When getting them make sure the audiologist does a GOOD hearing test. Airplanes killed my high frequency response so they adjusted them to "fill in the missing" frequencies. They are not just sound magnifiers! I had especial trouble in areas with hard surfaces, I could hear conversations across the room but not someone up close. Not the higher frequencies in the voice but the bass tones were good. Now you can adjust your aids with a program on your smart phone to amplify correctly for the environment around you. So if in say a restaurant with hard surfaces it adjusts the aids to the ambient noise/quality which would be different than if you were standing in a field.
I have an appointment in a few days for new aids. My old ones are 8 years old and 1 quit entirely. When I got mine, the phone app was new and never worked very well. I need it to work.
