6 stage phaser

Basic features
Speed: sweep the rate from the rythym of sea shore waves to a swelling throb to a machine gun pulse
Depth: amount of phasing from the threshold of consciousness through a rolling phase to a holistic phasing experience
Height: "manual" control of center phasing frequency
Blend: blend between wavering vibrato to rich chorus-y sounds or anything in-between
Ring: regenerative feedback for resonant color variation almost to the point of self-oscillation

The assembled pedal is discontinued, but the DIY kit is still available.

http://www.4mspedals.com/phaseur.php