Nowadays I wear in-ear monitoring on stage which helps quite a lot, protection-wise. I've recently read about a study (dunno if it was on hn) where they discovered that vibrations behind the ear lessend the volume of the tinnitus. I am so going to try that if I ever get my hands on such a device.
I still have a very good hearing overall (especially in the base region), so I should not complain.
I have but since I don't have perfect pitch, I'm not getting anywhere. Plus it seems like the frequency has a certain amount of smear which might be hampering things even more.
I would love to try notch filtering but without the key frequencies, I'm doomed (although the tinnitus stuff on mynoise.net does help knock it down for short periods).