Recently got issued a Bose A20 aviation headset from my squadron, went to test it out on the aircraft and the mic won’t work. I’ve been told I need an impedance adapter or a new mic. I currently work on C-17s. Anyone have any links to the correct impedance adapters or mic I need? Or have information that I may be missing? Also I may be retraining to AWACS soon so if anyone has any info on whether my headset will work for that or not would be appreciated too. Thanks.