Here's my take: If it turns out that ALL tinnitus suffers (victims rather, because none of this is our fault, yet we shoulder the responsibility) have hearing loss and furthermore that the hearing loss is the cause of the tinnitus, then stem cell therapy will be able to cure everyone. If on the other hand, hearing loss only sometimes has a physiological link to tinnitus, then there will have to be a treatment that "retrains" neurons to ignore the noise. Whether this will involve desensitizing overexcited neurons or stimulating underexcited neurons will depend on the specific case.
Caveat: Not sure about pulsatile T.