The Walrus Audio Fundamental Series Tremolo Pedal delivers classic optical tremolo with that signature chewy, pulsing movement. Choose from three waveform shapes—Sine, Square, and Random—to dial in everything from smooth, soothing modulation to glitchy, experimental textures. Control the effect with intuitive sliders: adjust Rate to set LFO speed, Depth to control tremolo intensity, and Volume to manage overall output. The slide switch lets you switch between waveforms on the fly, while the bypass switch engages or disengages the effect with visual feedback from the bypass LED. This pedal is in good condition and comes with its original box.