Anticoustic Antisonic headset
Just bought one of these off eBay. The spec appears to be 2 x 300 ohm receivers (not sure about the wiring configuration) and an unamplified dynamic microphone. Connector is an AM671 NATO type. Is this a normal spec for an aviation headset ? Apparently it has been used in a Chipmunk at some point so it could have military and civil history.
Thankyou.