Hi. If someone is interested, here are a pics of pcbs of Guma Antique and Guma Drive, two verified clones from Schalltechnik04 of the originals Darkglass Vintage and Darkglass B3k.
I sanded the coat protection to draw the traces easily.
Guma Antique (Vintage):
Guma Drive (B3k):
General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
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