The hearing aids you speak of, do they have a user adjustable volume. I am not sure why the ear doctor for a hearing aid I was using for high frequency hearing loss, told me I had to go back to him for volume adjustment. If it is not just his way of continued business or just the maker of the hearing aid has it like this?
Since I only needed the aid for a job, but the aid had taken longer to get I have it left unused, but may use it now. I did see that I can adjust the volume and also have it stored in power up settings across another device it works with for streaming.
I guess my answer to the doctors reasons in telling me that I could not adjust volume was just pure *&%$#^.
Last I wonder why there is a tube beside the one that has the dome part that goes in ear left and right ear, there is an inch length of tube that pair off by itself with nothing connected. Is this for the sound detection and not in the part that has the battery in it?
I did not have any batteries leak, so if the unit still works with new batteries and the detailed cleaning maintenance stuff that came with it I can give it a try.
MT