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AcousticControlCorp.com

21510408 2209

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 the 4 bottom screws to access 

battery connection. High quality 

alkaline 9-volt battery can be used for 

approximately 4 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.  MODE SWITCH
 

Select from the 3 modes:

•  Studio emulates a recording studio
•  Spring emulates a spring reverb
•  Plate emulates a reverb plate

8.  MIX Knob
 

Adjusts reverb from minimum, to 100% 

“wet”: at maximum, all the sound is 

from the reverb, with no “dry” signal.

9.  DECAY Knob
 

At low settings, the reverb time is short, 

at high settings, the reverb time is long.

10.  TONE Knob
 

Adjusts the reverb from dark to bright.

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Underside of pedal

(Bottom removed for battery access)

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