My Dad has pretty bad hearing and he has the Costco 9050 105db. Right now he is right up against the feedback line but is getting fitted domes so the feedback line will change. The question I have is using the NAL,NL2 rationale. I was thinking about the Fit4Voice rationale isn’t that based on VAC+? What do you guys think? I attached the fitting.
You’re ignoring this member’s posts.