Equalizer for Mac?

Picked up a Shiit Modi 3 and KEF LSX speakers and love the setup. Only complaint is a lack of highs, which I can fix in iTunes with the EQ, however I'm looking for something I could use with Tidal and other non iTunes sources. 

Any suggestions?

I just ordered one too boost my tvs bass for movies late at night sort of like a loudness button. Just going to put it between the tv and my integrated (dual purpose room), bet that would work for your high's. I like the 4 bands as well boost/cut  highs, upper mids, lower mids, bass. 
You might consider getting a Room control unit. Most of them have the ability to install target curves so you can EQ any way you want.