for post-production on a stereo recording of multiple sources, i usually rely heavily on fabfilter pro-q 2… typically notching out specific frequencies with a tight Q via automation in a daw. i like having the flexibility of applying the eq tweaks to either the left or right channel, or the mid or side channel in M/S mode. with 5-10 bands, can usually achieve enough control to be able to “mix” the relative level of different sources pretty well.
for instances where a specific frequency range is particularly active and i want to save the time of automating (sometimes for hours), i’ll occasionally use the fabfilter pro mb, a pretty nifty multiband compressor. i find that using multiband compression gives one less control overall, but is much faster to get set up and achieve adequate results. so for something quick like an instagram video i might use the multiband, whereas for a commercial release i’d likely go through and notch out specific frequencies via eq.