Eddie good topic.
A while back I posted the difference between the Pa800 and the Pa900. Someone said that we begin to hear differently as we grow older; it rang a bell.
I tune pianos by beats and not pitch and the job is still good. --- But what am I hearing when the keyboard goes through the Bose? Both my keyboard and my acoustic guitar sound great without the hearing aid, with it everything is harsh. It�s like listening to music on a telephone.

My question how is it possible to adjust the EQ when my ear does not hear the highs and the hearing aid distorts them? Do I need a third party for a reference point? Am I being too critical?

John C.