This unit is slightly used and in working order. It ships with a USB power supply. The Zoom A1 Four Acoustic Guitar Digital Multi Effects Pedal is a high-quality digital pedal designed specifically for acoustic guitars. With its versatile multi-effects capabilities, this pedal allows guitarists to achieve a wide range of tones and effects to enhance their sound. The Zoom brand is known for producing reliable and professional-grade audio equipment, making this pedal a dependable choice for musicians looking to elevate their acoustic guitar playing experience.