The MXR Phase 90 is a classic phaser pedal that has been delivering its distinctive swooshing, swirling modulation since 1974, making it one of the longest-running and most recognized effects pedals in production. The single-knob design could not be simpler: the Speed control adjusts the rate of the phase sweep, and that is it. This minimalist approach is both the pedal's greatest strength and its defining character " it does one thing, and it does it exceptionally well. At slower speeds, the Phase 90 produces a gentle, undulating sweep that adds warmth and three-dimensional movement to clean and slightly overdriven tones. At faster settings, it creates the dramatic, jet-like whoosh that has become synonymous with classic rock guitar. The four-stage phaser circuit produces a rich, musical sweep with a pronounced peak that gives the effect its characteristic vocal quality. The Phase 90 sits beautifully in a mix, adding motion and interest without overwhelming the core guitar tone. It pairs particularly well with overdriven amplifiers, where the phase effect interacts with the harmonics to create complex, evolving textures. The bright orange enclosure is instantly recognizable and built to last, with the compact footprint fitting easily on any pedalboard. The Phase 90 is essential for rock, funk, and psychedelic players who want an authentic, vintage phaser sound. The single-knob design means there is no control over the depth or feedback of the phase effect, limiting tonal adjustment to speed only.

Effects Pedals

A single-knob classic phaser delivering distinctive swooshing modulation since 1974, with a four-stage circuit producing rich vocal sweep that pairs beautifully with overdrive.