This high-quality David Clark product allows you to use your dual-plug GA headset in single-plug helicopter instances.

Plug your dual-plug general aviation headset into this converter and use it in most helicopters. Fits your dual GA plugs into a helicopter intercom single-socket.

This unit converts the plug size only. It does not convert impedance. Most helicopter intercoms have the same impedance as GA intercoms (but not all). Military intercoms use a different impedance. Unless you have an impedance-switching headset, please make sure the intercom with which you plan to use this product has the common impedance to GA and most helicopter systems.