While this may look like a plain aluminum box, the Fairfield Circuitry Shallow Water K-Field Modulator douses your playing in an ocean of undulating chorus, vibrato, pitch-shifting and more that will keep even the most adventurous pedal head adrift at sea for days on end. Built on the theory of simulation mathematics, the Shallow Water generates a short delay and continually modulates the effect for lush, morphing sound reminiscent of a tape echo traveling through space and time. Watching the demo is an odyssey in and of itself.