Woodstock was very loud. So were two Jimi Hendrix concerts; a number of Jefferson Airplane concerts; Jeff Back. But the loudest, the one that hurt me in the moment and continues to, was Junior Brown at the Turning Point, a tiny cellar club in Piermont, NY. I sat ~11 feet from him. He only used one Fender Reverb Twin, but cranked it like crazy. By then I used earplugs, but forgot to bring them (oh, well). My ears started ringing that night and never stopped.
Not complaining. It’s actually OK. I still can listen to music (sometimes moderately loud for short periods) and hear it/enjoy it.