Green Muff is a clone of Electro-Harmonics Big Muff that was produced in Russia in 1990s.
This version is known as “Tall Font”, “Green”, “Sovtek” or “V7” and has a dark distorted sound with lots of sustain.
As we're located in Russia, it is still possible to get some of the components that were used in the original Russian Big Muff.
The Green Muff has the same new old stock transistors (Kt3102em) and diodes (Kd521a) as the original circuit. Some of the capacitors as well.