FWIW, it ain’t the same kind of sound as you’d get in a high quality 2 speaker system properly set up, but a good set of headphones, amp, and source can go a long way in getting you a sound were you can hear those HF’s you are losing.
Other than that my experience mirrors knotscott. BTW, I tried high quality hearing aids and did not like them at all with audio systems, I’d rather have the reduced highs than endure the hearing aid artifacts.