I worked for 33 years at Delta Airlines on the ramp , also went to 96 Grateful Dead concerts. But the loudest has to of been hawkwind my ears hurt for 2 weeks . But I did not develop tinnitus in my left ear till after I retired from Delta . I have had tinnitus for the last 17 years but still enjoy my stereo . I am 70 now and very grateful I still enjoy music but not many live shows anymore. When working at Delta I also had season tickets for the Chicago symphony for 6 years what a wonderful experience that was . I probably saw another 100 concerts in addition to the above.
Marc