@rcm1203
I did buy the ASI IEM’s, and soon thereafter returned them. I found their overall sound and harmonics to be good to very good… except bass. My KEF R11’s, Rythmic F12SE’s and miniDSP are tuned beautifully.
Most hearing aids (RIC) are ‘open air’ allowing our ears to hear without their assistance. My hearing loss (typical) is in the high end. I have no correction in the low end.
With my open air hearing aids (top of line Signia’s), my systems bass sounds glorious & crisp with great harmonics.
The IEM’s close off your ears, so you are relying solely on the internal IEM speakers. The bass is there, but much less crisp… almost dull. As an aside, I have small ear canals, and found the ASI’s to be uncomfortable. YMMV
My be worth a try as they are an easy return.