If you have tinnitus places like Costco Hearing aid centers aren't trained really to deal with this

 Though there are many forms of tinnitus one of them is your brain wanting more sounds and so it is straining to hear something more normal. And there are some advanced hearing aids designed to really increase your hearing like some more expensive advanced models by Phonak and others. However, you might have to go to a Doctor of Audiology who can define your tinnitus specific to what your brain and ears are doing specifically. If you have tinnitus just regular hearing aids might not solve the problems you are dealing with with tinnitus. 

Also, I know that medicines to help with some kinds of tinnitus are being developed right now. So, it's sort of important to have your specific kind of tinnitus diagnosed so you can do better in life in communicating or wearing specific hearing aids designed expressly to help you with your tinnitus.