If the Elixirs sound muted, and all the world including me thinks they are 'bright', then you should have your hearing evaluated! No foolin'. I wear hearing aids after developing tinnitus and hearing loss. Mostly high frequency loss, which is how it usually starts. You're about my age, and there is loss of higher frequencies as we age. For example, coins in my hand don't have that 'chime' that I used to hear. They sound more like they are made of wood when I jingle them in my hand without the hearing aids.
You would be surprised at how insidious hearing loss can be because it is so gradual. Getting a hearing test is simple and only takes about a half hour. Hopefully, it's not the issue with you, but if it is, it can be helped.
Regards