Thanks a lot for the info/advice. I will definitely share. He was wondering if a small directional speaker attached to some part of the ear that allowed the nat

Thanks a lot for the info/advice. I will definitely share. He was wondering if a small directional speaker attached to some part of the ear that allowed the natural sound to just be augmented by an amplified speaker would be better than blocking the whole ear from natural sound and replacing with digital. I wonder what the "digital" effect of these Bose headphones will be. I would expect that they are inferior to hearing aids that have been under development for eons but maybe it will be a different approach that addresses different problems.