i’ll add in a comment also, I saw some videos like this once and decided to give it a try, so what I did was I looked at what a pultec boost does using a frequency analyser. first think i noticed is it was a strange boost… the curve on the left was steeper than the right… so I tried and tried an eventually copied the eq curve using several points… and yes it sounded to my ears almost identical, if not identical… but it was difficult to copy, difficult to manipulate, where as with the UAD pultec plugin, it was a turn of a knob…
that’s the point… yes some settings may be duplicable with other eq’s, but it isn’t very musical, id much rather choose the frequency and turn the knob. especially when working quickly.