The BOSS AC-3 is an Acoustic Simulator that transforms an electric guitar into various acoustic guitar sounds using advanced COSM modeling technology. Musicians often find themselves in situations where carrying an extra guitar isn't feasible, and the AC-3 addresses this dilemma perfectly. It features four simulation modes: Standard, Jumbo, Enhanced, and Piezo-equipped, allowing users to adapt effortlessly to different performance needs. This compact pedal not only mimics the sound of acoustic guitars with remarkable precision but also includes controls to fine-tune the tonal quality. The built-in reverb adds depth, making it a versatile tool for any guitarist.