There is a saying dougthebiker, don't put legs on a snake. Same exact thing happens with my 63 year old ears. Not that low, closer to 15kHz, and the tinnitus is almost gone. So probably mine are in better shape than yours, hearing-wise.
Listening-wise however, it is easy to hear all the little differences between things like elevating cables, warming up, demagnetizing, and many other things that a whole bunch of audiophiles are utterly unable to hear at all. There's people here deaf to directionality. These are the ones who should be looking into hearing aids. Not me. Probably not you either.
But they don't. Because audiophiles break down into two camps- those who listen and hear, and those who look and measure. As long as you focus on measuring your hearing you will always come up short. What a waste. Because you will never, ever, be able to hear those high frequencies. For the simple reason that the more the hearing aid amplifies to where you can hear it, the more you are hearing the hearing aid and not your system. Not your music.
Hopefully you are smart enough to see where this is going. You either enjoy the system you have with the hearing God gave you, or else you might as well ditch it altogether for headphones and a parametric equalizer.