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1.  DC 9V Power Input Jack
 

You can power your GAMMA Series 

pedal from a 9-volt regulated DC 

adapter (plug polarity is positive on 

the barrel and negative in the center).

2.   Battery Capability
 

Use a Phillips head screwdriver to 

remove 4 bottom screws to access 

battery connection. High quality 

alkaline 9-volt battery can be used for 

approximately 40 hours of continual 

operation. If pedal won’t operate when 

battery is installed, battery may be 

discharged, and should be replaced 

with a fresh, fully-charged battery. Or 

connect a compatible power supply 

for non-battery operation.

3.  Footswitch
 

Push down the footswitch to toggle 

between on and bypass status.

4.  LED
 

When the LED is lit, the effect is on. 

When it’s off, the effect is bypassed.

5.  INPUT Jack
 

¼” mono audio jack, to receive the 

signal from your guitar or a previous 

pedal. Pedal draws power only when 

this jack has a plug inserted.

6.  OUTPUT Jack
 

¼” mono audio jack, outputs the signal.

7.  FAT SWITCH
 

Fat setting adds low frequency energy 

which can help thicken your tone for 

single note lines.

8.  LEVEL Knob
 

Adjusts output level (volume).

9.  DRIVE Knob
 

Adjusts the amount of distortion.

10.  TONE Knob
 

Adjusts the high frequency response, 

from dark to bright. Try the center 

(noon) position as a starting point.

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Underside of pedal

(Bottom removed for battery access)

21510408 2209

AcousticControlCorp.com

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