The Amp phase unit has two circuits: phase and reactance. By the use of the phase circuit many sounds are available, but if the reactance knob is brought into use it is possible to overdrive the phase unit producing even more colourful tones.
- Colorsound PhazeX
- Colorsound Phazer
- Vox (by Sola Sound) Phazer (made by Colorsound)
- Dharma Sound Phaser (relation with Colorsound?)
- Colorsound Fuzz Phazer
- (unknown, U.K.) BT-100 Phaser (?????)