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Not-so-obvious Operation:

4-way EQ switch:

Changes the frequency response curve of the

tone knob.

1. Scooped

- classic big muff tone with scooped out mids

2. Flat

- brings back the mids for a flat response when the

tone knob is at noon.

3.  Mids

- Gives a little mid range boost

4.  None

- Removes the tonestack completely.  This was a

feature available on some vintage big muffs.  Keep in mind that the

tone knob will do nothing at all when in the NONE position.  Also

keep in mind that there will be a bit of a volume boost.

Toggle Switches:

Turns each of the 3 transistor clipping stages

on or off.

+V Knob:

Controls the voltage to the collector of its respective

transistor clipping stage.  Turning this knob clockwise increase

output

Gain Knob:

Controls the gain of its respective transistor clipping

stage.  Turning this knob clockwise increases drive

Bias Knob:

Controls the bias voltage of its respective transistor

clipping stage.  Turning this knob clockwise increases sustain and attack.

Turning this knob counter clockwise produces a gated

effect.

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