Like the Bee Buzz, the Black Cat D&S began as a request from a Japanese distributor, who asked to have a custom replica of the Ibanez/Maxon OD-801. The design first appeared in 1974 as the Maxon D&S, and the circuit was similar to the Version 2 (Rams Head) Big Muff. But the tone stack was quite a bit different than what has been used in any version of the Big Muff. In our opinion 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. Maxon redesigned the tone circuitry to dump some resistance to ground, allowing much better definition in the low end. This gave the D&S a much more versatile tone control with a wider variety of sounds.