I agree with Yogiboy. I would try an EQ like he says. You can get something pretty decent for a low price. At the very least, it can be use temp. solution until you get the hearing aid issues solved.
I have a couple of EQ myself that I use for bad recordings. One is analog and is made by dbx. It goes for about $200. The other is digital EQ made by Behringer. The model is DEQ2496 and goes for about $350. Any decent music store should have those 2 units in stock. I got both of mine from Guitar Center. They have a return policy if you end up not liking it.
I have a couple of EQ myself that I use for bad recordings. One is analog and is made by dbx. It goes for about $200. The other is digital EQ made by Behringer. The model is DEQ2496 and goes for about $350. Any decent music store should have those 2 units in stock. I got both of mine from Guitar Center. They have a return policy if you end up not liking it.