I have three sets of Bose A20 headsets. Two have the standard GA plugs and one has the Bose 6 pin ship powered plug. They could use a refresh kit ($45) from sportys, since the ear pieces are showing some wear. Text with questions. ********THE TWO WITH GA PLUGS ARE SOLD. I STILL HAVE A SINGLE HEADSET WITH THE NEMO PLUG THAT USES SHIP POWER.*******