The Zapper is a wideband notch filter with which you can achieve a narrow and resonant filtering of the sound. It's also good for creating a fixed wah sound and for emphasizing a frequency.
This kit contains the PCB and all necessary parts. The enclosure can be selected, please select 4 knobs for 6.3mm shaft seperately.
Here is the bill of material: bill of material
This project is by PedalPCBs, in cooperation with Musikding. If you have any problems with the contents of the kit, please contact Das Musikding (Klaus).
Here is the direct link to the manual with layout and schematic: