Twenty five years of Tinnitus and Musical Ear Syndrome with no hearing loss here, just my two cents. A recent convert to high CBD medical Marijuana. Works for me.
It really depends on the strain (mostly CBD Indicas or CBD Indica heavy hybrids seem to be working for me) but in general it does wonders for my Musical Ear Syndrome and lasts through the next day, my anxiety just drips away like water off a duck's back, helped break one of the worst spikes I've ever had, and has reduced my T down to the 'normal' level it was ten years ago. This may not be the case for everybody, we're all "snowflakes" after all.
I was a hash smoker (read unconsciously -but effectively- self-medicating) for years in Europe and quit when I returned to Canada and found the weed that I was buying here increased both my T and my anxiety.
I don't think you can compare CBD MM strains, or even the more balanced Middle Eastern cottage industry farmed hash, to the grow-op 'street weed' high THC sativa stuff that's available to the vast majority here. North American growers tried to increase the amount of THC at the expense of CBD in marijuana for years and were very effective at that quest.
CBD=anti-anxiety, THC=increases anxiety. Increase the effects of one, negate the effects of the other. Plain and simple. Not a bad trade off if you like being stoned but, historically, sucks balls if you want the health benefits. And they are there with CBD.
Most of the weed people buy off a dealer is sativa and anywhere from 10:1 to 17:1 in favour of THC; I'm smoking Indica from a medical dispensary from 1:1 up to 1:4. See the difference? CBD also has the bonus of mitigating the psychoactive effects of THC.
If you have Tinnitus related anxiety then CBD heavy MM works very, very well I can assure you.
Think of it like antibiotics; there are many different kinds but only a few will help with your specific illness and some may do more harm then good. Some are good for pain, others for sleep, others for anxiety, some for nausea, some for either increasing or decreasing appetite etc.. Fortunately a good medical dispensary can inform you of what will help or harm.
My own pet theory is that after a while with T, or other hearing problems that cause T, the endo-canibanoid system becomes so fatigued it gives up trying to regulate all these misfiring neurons we have (which is basically what it's supposed to do in the first place) and we descend into a constant state of unmonitored and uncontrolled fight or flight response which has a cascade effect across the whole biological system. This, in turn, elevates T (chicken meet egg, egg meet chicken) and leads to spikes and other related symptoms both somatic and physical. Mine got so bad I was exhibiting the same symptoms as someone with thyroid problems -for which there is a family history and took quite a while to get to the bottom of. That vicious cycle, rather mercifully, has ended for me.
Cannabis helps regulate the endo-cannabinoid system; ergo they sympathetically re-establish a certain level of control that had become absent and re-opens those lines of communication that tells misfiring neurons to "shut the fuck up and go to sleep". Quite abruptly I would add.
Yes, I have tried a number of 'official' pharmaceutical routes, all of which had unwelcome side-effects, did nothing for my T, and some of which had disastrous effects on my day to day life. If those are working for you then great, they just didn't stick with me.
If you have the luxury and legality, then I would strongly suggest you try it as an option and stick it out for a while until you find something that works for you.
At the end of the day it's just another tool to have in the box and one that works very well for me. I was at the end of my rope with my doctor trying to push a square peg through a round hole and telling me there was nothing that could be done when the peg didn't fit for either of us. It works for some, give it a try.