#1
How do these work?

I'm accustomed to solid state standard eq that comes with line 6 amps, because that's what i have, but soon to have an amp with active eq.

what makes it different than regular EQ?
#2
Passive can really on cut frequencies, being mostly made up of resistors. Active can boost and cut.
#3
active are also alot more sensitive i find, when you always hear how hard it is to find a good tone with mesa its cause they have a active eq, most amps who have them, when you get them to sound good they sound GOOD but they take a while to eq.