The BOSS AD-2 Acoustic Preamp is designed for acoustic-electric guitarists who want to deliver natural, studio-quality sound in live settings. This compact pedal utilizes an advanced BOSS sound engine that features sophisticated processing capabilities to enhance the acoustic guitar's tone. One standout feature is the Acoustic Resonance, which effectively reproduces the resonant characteristics of an unplugged guitar sound. Additionally, the Ambience knob provides high-quality reverb that is specifically optimized for acoustic instruments, enriching the overall sound without overwhelming it. The pedal also includes practical stage tools like a notch filter for feedback control, a balanced DI output for direct PA connection, and a mute function for easy guitar changes during performances. In essence, the AD-2 ensures that the unique tonal qualities of acoustic guitars are preserved and enhanced on stage, making it an essential tool for live performers.