like mil spec circular connectors for microphone connections.

https://uk.rs-online.com/web/c/connectors/circular-connectors/mil-spec-circular-connectors/?applied-...

https://www.ebay.com/itm/New-Unused-14-9-Plug-2-pin-Connector-f-WW2-Old-Vintage-Aircraft-Radar-Radio...

If you want to use this compactor, my suggestion is re-terminate those inputs to rca or xlr socket.
UPGRADE TIME TO RCA, GOOD LUCK
Honestly, I would not want that thing anywhere " in " my system. Why would I want to " dirty up " the signal of what I put together for " cleanliness. 
Audio Comparators are widely used in audio/Hi-Fi store.
@imhififan , yes they are.......and ? I still stay with my point.
Honestly, I would not want that thing anywhere " in " my system. Why would I want to " dirty up " the signal of what I put together for " cleanliness.
@mrdecibel
I totally agree with you, KISS is best!
But I have an crazy idea that one day I want to take all the spare audio gears ( turntables, tuners, R2R, 8 track, cassette decks, cd/minidisc players, receivers, preamps and power amps and speakers) out of storage and set them up with a comparator in my basement...

Happy holidays