Loudest I have been to was a Rush concert... I plugged my ears with tissue paper. The show was OK but not even that great, and the volume and the whole thing made me wished I had stayed home... it wasn't enjoyable.
As for tinnitus: excellent hearing aids can actually help diminish, and possibly even diminish, tinnitus because they re-train your brain to attend to all the other sounds you can now hear besides the tinnitus. ... you should look into that research....