I have tinnitus too, mostly due to a lifetime of sitting in front of trumpet sections and next to drummers in big bands. I don't notice it until I'm in a quiet room, then it's very noticeable. If I ever got put in solitary confinement I'd probably go crazy. I sleep with a fan on (or some other ambient noise) so it doesn't bother me at night. Occupational hazard I guess.
BTW, I've tried using earplugs when I play but I never could get used to playing with them.
can you hear quiet passages or sounds clearly?
Yes, my hearing is still very good. The ringing is noticeable only when it's completely silent.
you are a very lucky man, indeed.