The Meteor is based on the original SD-9, but with the midrange mod from the SD-9M. Since the SD9M?s gain stage mod is not original to the circuit and is always partially in the audio path even when it?s switched off, we have not included this modification in the Meteor project, opting to keep it 100% the same as the vintage unit. However, since the midrange switch has one position identical to the original circuit, we included this switch along with a third position not found in the SD-9M for even more tonal flexibility. There is also a toggle switch to select between three different sets of clipping diodes, two of which will significantly increase the available output volume.
This kit contains the PCB and all necessary parts. The enclosure can be selected, please select 3 knobs, up to 19mm 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: