From Walrus Audio-

The Vanguard was designed to create evolving beds of sound; from thick and sweeping harmonics to symphonic tidal waves. It operates as a series phaser system - two phasers working together to give unimaginable texture. The user has three selectable modes to shape the series phaser, sending your signal through a single 10-stage phaser with the option to pass through a second phaser. The second phaser, found on the second row of rotary controls, offers three different phaser voicings at the flip of a toggle switch; 10-stage with regeneration, 6-stage with pitch bend, and 4-stage with filter. This generates anything from slow phased foothills to untamed and violent sweeps.

This phaser is lightly used and we'll ship it to ya safely and swiftly! Give us a shout at the shop with any questions you may have.