High quality equalizers

One of the problems with hearing loss is that it's difficult to determine where you're trying to get to.  They can give you read-outs at the hearing-aid place, but if they adjusted the aids to that, it would be too painful to listen to.  (I.e., it takes time for your brain to adjust).   I don't put in my hearing aids at a concert (some people do); so how would I determine the precise sound I'm looking for at home?     (For some things, you can ask a simple question:  do I understand what people are saying?  like, those kids in the back of the classroom. And you can adjust your hearing aids such that you suddenly CAN understand them.  Trying to hear music, however--that's a completely different animal.)

I've been using a pair of Eargo hearing aids to compensate for my general hearing loss due to age and years in a loud workplace environment. Their top model (around $3000) is made specifically for hi-fi enthusiasts. There are 4 preprogramed volume levels and you can adjust the bass and treble response on one or both ears for each of the 4 programs. They also have preprogramed algorithms for such things as conversation, crowd, theatre venues, etc. Control everything with their ap on your phone. Totally invisible, FDA approved, and rechargeable. Made a big difference for me. Have very limited high frequency hearing. Worth looking into.

J.Chip

you could experiment also with devices such as a BBE or an aphex aural exciter, the latter has a midrange control that is good at boosting clarity of inner voices, plus a brilliance control on top and a big bottom" bass expander, as folks with presbycusis tend to lose bandwidth at both ends.  

Just picked one up from a Agoner in Michigan!  Couldn't recommend anything more.  Great for apartment living with limited speaker placement or hearing loss, et cetera

Connect-in before or after preamp ... couldn't discern notable difference; though I like it after so all sources can be adjusted.  Well made!!  You won't be sorry!

Hello,
The Shiit LoKI mini + is the Las test by the company. You can adjust the highest and lowest settings by 6db and the two mids by 12db. At $149 it’s very reasonable. I use this for my phone setup since it is single ended and lets me micro adjust the Schiit Phono stage to get dialed into my system. My preamp has a loop function so I can turn it on and off as I please but it is really for records due to my TT setup is on the light side. Another option is a used older equalizer which has a lot more adjustments and some cool lights. My local shop I frequently shop at in the Chicagoland area has used equipment you can try before you buy. https://holmaudio.com/
It’s like the ultimate candy store.