Way back when, in the 50s and 60s, amplifiers used to have tone controls by which the treble and base response could be increased or reduced. Then in the 80s we got graphic equalisers, that enabled adjustment of the response of different slices of the audio spectrum.
The latter were little more than gimmicks for the uninitiated to play around with. This included uninformed production engineers who ruined many a good recorded performance by messing around. To make matters worse, the circuitry employed impoverished sound quality.
As others have written above, don't go there. Get a pair of speakers that produces sound that is to your liking.