Let's talk about the Op-Amp Big Muff

[Plexi]

After more than 10 Big Muff's.. with a LM741 and RC4558 on hand.. why not?

http://i.imgur.com/XW93DOM.png

What's the deal with the 150pF and 330pF caps difference?

Complementary thread: https://www.diystompboxes.com/smfforum/index.php?topic=110056.0

[bloxstompboxes]

I still have a pcb or two I had made at elecrow.com if you need one.

[Scruffie]

150pF, more highs, 330pF, less highs, helps control the 'fizz' of the clipping stage, an intermediate value may be preferable so experiment.

[Plexi]

I still have a pcb or two I had made at elecrow.com if you need one.

That would be awesome, but I'm in the damn Argentina: where your international purchases arrive 8 to 10 months later... if you have lucky and it arrives. Thanks a LOT anyways! 
I'm into it; mod some layout, etched and drill.

150pF, more highs, 330pF, less highs, helps control the 'fizz' of the clipping stage, an intermediate value may be preferable so experiment.

I'll put sockets there and try..

[Plexi]

Talking with my old pal Kenny, he recommends to take a look over the Keeley Rotten Apple; a inspired one.
Here's some good take of it too: https://www.pedalpcb.com/docs/SourGrape.pdf

Notes:
- Try two leds instead 6 1n4148 diodes.