While I am only in my 60’s, I fret over the same auditory limitations as you (hopefully I’ll make it to my 80’s).
I would recommend that you get an auditory test to see (objectively) what frequencies you can hear.
Buying equipment that can resolve to 0.0001% THD is irrelevant when you can only ‘hear’ a difference at 10% THD.
This opens up a range of (cheaper) options.
I would recommend that you get an auditory test to see (objectively) what frequencies you can hear.
Buying equipment that can resolve to 0.0001% THD is irrelevant when you can only ‘hear’ a difference at 10% THD.
This opens up a range of (cheaper) options.