Multi type filter (Standard, State variable, Zelda). It have distinct Fanan style sound. Recently Fanan stuff got noticed by some Trance producers and yes, its actually very good fit for this style because it sounds digitally harsh and very bright.
Filter is very simple. you have 2D controller with cut frequency and resonance axis. Filter needs still some work to become good tool - we need tempo sync-able LFO or two and envelope possibly reacting to MIDI notes.
