Black Cat D&S
The circuit is similar to the Version 2 (Rams Head) Big Muff. But the tone stack is quite a bit different than what has been used in any version of the Big Muff - it's much more versatile, and usable throughout the entire range of the control.
On a traditional Big Muff type pedal, the tone rolloff gets very muddy, resulting in a loss of definition and mushy sound.
The redesigned tone circuitry of the D&S dumps some resistance to ground, allowing much better definition in the low end, which gives the D&S a much more versatile tone control with a wider variety of sounds.
Just like the original on which it was based, the Black Cat D&S is a great sounding Muff-style fuzz pedal with a highly versatile wide range of tones...