Dunno how similar or not this one is to the Diablo that @PedalPCB just traced but this looks like a Diablo with an "Input" switch and a separate boost?
www.rogueguitarshop.com
OKKO FX Diablo GH Signature
Gregor Hilden, top blues guitar player, collector and dealer of finest vintage guitars and amps – this man knows TONE. More than 10 years ago he bought one of the first Diablo pedals in a little shop in Germany and kept the Diablo as THE overdrive ever since that day, playing it in hundreds of...
www.rogueguitarshop.com
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