MXR 90 PHASE 90 EDDIE VAN HALEN
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MXR
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From the original Phase 90 to the EVH signature model: the "swirl machine" revisited
The Phase 90 is one of the most recorded phasers in guitar history: a seemingly simple modulation capable of transforming a clean tone into a living texture or adding that characteristic three-dimensional movement to a tight crunch. With the MXR EVH90, the goal isn't to reinvent the formula but to bring it as close as possible to what Eddie sought: a musical phasing that integrates with distortion without muddying the attack, and that can shift from an "old school" character to a more modern presence depending on the song.
Visually, the nod is immediate: the finish inspired by iconic EVH stripes recalls the pedal's rock DNA. But it's especially the Script switch that sets the EVH90 apart in the lineup: one pedal covering two Phase 90 approaches without multiplying controls or complicating your pedalboard.
Who is the MXR EVH90 for, and in which styles does it make a difference?
The MXR EVH Phase 90 is suited both for guitarists new to modulation and experienced players who want a "plug and play" phaser with instantly professional results. Its single potentiometer allows quick dialing of the rotation tempo, making it ideal for live use (fast adjustment between songs) as well as studio work (efficient takes without losing inspiration).
Stylistically, it naturally excels in rock and hard rock, but also shines in blues and funk : on a clean tone, it adds width and movement; on an overdrive, it delivers that famous "swirl" that makes the sound feel like it's breathing. It works very well before distortion for a smoother, singing effect, or after for a more pronounced and dramatic modulation, depending on your signal chain and amp.
Technical specifications
| Effects | Chorus / Flanger / Phaser, Effects | EQ | No |
| Technology | Analog | Settings | speed |
| Format | Pedal | Use | guitar |
| Inputs | Jack | Color | Red |
| Outputs | Jack | Power supply included | No |
| True bypass | Yes | Power supply | 9V battery, DC 9 V |
| Switch | Script | ||
Questions frequently asked
What sound does the MXR Phase 90 Eddie Van Halen produce?
Its analog circuit creates an expressive phasing effect, ranging from a subtle movement on clean tones to a more pronounced "jet swirl" sweep on crunch or high-gain settings. The Speed control sets the rotation speed of the effect.
What is the purpose of the EVH90 Script switch?
The push/push Script switch selects between a softer vintage tone and a more modern, sharper response.
Does the pedal operate on a 9 V power supply?
It accepts a 9 V battery or a 9 V DC power supply, neither included. The specified current draw is 8.2 mA. Connections are made via 6.35 mm jack input and output.
Where should this Phase 90 be placed in an effects chain?
Placed before distortion, the phasing blends more smoothly into the sound and maintains a singing character. Placed after distortion, the modulation stands out more distinctly.
Does the bypass preserve the signal when the effect is off?
The true hard bypass isolates the effect when the pedal is not engaged.



