Thanks SASless, 28 years and 12,000 hrs and I thought I was alone with the ringing ears and missed conversations. I used a DC headset for the first 25 years, Peltor for 3 and now have a Bose X. I am hoping the Bose will save what I have left.
I'm not sure I can pin it down to one type of A/C, although the old Bell 47 B1 had quite the bark.
