Pricing and availability

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Average Price: $298

High-end/Boutique

$75

$201+

Price Tier

Budget

Standard

High-end

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Description

Dive into the retro-laden waves of the Mu-Tron Phasor, a cornerstone of '70s sound innovation. Not just a relic, this phaser pedal combines nostalgia with the precision modern players crave. Its straightforward controls mask the complexity of the tones it can create, from subtle swirls to profound, undulating waves that could only originate from the minds at Musictronics. Perfect for guitarists seeking that classic vibe or anyone looking to add a slice of musical history to their pedalboard. The Mu-Tron Phasor is your ticket to a bygone era, reimagined for today's sonic explorations.

Key Features:

  • Classic '70s phase shifting with a modern twist, providing a range of sounds from subtle to extreme
  • Simple yet versatile controls, including speed and depth knobs for precise tonal shaping
  • A durable, road-ready design that pays homage to its historic origins while standing up to the demands of modern performance
  • Compatible with a wide range of instruments, offering versatility for guitarists, bassists, and keyboard players alike

Product specs

Brand Mu-Tron
Model Phasor
Finish White
Year 1975
Made In United States
Categories Phaser Pedals

FAQs

What kind of sound can I expect from the Mu-Tron Phasor?

The Mu-Tron Phasor offers a rich, sweeping effect that is distinctive and pronounced, even at slower phasing rates. It's known for producing a classic, vintage phasing sound with low noise and high signal-handling capability.

Is the Mu-Tron Phasor suitable for both guitar and bass?

Yes, the Mu-Tron Phasor is versatile and can be used with both guitar and bass, providing a smooth, dynamic phasing effect that enhances the tonal range of both instruments.

Does the Mu-Tron Phasor require a specific power supply?

The Mu-Tron Phasor typically requires a standard 9V power supply, but always check the specific model requirements to ensure compatibility and optimal performance.

How does the Mu-Tron Phasor differ from other phaser pedals?

The Mu-Tron Phasor is renowned for its unique feedback circuitry and vintage sound, which sets it apart from other phaser pedals by delivering a more pronounced and musically rich phasing effect.

Can the Mu-Tron Phasor be used in a live performance setting?

Absolutely, the Mu-Tron Phasor is well-suited for live performances, providing consistent, high-quality phasing effects that add depth and dimension to your sound on stage.

Pedals and Effects

Pedals and Effects

Pedals And Effects: Mu-Tron Phasor by Musitronics

Video thumbnail for Pedals And Effects: Mu-Tron Phasor by Musitronics by Pedals and Effects

Pedals And Effects: Mu-Tron Phasor by Musitronics

Pedals and Effects

Pedals and Effects

Video thumbnail for 1974 Musitronics Mu-Tron Phasor Vintage Effects DEMO by The Guitologist

1974 Musitronics Mu-Tron Phasor Vintage Effects DEMO

The Guitologist

The Guitologist

Video thumbnail for Mu-Tron (Musitronics) Vintage Phasor by Pedal of the Day

Mu-Tron (Musitronics) Vintage Phasor

Pedal of the Day

Pedal of the Day

Video thumbnail for George Duke - Mu-tron demonstration record 1975. by Adrian Täckman

George Duke - Mu-tron demonstration record 1975.

Adrian Täckman

Adrian Täckman

Video thumbnail for MUSITRONICS MU-TRON PHASOR I BASS DEMO by Bassklasse

MUSITRONICS MU-TRON PHASOR I BASS DEMO

Bassklasse

Bassklasse

Video thumbnail for Musitronics Mu-Tron Phasor by Joby

Musitronics Mu-Tron Phasor

Joby

Joby

Reviews

PROS

  • Outperforms alternatives, offering unparalleled phasing effects

  • Lush, wonderful sound enriches any source without cutting low frequencies

  • Provides very clean, round, and full tones

  • Adjustable depth and speed knobs for versatile sound shaping

  • Exceptional performance both live and in the studio

  • Minimal noise with little hiss or hum

CONS

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Mu-Tron Phasor.

Use cases and applications

  • Described as providing an "elegant" phasing effect, particularly on fast settings, adding a delicate ripple to notes, suitable for both guitar and synth applications.

    Source
  • Bass amps are highlighted for their rich sound with guitars, enhancing the lows, mids, and highs, particularly effective with a Gretsch guitar and the Mu-Tron Phasor.

    Source
  • Users report exceptional modulated crunch tones when pairing the Mu-Tron Phasor with fuzz pedals, enhancing the phatness and funkiness of the sound.

    Source

Comparisons

  • Compared to the Electro-Harmonix Small Stone, which is noted for being heavily swirly and cartoonish on fast settings, while the Mu-Tron Phasor is seen as more refined.

    Source
  • The MXR Phase 90 script version reissues are mentioned as affordable alternatives aiming for a similar vintage-style phase sound.

    Source
  • The Phasor III reissue is brighter than the original, with a more hi-fi sound; additional pedals may be needed to replicate the vintage rolled-off high end and saturation.

    Source

Value and pricing

  • The Mu-Tron Phasor was priced around $225 in 2017-2018, considered affordable for a vintage-style phaser, though prices have since increased significantly.

    Source

User experience

  • The Mu-Fx Phasor 2x is favored by some users over the Phasor II for its versatility and tone.

    Source
  • Despite its large size, the Phasor is praised for its stellar studio jam session performance, suggesting it's best suited for non-portable setups.

    Source

Features and functionality

  • The Micro-Tron IV offers swappable components for varying sweep setups, providing more customization without adjusting internal trim pots.

    Source

4.0 out of 5

Based on 0 Reviews and 2 Ratings

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Artist usage

Add artist
See how Dean Ween uses Mu-Tron Phasor

Dean Ween

Guitarist

Ween

...
Verified via Premierguitar

"What are some of your favorite vintage pedals? The Mu-Tron stuff, for sure. Mu-Tron phasers and the envelope filter."

See how Ruban Nielson uses Mu-Tron Phasor

Ruban Nielson

Singer, Guitarist

...
Verified via Photo

Right at the front of the pedalboard sits Ruban's Mu-Tron Phasor.

See how Eddie Hazel uses Mu-Tron Phasor

Eddie Hazel

Singer, Guitarist

Funkadelic

...
Verified via Premierguitar

"Eddie started right out learning the pedals—the wah wah, the Big Muff, and phasers and shit. We bought all the gadgets in the world, [especially] once Bootsy got with us." - George Clinton

See how Ken Andrews uses Mu-Tron Phasor

Ken Andrews

Singer, Guitarist

Failure

...
Verified via YouTube

At 4:06, Ken Andrews mentions the use of a Gen 1 Mutron Phaser all over Fantastic Planet. During their performance at the Whisky in December 1996, you can even spot the phaser right next to his Mutron Octave Divider.

See how Tim Gane uses Mu-Tron Phasor

Tim Gane

Guitarist, Bassist

Stereolab

...
Verified via Photo

In a post on the official Stereolab Instagram account, a photo of Tim Gane's pedalboard clearly shows the inclusion of a Mu-Tron Phasor. The post humorously notes, "Research has proven that the most popular images on social media are of cats and guitar pedals," and thanks Joe at The GigRig for his assistance.

See how George Duke uses Mu-Tron Phasor

George Duke

Singer, Keyboardist

Earth, Wind & Fire

...
Verified via YouTube

The phaser used on George Dukes classic, Hip Pockets. This is from his demo album of the mu-tron products.

See how Gareth Jones (producer) uses Mu-Tron Phasor

Gareth Jones (producer)

Music Producer

Depeche Mode

...
Verified via Futurestyle

Musitronics Mu-Tron Phasor is included in the list of Gareth Jones' gear.

See how G. E. Smith uses Mu-Tron Phasor

G. E. Smith

Guitarist

Hall & Oates

...
Verified via Premierguitar

G.E. Smith discusses his original Mu-Tron Phasor in a Premier Guitar Rig Rundown interview with John Bohlinger, highlighting its role in his effects setup.

See how Jake Snider uses Mu-Tron Phasor

Jake Snider

Singer, Guitarist

Minus the Bear

...
Verified via YouTube

At 1:44 of this "Rig Rundown" with Premier Guitar Jake talks about his Mu-Tron Phaser saying "it’s just a really nice old rich thick phaser that I love to use."

See how Chris McQueen uses Mu-Tron Phasor

Chris McQueen

Guitarist

Snarky Puppy

...
Verified via Photo

A Mu-Tron Phasor can be seen in this photo of Chris' effects setup from the Snarky Puppy - We Like it Here recording sessions in October, 2013.

See how Hanni El Khatib uses Mu-Tron Phasor

Hanni El Khatib

Singer, Guitarist

...
Verified via Twitter

The pedal is nestled on Hanni's pedal board to the left.

See how Anthony Marinelli uses Mu-Tron Phasor

Anthony Marinelli

Keyboardist, Composer

...
Verified via YouTube

At 1:02:25 in the video titled "My Synth Studio Revealed | Studio Tour 2025" by Anthony Marinelli Music on YouTube, a Mu-Tron Phasor is clearly visible as part of Anthony Marinelli's pedal collection.

Used With

Based on how musicians on Equipboard use Mu-Tron Phasor, it is most commonly used with the following gear.

2 alternative and related items for Mu-Tron Phasor, curated by the Equipboard community.

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