Aviators Headset Question

[sheepherder]

I was given this headset back in the '90's when I was a Cargo Courier on our [328 TAS] C-130's. I didn't use it to listen or talk, just to cancel noise (C-130's are loud).

I don't even know if it was USAF issue or USA helicopter. But I kept it and have used it occasionally when shooting.

Now my hearing is deteriorating and although I use a set of cheap Wal-Mart mini-headphones plugged into my flat-screen TV, I would like to use these.

Problem is, the plug is bigger than a 'standard' 1/4" stereo plug, something like 7.2mm.

I've been Searching online for an adapter, but I don't really know avionic nomenclature. There seem to be dozens of adapters, all different.

So, I know there are aviators here, maybe one could tell me what I need in an adapter to go from this headset to a 1/4" stereo jack. (I have 1/4" to 3.5mm adapters).

Astrocom 10178
PAD MX-2509/A1C

I don't need the talk/mic function, just the stereo 'listen' function.

Thanks for any help you can give!