Martin,

Something else to consider for music making purposes and hearing loss:

If you find that you are getting by without hearing aids in normal life (though significant other persons may disagree with you!) and have primary concern about music making at home...

You may want to consider some nice in-ear monitors for use with BIAB.

Because you can isolate from the room with 25+ dB of isolation with in-ear monitors, and because you are putting sound directly into your ear canals, you can perform an output stage equalization with either BIAB tools or external hardware or both, that is an inversion of your hearing loss (HL) curves for your individual ears.

You should have these curves available from your audiologist. How significant are the individual octave band losses on your individual ears? If the HL is less than 24 dB in an octave band, then a typical stereo graphic EQ (which has adjust-ability of +/- 12 dB in each octave band) can possibly be used in conjunction with in-ear monitors, to help you have a more 'balanced' hearing of your music you are making.

This is all outside of Hearing Aid use. Unfortunately, with the limited band-width of most hearing aids (they are all single-driver, speech frequency focused in some fashion), listening to music will likely be unsatisfactory.

In ear monitors will employ 1-5 and even more drivers (or receivers in hearing aid terminology) arranged in various types of physical and cross-over arrangements specifically to provide balanced output across the audible spectrum. Because of this, you can try out an inverted HL setup in a stereo graphic EQ.

PM me if you have more interest in this.

-Scott