Check ot the Widex 440 Series. I did a lot or research when i was lookng for my hearing aids. It seems like the Widex 440 is used by a lot of musicians. It has a 10-Band equalizer that the doctor sets up and a three-band equalizer that you can adjust and save the settings. Sound, to me, is very natural. It opened up my music enjoyment again and I cna't be happier.
Attached is a link to a paper that I came across in my research - Hope it helps