Use your 6-pin LEMO Plug headset in a standard GA plug aircraft. This plug is a simple adapter that provides microphone and headphone utility. The power portion of the LEMO plug will not be utilized, so you’ll need a power source. The Bose A20 LEMO headset has a standard battery pack on it. Simply put 2 AA batteries in the battery pack and use this adapter with the Bose A20 LEMO headset in standard twin plug (PJ) intercoms. This will also work on the David Clark One-XP and David Clark Pro-XP headsets.