CUSTOMER SUPPORT & SERVICE
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or call us at (855) 272-1090, Monday-Friday 8:00 a.m.-5:00 p.m. MST.
Your GAMMA SERIES Cumulus 3-Way
Reverb from Acoustic Control Corporation
allows you to add inspiring ambience to
your guitar sound, with a choice of three
classic flavors of reverb. Studio emulates a
crafted recording studio space, with a well-
controlled decay that avoids muddying up
your sound. Spring emulates the splash
and bounce of the spring reverb hardware
of vintage guitar amps. Plate emulates
the sound of a classic studio plate reverb,
for smooth, mellow ambience. It’s all built
into a road-ready metal chassis with metal
knobs, operating from either a 9-volt
battery, or 9-volt DC power supply.
OWNER’S MANUAL
FEATURES:
• Three classic reverb sounds: Studio, Spring, Plate
• All metal chassis and knobs and a road-ready design
• Simple operation for easy access to essential sound for electric guitar
• Operates from a 9-volt battery or 9V DC adapter (battery and DC supply not included)
• Mono audio input and output, with buffered bypass for consistent tone in any setup
SPECIFICATIONS:
Reverb Modes
Studio, Spring, Plate
Power Input Compatibility
9V DC (Center Negative)
Power Draw 130mA
Battery Compatibility
9V (Alkaline recommended)
4 Hours Run Time
Input
¼” Instrument Level Input
(650k Ohms Impedance)
Output
¼” Instrument Level Output
(1k Ohms Impedance)
Dimensions
4.59 in (D) x 27.5 in (W)
x 2.19 in (H)
Weight
.55 Lbs (8.8 oz)
