Boss AD-8 Acoustic Guitar Processor Floor-based acoustic guitar processor featuring COSM acoustic guitar modeling technology Turns ordinary piezo-equipped acoustic guitars into 6 of the world's finest acoustics Body and String Enhance controls simulate warm, miked acoustic sounds High-quality reverb tailored for acoustic guitar, 4-band EQ and anti-feedback Onboard chromatic tuner with mute function and quick pedal-based operation 4 Preset memory locations for switching acoustic sounds instantly Balanced XLR outputs allow direct co