Any audiologist that fits hearing aids can make you a noise protecting ear plug. (like the rock stars use) Some plugs will attenuate only the high frequency sounds while others the entire frequency range. 4000hz is the most important area to protect. I googled one company that changes $125.00 for a pair. Reduces Levels throughoutthe entire spectrum by 15-25db. You can cheek it out at: http://www.earplugco.com/musician.htm
Good Luck
Richard (ENT MD)
Good Luck
Richard (ENT MD)