I use a type of musicians plugs if I go to the big shows, I can't remember the brand right now but if I do I'll run them up as they're wonderful pieces of kit. They have clear sound and just lower the decibels (By as much as -30db depending on what tips you have on the ends), they're also quite small so they don't feel like you've rammed bullets in your ears. I wore them at two shows on the '09 tour and I never had any tinnitus at all.