This pedal is the new mini version of the Air Traffic Controller ? but with a switchable filter. The overdrive circuit (not switchable) is from the ? now discontinued ? El Distorto, so this is actually a two-in-one pedal. With the filter on and some white noise blended in it gives a? moogy-soloing? hi-resonance funk sound, or a stinging and intense lead tone. Filter off gives our tweaked mid-rangey optimum fuzz (as loved by Billy Gibbons).