All I can say is that it takes time and several adjustments to get them right for you. It also seems to me that my brain had to be reprogrammed to hear again
The first month I wore aids, I was hearing a lot more noise but not understanding any more conversation ( mid range loss ) as time went on I gt to where I understood more. My audi wears aids and sells Starkeys, thats what I have (2). Only complaint is the itty bitty batteries, almost impossable...