The EQ the most abused/neglected section on a mixing console. I always try to teach people at square one that the EQ should primarily be used to subtract, or "sculpt" the sound. When have you seen a sculptor pack material on to create a statue? Yet, I still walk into our student Chapel every couple of weeks and find almost all of the vocal channels with low-mid and high-mid frequencies boosted. Thats a muddy mix, and its asking for feedback. I rarely boost EQ on any source except for some playback channels or to accent transients on drum channels.
On some old Neve audio consoles that were built to “military spec”, the term used for this section on the mixer was “correction”, instead of “equalizer”. That gives a little bit different picture of what this section of the mixer does, right?