PSK SOD-2 Super Overdrive (not a SD-1, LM308 inside)  [schematic]

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
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Matlevo12
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Post by Matlevo12 »

Hey everyone.
I stumbled upon a "old" psk boss clone, which turns out to be a rat with asymmetrical soft clipping, with buffered bypass... or a sd-1 using a LM308, if you'd prefer.

I tried to find some other pedals like this one, but I couldn't, does anyone know about some already existing overdrives using lm308 / rat with only feedback diodes clipping?

Thanks!

Here are some pics, and a schematic from what I traced :
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PS : yes R2 is 470 and not 47 ohm
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Matlevo12
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Post by Matlevo12 »

I just dis overed that the proco brat/roadkill is just about the same pedal, if you add hardclipping diodes in the unpopulated locations.
But... The psk pedal came way before the Brat :)
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vangelismetheny
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Post by vangelismetheny »

Matlevo, thank you so much for your info and nice tracing!!!
It's help me a lot.
Cheers bro!
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bmxguitarsbmx
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Post by bmxguitarsbmx »

This looks interesting. How does it sound?
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