Need some treble

Thank you all for your suggestions - except maybe the one about the earcups.  I've decided to try out one of the Schitt equalizers and see if that solves my problem.  My question is, since I'm only interested in increasing the treble frequencies and not messing with anything else, should I go for the basic Loki Mini*, or is there any reason to get the more expensive Lokius?

For only $299 I would suggest the Lokius with a 6 kHz adjustment for treble and 16khz to add some “air” to the sound. Schiit gear is built incredibly well for the modest asking price. You,after experimenting, may find the other bands on the Lokius to enhance your overall musical experience. All the best!

Agree with @hifiman5 -- the Lokius gives you a bit more flexibility in the upper range. The Loki Mini does 2K and 8K in the treble while the Lokius does 2K, 6K and 16K. Keep in mind that the highest note on a piano is 4,186 Hz. Everything above that is harmonics. Only percussion instruments like snares and cymbals have any fundamental output over that. 

Seems to me that, if you're not hearing high frequencies, boosting them via tone controls may do nothing.

Much like having a null in your listening room. 

My question would be. Do those cymbals reappear when you crank it up a few notches?

Go to Costco (etc) get hearing aids