Check the listing for details. Walrus Audio Fundamental Series Phaser. Condition: New. Listed at 129.99 USD. The Fundamental Phaser is a versatile digital emulation of a classic phaser. With 3 types of Phaser algorithms to select from, you can get sounds ranging from light tonal modulation to a highly modulated and resonant phaser. - Rate: Control the rate of the LFO modulating the signal. - Feedback: Control the amount of affected signal sent back into the feedback loop. - Depth: Control the depth of the LFO waveshape. - Slide Switch – The slide switch allows you to change between 3 distinct flavors of the pedal. - Light – A scaled-back phaser that slightly modulates your signal. - Medium – Emulates a classic warm analog phaser. - Heavy – Multi-voiced phaser with lots of experimental sounds. - Bypass Switch – Turns the effect on and off. - Bypass LED - Illuminated when the effect is engaged. - Input Jack - 1/4 inch cable from the instrument. - Output Jack - 1/4 inch cable to amplifier. - 9v Jack – 9-volt DC, Center Negative, 100mA min.