The Digitech Whammy 4 Pitch Shifter Guitar Effect Pedal is a digital pedal designed for electric guitars. It allows guitarists to shift pitches seamlessly and create unique sounds. This model, made by DigiTech in China, is a top choice for musicians looking to add versatility and creativity to their performances. The pedal comes with an AC adapter for power supply, making it convenient for use during gigs or practice sessions.