Looks like we lost the recent thread listing the different types of germanium diodes peeps have used successfully in their Darkside "geetoos" and assorted build alikes. I have a Duplex Drive on the way from Justin (electricb) and am curious which diodes to use for the best tone. ;D
I started that thread and found 4x AA113 to work best in my build.
On another site they recommended AA143, but that one gave my pedal an annoying upper octave sound, same as an AA112.
Thanks for posting, I've been on an island here. I should of copied that thread when I had the chance lol! Lumpylipton swapped in some AA143's into his Darkside build. It was an improvement over the previous diodes, can't recall what they were. I'll have to track down some of the ones you mentioned and A/B them.