Them ears
A little over 40 years handling rotary (14,500 hrs) plus another twenty sat in fixed wing piston, turbine and jets ... and yes, I have acquired the dreaded 'ear buzz' but have to say far from bad enough to have any adverse effect on my hearing while flying. In fact there's a small side benefit as I can hear the heart beating when sitting quietly and quite enjoy the steady drone at low rpm. Usually circa 165 resting and 10 or more higher standing/walking. Hope that's normal. Dennis K.