Just before the legendary 4-knob Fender Blender was discontinued in the early 80's it was replaced by the 3-knob Fender Blender, a rare bird indeed!! Very few examples have shown up and not even Fender has a schematic for it. The Flender II was taken from an actual 3-knob Fender Blender for authenticity. The unit features a 4-way rotary switch that switches between 3 different fuzz tones and an FET preamp circuit for a clean boost. The SUSTAIN control only works on the fuzz settings while GAIN works on all settings. Clips coming soon....