FWIW, the PlayStation was meant to have the Nintendo button layout too. In Japan, O is synonymous with “yes/good” sort of like a check mark (✅) and X means “no/bad”. So the X and O buttons were meant to be used in that way. But western game devs didn’t know that, and designed their games with X as confirm and O as decline.
Typically speaking, you’d want to cut instead of boost. Cutting is easy; You just reduce the volume. Boosting is much more complicated, because you need to “add” signal where none exists. So boosts tend to be noisy and/or outright distorted, while cuts will maintain a clean audio signal.
Need to boost around 2KHz? Try cutting everything else instead.