I am a BIG EARPLUGS user. In fact I have 3 times been to "group sessions", where a bunch of musicians had their ears filled with blue stuff and sit very still for 10 minutes to get custom made earplugs with almost flat frequency response. I saw this way, that different people have extremely different ears. Some have narow and others wide auditory meatuses. Some have them turning like a spiral others have them almost straight. Mine are wide and straight (maybe due to ears of using the big yellow foam "blocks all tribble" tradesman ear plugs?). Anyway, because of the shape of my auditory meatus I could not use these. Well I could, but I would not, since every time I smiled, the would "leak", and I would get a burst of sound comming in. I don't want to stop smiling.
Anyway, after ears with the "big yellow", I have grown used to the sound of them. Due to my wide auditory meatus, I have also only very rarely had irritations when using them. And here comes why I write this. I have never heard of people splitting their eardrums from using earplugs. It may have happened, but I believe it would cause much talk about. Personally I have often adjusted them by pushing them a bit further in (but remember my unusually wide auditory meatus may make this easyer). I am one of those people, who once in a while can hace trouble getting them out (it is good to play guitar - nails

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And as I said, I have used them so regularly, that my ears (brain I believe) have addapted to the sound of them. To me that is the natural sound of loud music. I also believe, that a sound enginier, who is used to these earplugs will be able to make usefull live sound for a rock band. Just do, what you always do - get it to sound "normal"

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Good luck to all. I glad there was a break thru in this subject about 10 or 11 years ago. Before that it was taboo, and musicians and sound enginiers would go with untold "pain", because they where afraid they would loose their jobs, if they told the world about their problems.