- Combination of "Gain" and filter direction?
- Determines frequency peak of filter. Makes more "effected sound" when turned up more.
- Mode (LP/BP/HP)
- Select the filter used by the effect: Lowpass, Bandpass or Highpass.
Designed by Mike Beigel, inventor of the legendary Mu-Tron III envelope filter.
"Oh my!!! How did they do it? How did they get that incredible Q-Tron envelope follower sound into such an inexpensive battery-operated unit? How did they manage to create an envelope follower that's as smooth as a baby's bottom at every combination of settings? You know what, I don't care, just give me the damn thing!"