Hi, have you noticed any increase in volume due flying? I got this 10 months ago and it was stable the whole summer until I started flying again 5+ months ago.. now it seems its slowly getting louder. Dont know if its due flying but I have protected my hearing with earplugs under headset and cockpit is about 70db during cruise.
It started after I finished flying - as far as I can recall! Like others have noted, my audiometry is OK - for someone my age, of course... (mid sixties)