Back by popular demand, the MXR flanger creates a variety of wild sounds from dynamic jet plane or cool space effects to short delay, chorus and vibrato. Back off Width to zero to disengage auto-sweep, then use the Manual knob to physically place the effect anywhere along the frequency spectrum; Use with guitar, bass, keyboards or vocals! Power: Two 9-volt batteries (some early models may not have this feature), or Dunlop ECB-004 18-volt AC Adapter - Controls: Footswitch toggles effect on/bypass (red LED indicates on) Manual knob selects frequency center of effect when auto-sweep is disengaged Width knob at zero disengages auto-sweep, rotates clockwise to increase total phase sweep of effect Speed knob modulates rate of effect Regen knob feeds effect back onto itself at adjustable intensity, increasing the total phase effect
Flanger page at MXR 's website...