phaser uses phase shift networks to create “notches” and “peaks” in the
signal response. When the amount of phase shift is charged the notches
and peaks move or “sweep”. The PT Phaser uses eight phase shift networks
that provide rich, deep phasing for guitar, keyboard or bass. The PT9’s
sweep circuit is exceptionally smooth and provides adjustable sweep
width and speed. The feedback control adjusts the level of phasing
intensity. The PT9 Phaser — versatility and sonic quality for stage or
There are black and silver label versions of this effect. If seller doesn’t specify label they go here.