I joined TalkBass five years ago, but have been dormant; work was all-consuming, and life was problematic. This forum shows me that attitudes about health and hearing among musicians are changing, and I am very glad. Here's why: Most concert venues, musical instrument corporations and the music stores et al. are afraid of our concern for our hearing. Have you noticed the zero-to-very-little hearing conservation equipment or mere information available in even the largest of music stores? Did your bass/es and amps come with brochures containing the information we come across on our own? I'd like to know, But I think I already know. We were kept in the dark, and we felt invincible.
But I am writing to give some suffering folks some hope, hopefully....
There are way too many misconceptions about tinnitus. First off, although those of us w/the real McCoy, chronic tinnitus, feel at times like we are about to go mad and even contemplate suicide (don't--a permanent solution to temporary depression is not the way), there are ways to greatly reduce the suffering. Masking helps many people. Just plug that word into your search engine, and see what you find. Theres a lot. Please, though: Do not build up false hopes buying those herbal or homeopathic "cures" for tinnitus. They are rackets rigged by people who cruelly feed on the frantic hopes of tinnitus sufferers. Notice how they claim that "studies show" that their junk works, but they never give you the references. RED LIGHT!

They are simply lying--their potions do not help at all, but there is real help available, once you overcome your hearing-clinic phobia, should you have it. If necessary, a clinical psychologist can do just that: Help you chuck that nasty phobia.
Who am I to be talking about this? Good Q. OK: I'm a doc, a combat veteran, an electric bassist for two decades now, and I have tinnitus, not necessarily in that order. Out of desperation I tried every herbal prep from the placebo-nostrum "Ringstop" to ginkgo-leaf extract and other herbal preps to various vitamin combinations. BTW, ginkgo does possibly help those whose tinnitus stems from circulatory problems, but it also thins the blood & could be dangerous; talk to your doctor. Natural does not always mean safe. Snake venom is natural. Earthquakes are natural. Death can be natural.
1. Tinnitus is NOT an illness: It is a symptom of anything from significant hearing loss to cerumen (wax) impaction. When associated with noise exposure, it may subside or not. Think of tinnitus like you would of pain: Sure, pain hurts by-definition, but it is a symptom, not an illness. It can stem from many medical conditions, and it too can be temporary (acute) or chronic.
2. It is absolutely false to state that all folks with tinnitus have clinically significant hearing-loss. Many do, but quite a few don't. So please stop frightening your fellow musicians who tell you--usually desperately, seeking encouragement-- that they have tinnitus, with preachy statements that contain stern (and baseless) admonitions like "well, to protect WHAT'S LEFT OF your hearing" wear earplugs, etc. Wear earplugs? Most certainly! But "what's left of?!" Is that the way to talk to a terrified, depressed colleague?! Yes, it seems like such a statement would apply to one of us who in her/his mid-30s rquires high-power behind-the-ear hearing aids after years of playing rock concerts and indulging in loud personal listening habits. Even there, correlation does not equal causation: The person may have had a hereditary form of hearing loss that would have kicked in no matter what. We're all different.
3. Like s/o posted a long time ago, different people respond to high and sustained levels of sound differently. There is no way to predict the damage, so of course unless you PLAN or even just HOPE to die before you get "old," get yourself at least a few pairs of the one-size-fits all ER-20 relatively hi-fidelity "musicians' earplugs." Be prepared: Music will sound far better than through foam earplugs, but the "brilliance" will be much diminished. Oh well. And hey, much better: Instead of buying that "must have" $200 used bass or what not, go to an audiologist and get custom musician ear-plugs: The earmolds are made from impressions taken from YOUR ear-canals, so the fit will be much nicer that the "better than nothing" stuff you can get online.. I got the ER-25, the highest level of protection available in musicians' earplugs. The music sounds more natural through these plugs in comparison to the mass-produced ones. Does it sound like "the real thing?" No, but it sounds good enough, especially if you keep in mind that these plugs will help you continue to enjoy music with its high frequencies into old age. Think of how music sounds through 33dB foam earplugs. Now imagine that this was how things sounded to you with nothing stuffed in your ear-canals: Don't go there.
4. Example in Re #2: Although my tinnitus has been a constant buzzing and ringing companion for thirteen years now, my hearing tests (one @ the onset of the chronic tinnitus, the other before the fitting of the ear-plugs) revealed that my hearing was very acute and normal. After the second testing, which was by far the more thorough of the two (I was "a bit" older, see) the audiologist told me that my hearing was, in fact, way above average for my age-group. Like I said, tinnitus is a symptom: In my case, it is most likely a chronic symptom of the frequent excitation of my auditory cortex (that's deep in the brain, not in the ears, although the ears are the initial "doorway," yes) by very loud noises. Yes, my bands were loud, but warfare's infinitely louder. It added up, and what research is showing is that for people like me, all that noise exposure "rewires" the auditory nerve and the auditory cortex into a state of abnormal and constant excitation, which we perceive as phantom noises--tinnitus. And this happens irrespective of how well you hear.
5. This not just a bunch of med-talk: It's useful for musicians to know, and it's also encouraging for those of us who struggle with what we call amongst ourselves "T." In fact, understanding the many mechanisms of tinnitus &/or hearing loss has become a priority in the USA at long last. The VA reports that 1/3 of soldiers returning from deployment in Iraq have tinnitus, significant hearing loss, or both. Usually such estimates are on the low end, for political/legal reasons. Not surprised, are you?! At any rate, the Federal government is pumping a huge amount of money into grants for researchers with promising basic and applied research programs relevant to better understanding the mechanisms behind tinnitus, and ultimately actually helping folks with tinnitus. As for hearing loss, scientists are studying the cochlea of song-birds: Unlike humans, these birds regenerate damaged hair-cells. Once they can figure out how this can be induced in humans without triggering an out-of-control cancerous regeneration process, it will be possible to actually CURE hearing loss and deafness that is cochlear-based.
6. Did you know that tinnitus and/or hearing-loss is just as common (you "heard" me correctly) among classical musicians, especially those who sit in front of the brass... Yes, and violinists play their super-high-pitched instruments very close to one ear and guess what? That's right: The majority of them have quite a bit of hearing loss in that ear, and much less if any in the other. And most of them, irrespective of whether their hearing is compromised or not, have T in a big way.
Stop kicking yourselves for what is: It's not productive; it just adds to the depression & anxiety; and DEFINITELY stop pontificating at the terrified new members of the T club. When we were younger (and we mature at different rates), we believed or wished fervently that our music could not possibly have the damaging effect of plain old "noise." After all, this was art; our music was and is beautiful to us and those who are smart enough to appreciate it

. Ease up on yourself: You were intoxicated with the high of creating music as well as the high generated by very high levels of sound, which is why some people never get it and eventually do go essentially deaf.
I recommend that those of you suffering from tinnitus that does not fade away within 72-hrs tops see an ENT- or otology -physician, who will after a cursory exam refer you to an audiologist for thorough testing. No, there is no cure for tinnitus at this time, however, there are some excellent scientifically-based treatments that help many people immensely (e.g., Tinnitus Retraining Therapy, or TRT; Cognitive-Behavioural Therapy, or CBT; and lots more). Also, tinnitus can stem from many different things. Please, do not let fear keep you ignorant of your condition. That state-of-being is far worse than being aware of what ails you, even if the news isn't that good.
Also, there is a wonderful org that is not just about hand-wringing and sharing woes. It provides cutting-edge info and referrals to specialists of all stripes for us T-club members. It's the ATA--the American Tinnitus Association. It's got a great website, and even greater people on staff. I know that there are similar orgs active in England, Germany and Israel, and I would imagine that such is the case in most countries. You owe it to yourself to find out. Refuse to be a victim of this condition; don't guilt yourself; don't let others guilt you with "I told you so" talk--it's cruel of them & please tell them that. Get earplugs suitable for musicians, preferably the custom ones (2/3 the price of a Squier and far more important for you). If you get in-the-ear monitors, that's nice, but if you crank them up they are no better than shoving your head into the PA/stacks/etc.
And be kind to yourselves: You're human. Humans make mistakes, and then the brave ones stand up, brush themselves off, and do what they can to correct these mistakes, even if merely partially. Believe it or not, a lot of good can come out a lot of misfortune. It does take time, but humbling experiences make us kinder people, far better people. The ego gets cut down to a more natural size. Humbler people are known to make far better music than the arrogant ones. Look around you; there are many examples to demonstrate this truism.
Good luck. My education didn't help me @ all in the beginning of my life with Mr. T, b/c I was too addicted to my playing and music plus the sheer intoxicating volume: When it was clear that my tinnitus was not going away, I was not in good shape. I remember spending an entire summer driving solo all over the USA in a tiny Toyota Tercel visiting people just so as not to be alone for one minute with the T. When people got tired of me and my woes, I hung out by fountains, waterfalls, anything that could drown out the "head noise." I didn't sleep; I'd wander from one bar to another. It was a miserable existence. But I am a better person now than I was pre-T (not that I'm recommending that you acquire this condition for self-improvement purposes!), and so can you. We all have it in us to turn the proverbial lemons into lemonade. Each one of us finds a different route to get there, but those of us who try hard enough get to a better place than we could ever envision. I promise. Going through the fire forges you into steel, modest steel.