Main Features; Panel Descriptions - Boss AC-3 Owner's Manual

Main Features

7 Effects processor utilizes COSM technology to transform electric
guitar input into beautiful acoustic guitar sounds.
7 MODE knob allows you to select from a choice of four different
acoustic guitar characters (tones).
7 Features two types of output jacks, one for guitar amps and
another for line out jacks, providing you with outputs suited to
the connected device.
7 "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.
7 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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Panel Descriptions

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