The Arcturus Natural Overdrive is based on the ODR-S Overdrive Special, which was launched in 1993 as a sibling of the more famous ODR-1. Compared to the ODR-1, the ODR-S has an almost identical drive section, except that the hard clipping diodes are germanium instead of silicon. The main difference is in the tone control. The Spectrum control of the ODR-1 has been replaced by a full 3-band EQ. The mid control uses the same transistor gyrator concept as the Spectrum control, but is tuned quite differently, while the bass and treble controls are a standard Baxandall arrangement.
This kit contains the PCB and all necessary parts. The enclosure can be selected, please select 5 knobs, up to 20mm diameter for 6,3mm shaft separately.
Here is the bill of material: bill of material
This project is by Aion Electronics, in collaboration 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: