DICE WORKS MUFF DIVER modified Triangle Big Muff clone - A discontinued boutique clone made by Eric Holden, circa 2005, of the an original Electro-Harmonix V1 Big Muff circuit shown on page 1 (PNP Triangle 72 #2), with the addition of switchable coupling caps at C4 and C5 to make it sound more like the custom Big Muff known as the P-1 that Pete Cornish made for David Gilmour (of Pink Floyd) in the late 1970's. In reality, it sounds nothing like the P-1, but resembles something in between the Cornish P-2 and G-2 tone. It makes for a very versatile Big Muff. One of my favorites. Another version of the Muff Diver included a switchable input cap setup identical to the Cornish/Original switch in the standard version, switchable Ge diodes in the first clipping stage, and a switch to remove the Si diodes from the second clipping stage.
More info can be found at Kit Rae's bigmuffpage.com.
Like the original I have used BC327-40 PNP transistors here and have included the voltage inverter daughterboard so it can have a negative ground. I'm not sure whether the same was true in the original or whether it had a positive ground, but either way, it makes sense to have a home built version as compatible as possible with most of your other effects. I have included two clipping switches though which will allow you to have silicon or germanium diodes in either/both stages, or lifted in the centre off position for a maximum range of sounds.
Like some other Big Muff's and variants, the base sound with this is scooped, but if you would prefer flatter mids then increase the 3n9 cap at Q3 collector to 10n which will make the frequency response very flat. Or you could always add another switch if you want both options available to you.
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