The idea here is to give you two differently voiced drive circuits that you can blend together to perfection/complete nastiness. The result is a really tweakable high-gain pedal that'll play nicely with a whole range of guitars and other pedals. 

Model: Red Witch Famulus
Made in: China, recent model (serial FS090387)
Type: overdrive/distortion, blendable
Power: standard 9v supply or battery, draw 39mA approx
Equivalent new street price (approx): $299aud
Switching: true bypass
Mods: none
Accessories: no box or manual
Condition notes: no major marks, very good condition

Controls:
Volume: output volume
Tone: overall brightness of signal
Gain A: fairly flat EQ style gain
Gain B: mid-hump TS style gain
'Alchemy': blend knob between Gain A + B