I'd like to share this this music production video a I stumbled upon few years ago because it's been one of the most consistently useful techniques I've ever found
the video explains it really in depth but to summarize it as best I can: If you take an EQ and cuts and boosts the same (not all do) you can cut or boost a sound before it goes into certain effects, and then after the effect boost or cut the output by an exactly inverse amount and it changes the quality of the effect without drastically changing the overall frequency spectrum of the input sound.
like, for example I use this effect a lot with distortion, so you can make a sound be more distorted at certain frequencies without actually being louder at those frequencies
this really especially helps with capturing sounds that traditionally use analog distortions, if you're working with like totally in the box DI guitars or digital acid basses and you just can't get it to sound right, I've found that a boost at 250-300 hz can get you most of the way there