That is great then, thanks for info.

Sure, thats why Apple. Sony, Bose etc need to do user-tailored sound curves (audiogram), and for low to low/moderate hearing loss is probably fine for most.

A friend had hearing aids "professionally fitted", and the free internet audiogram basically matched the one done in a sound booth by the professional.
The tuning on the hearing aids wasn't that good, being a "cheap" (aka not mega-multi-thousand currency pair), so tbh i think consumer electronic companies could easily do something better at the lower end of hearing loss for users.

They did have a pair of Here One earbuds which were so close to being great, but battery life and app integration let them down. Then Apple came out with their first earbuds and kinda killed them off. Sad really as the tech was getting close.