The Walrus Audio Fundamental Phaser is a versatile digital phaser pedal designed for both beginners and professionals. It features three distinct phaser algorithms, allowing for a wide range of sounds from subtle modulation to intense phasing. With three sliders and a three-way switch, users can easily adjust the rate, feedback, and depth of the effect. This pedal offers a comprehensive phaser experience, including light, medium (analog-style), and heavy phaser modes.