3
Main Features
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Effects processor utilizes COSM technology to transform electric guitar input into beautiful
acoustic guitar sounds.
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MODE knob allows you to select from a choice of four different acoustic guitar characters
(tones).
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Features two types of output jacks, one for guitar amps and another for line out jacks, pro-
viding you with outputs suited to the connected device.
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“BODY” and “TOP” knobs can be used to adjust the acoustic guitar’s characteristic body
resonance and harmonics, allowing you to produce a wide variety of tones.
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Includes high-quality reverb developed exclusively for the AC-3.
COSM (Composite Object Sound Modeling)
Composite Object Sound Modeling (COSM) is BOSS/Roland’s innovative and powerful sound
modeling technology.
COSM analyzes the many factors that make up the original sound, such as the electrical and
physical characteristics of the original, and then produces a digital model that can reproduce
the same sound.
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