I wrote this before.
There was a guy regularly doing the rounds of the Hi-Fi shows in the 1980's who used a hearing aid. He was really fun to be with as you could take him around the rooms and he largely heard and articulated the musical difference you did. He spent a small fortune on his Hi-Fi. So if we are only talking about mechanical / biological structures what is the process going on here, because medical and mechanical explanations have no way of explaining this!
Ears are only one part of the equation, the whole body responds to energetic stimulii and not just a low frequencies. Stick some cotton wool in your ears and do the rounds of some comparitive demonstrations. First you have to get over the fact that everything sounds crap. Soon you will find there are degrees of crap and from what ever base point you come from differences and changes in emotional / energetics responses are still apparent. If that situation is all you know or are used to, that is what you work with, the human body and mind are marvelous adapters to reality.
Do you realise that someone who is totally deaf can get pleasure form a music concert, they *hear* by proxy, they pick up and perceive normal hearers energetic responses subconsciously, and they get off on that!!!
Richard