I had mild tinnitus before my CI. It didn't bother me too much. After getting my CI, my tinnitus totally went away. There was one episode for a week or two about five months afterward but it went away again.
Not really sure why that came about. It woke me up from a deep sleep and scared me to death as I had gotten used to hearing nothing after taking my CI off. Every once in a while with my CI off (right before bed), I will notice very slight "noises" now and then but then silence. I never hear it with my CI on.
But trailing clouds of glory till He comes...
Foolishness is not a virtue