Are you using open dome or closed dome hearing aids. Depending on the degree and type of hearing loss you have, the open dome ear piece, along with a hearing aid that has a separate programable "music" setting, can help you dial in the frequencies you need to boost without causing the shrill spikes or distortions. The open dome allows natural sound coming from the speakers to still enter your ears, while getting a slight boost at the necessary frequencies. It takes a number of trips to the audiologist to get settings dialed in right.
Again, it might vary depending on the type of loss you have. I have hearing loss only in one side, and no amount of speaker balance adjustment or EQ can solve my situation as well as an aid.