Voodoo Octave with caps mod and led replacement. Worth the time spent on it, turners out a nice fuzz for my bass. Bit warmer, way better tone control and brighter octave up. :
Joyo JF-12 Voodoo Octave Pedal - Used
Guitar Effects Pedals by Roger Mayer - Voodoo Axe
Analog Fox Voodoo Fuzz Gt402i (Germanium Fuzz Face Clone with Hendrix Mod) | Reverb