Just picked up a Boss Super Overdrive SD-1 for like $20. I kinda dig it! Are there currently any projects for the SD-1 kicking around? Is Aion's Tube Screamer board a possible candidate? The SD-1 sounds like a warmer version of the Cornish SS-2/Duplex Drive with less bass.
Aion Electronics has one
Storyboardist has an etchable one on his site.
http://effectslayouts.blogspot.com/2015/08/boss-sd-1-super-overdrive.html?m=1
Thanks for the links. I looked at the plethora of overdrive projects offered at Aion. I think the Corona is only for the OD-1, not the SD-1.
https://aionelectronics.com/project/corona-boss-od1-overdrive/ (https://aionelectronics.com/project/corona-boss-od1-overdrive/)
Digging in to the Stratus build doc, it looks like you can indeed do the SD-1 on that board. Curious if anyone here has done so?
https://aionelectronics.com/project/stratus-ibanez-ts9-od808-tube-screamer/ (https://aionelectronics.com/project/stratus-ibanez-ts9-od808-tube-screamer/)
Wampler has some mods for the SD-1 in his old book. I did them once and had some happy results. That is a surprisingly solid drive pedal straight out of the box! I think the book is out of print, so I could pass on some details via PM if you are interested but can't find it.
Cool, PM'd. I agree, the SD-1 sounds great as is! I'd like to tweak some of the components though, especially the opamp, caps, and perhaps the diodes. True bypass wouldn't hurt either.