Toggle mod for Big Muff (Whizzer)

[manson]

I read some things about a so called "twin toggle" mod for a big muff. The guy who does this is Whizzer Mods. He is active on Ebay and offers several modded pedals.

http://www.harmony-central.com/Effects/Data/Whizzer_Mods/Big_Muff_Twin_Toggle_Super_Mod-01.html

People seem to like what he's doing. Saying he makes a big muff sound somewhat like a Cornish G2. Has anybody ever heard of him, and what his mods are / do / sound like?

[cbriere]

maybe it's the same thing i did on mine
see the values:

simple and effective. 2 caps and a switch.

[manson]

Could be  what does your mod do to the sound?

[cbriere]

Could be  what does your mod do to the sound?

if you look at the 2 plots posted, you can see that the mid section
is beeing altered by the change in value of the two capacitors
c1 and c2.
this make a big hole in the mids. same thing as if you would
add an EQ in series with the effect and set it with large smile
shape.