MXR Phase 90

The MXR Phase 90 is a phaser effects pedal introduced in 1972 by MXR.

MXR M-101 Phase 90
EVH90 Phase 90

History

The Phase 90 was the first pedal sold by MXR and helped launch the company in 1974.[1] The original model had a simple orange enclosure with a script style MXR logo. In 1977 MXR changed its logo to a block style. There was a transitional period in which some Phase 90s with script logos had box logo circuits, and vice versa. Production ceased when MXR went bankrupt in 1984.[2]

When Jim Dunlop bought the MXR brand, production resumed. The Dunlop models have an LED to indicate the effect is engaged, and an optional AC power supply. There are several styles, including the standard block logo version, a reproduction of the script logo version, and an Eddie Van Halen signature model.[3] Van Halen first heard Robin Trower use the pedal in the mid-1970s, and used it on songs such as "Eruption", "Atomic Punk", "Ain't Talkin' 'bout Love", "Everybody Wants Some!!", and "Drop Dead Legs".[4] The 1974 Hand Wired Phase 90 is a recreation of an original 1974 pedal using new old stock (NOS) electronic components.

Description

The Phase 90 has an orange enclosure with a single control knob:

  • Speed - varies the speed of the phasing effect.

References
  1. Hunter, Dave (2004). Guitar effects pedals: the practical handbook. Hal Leonard. p. 81. ISBN 978-0-87930-806-3.
  2. Hughes, Tom (2004). Analog Man's Guide to Vintage Effects, p. 75. For Musicians Only Publishing. ISBN 0-9759209-0-1.
  3. "MXR EVH Phase 90". Jim Dunlop. Retrieved 13 September 2010.
  4. "Eddie Van Halen on How He Created His Signature Sound Using MXR's Phase 90 and Flanger Pedals". Guitar World. Retrieved 30 June 2020.

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