Tinnitus is linked to anxiety, and since amitripyline relieves the anxiety, your tinnitus decrease with it.
Tinnitus Talk Support Forum
But I don't have anxiety
Do you have any nerve damage? I know my dad takes Sarotex (amitripyline) because of it. It relieves the nerves, maybe it has a connection with your tinnitus?
I have tinnitus from tmj
yeah? tmj is kind of a nerve damage to the joint that connects your jaw to your skull. Amitriptylin loosens up the jaw muscles which helps improving the symptoms, in your case, the tinnitus.
interesting...and good! 
Iv been taking it for a few weeks at night and it really lowers my T I take it at about 6pm and I hardly hear it at night
Good to here it's some help for yout tinnitus. I take it just before bedtime it lowers my T so I can get to sleep.
I took 70mg last night and my T didn't seem to be there if it b nerve related how do I fix the damage nerve