Handmade Effect Pedal: Nocto Loco Mod Power: Center negative 9V, battery operation possible The original circuit didn't sound right, so I modified it and added a TONE circuit. Parts used include carbon resistors and audio-grade capacitors. I'm not sure about the sound quality, but it's almost a clone. You can adjust the CREATURE trim pot to make it oscillate. (Depending on the settings, sound may be heard when the effect is off) *Please note that the sound may be short or unstable depending on the position of the controls. (This is a re-listing of a pedal that was returned due to a malfunction in the previous listing. The cause has now been identified.)