The government probably instructed the RAAF to issue ear plugs cause they are cheaper than a Bose or LightSpeed Zulu?????
Now in all seriousness, I have been using ANR headsets since 1997. I use to be fatigued after instructing for about 6 hours in a C152. Once I started on ANR there is no way I could go back. Trust me after my headsets went in for a service it was terrible to use non ANR. All up, my hearing from Tests is in the excellent range and there is no evidence of deteriation, even with me being in my very early forties.
