This took away all of my highs on July 23, 1980
http://www.black-sabbath.com/tourdates/1980tour/
Some shooting of shotguns when young didn't help either. Still have decent hearing but a little nerve deafness (cannot separate dialog when there is a lot of background noise). Now I wear ear plugs and then electronic ear muffs over them.
Wish I could team with CalOSHA to sue the California DOJ for their ban on suppressors, you guys in free states have it made.