A Phaser Pedal is an effects unit used by musicians, particularly guitarists, to create a unique sound by altering the audio signal. It works by splitting the signal into two paths, applying a phase shift to one path, and then mixing them back together. This results in a swirling, whooshing effect that can enhance the overall tone of the instrument. Phaser pedals are popular in various music genres, including rock, funk, and electronic music. They can be adjusted for different speeds and depths of modulation, allowing musicians to customize their sound. Many famous guitarists, such as Jimi Hendrix and David Gilmour, have used phaser pedals to achieve their signature tones.