Mu-Tron Bi-Phase

^# 26

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$2,099.00 Price Tier: High-end

5.0 (8)

This product is Vintage or Discontinued

Newer option

Mu-Tron Bi-Phase II

$999.00

Find out who is using Mu-Tron Bi-Phase

27 wishlisted

38 saved

Page last updated Jun 09, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated June 9, 2026.

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Reviews

Price

5.0 (6)

$2,099.00 8 available Used

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Average Price: $2,099

High-end/Boutique

$75

$201+

Price Tier

In the Phaser Effects Pedals category, Mu-Tron Bi-Phase is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

Budget

Standard

High-end

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Description

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The Mu-Tron Bi-Phase, a masterpiece from the innovative 70s, is more than just a phaser effects pedal. This legendary device, born from the creative minds at Musictronics, offers dual channel phase shifting with a distinct set of two "Sweep Generator" sections. This pedal is available in two variations: the classic two-button design or the slightly more valuable optical pedal, both presenting a unique and immersive sonic experience.

Key Features:

Dual-channel phase shifting
Two "Sweep Generator" sections
Available in two-button or optical pedal
Pioneered by Musictronics in the 70s
Produced from 1972 to 1981

Product specs

Brand	Mu-Tron
Model	Bi-Phase
Finish	Blue
Year	1970s
Made In	United States
Categories	Phaser Pedals

FAQs

What makes the Mu-Tron Bi-Phase unique compared to other phaser pedals?: The Mu-Tron Bi-Phase is unique due to its dual phaser circuits, allowing for complex, swirling phase effects. This setup provides a rich, vintage sound that can be customized extensively, making it a favorite for musicians seeking a distinctive phasing experience.
Can the Mu-Tron Bi-Phase be used with instruments other than guitar?: Yes, the Mu-Tron Bi-Phase can be used with various instruments, including keyboards and bass, to achieve lush, modulated sounds. Its versatile design makes it suitable for a wide range of musical applications beyond just guitar.
How does the Mu-Tron Bi-Phase handle live performance settings?: The Mu-Tron Bi-Phase is well-suited for live performances, offering robust build quality and intuitive controls for on-the-fly adjustments. Its dual phaser circuits provide dynamic soundscapes that can enhance live shows with rich, evolving textures.
Does the Mu-Tron Bi-Phase require a specific power supply?: The Mu-Tron Bi-Phase requires a specific power supply, typically a 24-volt adapter, to operate correctly. It's important to use the appropriate power source to ensure optimal performance and avoid potential damage to the pedal.
Is the Mu-Tron Bi-Phase suitable for studio recording?: Yes, the Mu-Tron Bi-Phase is excellent for studio recording, offering a wide range of phase modulation options that can add depth and character to recorded tracks. Its vintage sound quality is particularly valued in professional recording environments.

Videos

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Reverb

Funky Vintage: Mu-Tron Bi-Phase | Reverb Video Demo

Reverb

Mu-Tron Bi-Phase

hiwattbob

mrfett's Mu-Tron Bi-Phase Review

mrfett

George Duke - Mu-tron demonstration record 1975.

Adrian Täckman

Mu-Tron Bi-Phase

Miguel d'Oliveira

Mu-Tron Bi-Phase | Rare and Vintage Phaser Pedal!

The Upper Bout

Reviews

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PROS

Unlimited phase options in mono or stereo fields
Allows for both shallow and deep sweeps
Built like a tank, durable for industry use
Offers insane phase sweeps for creative sound manipulation
Versatility from subtle to intense sounds, fitting various music styles
Can use two phasors separately or together for more sound diversity

CONS

Requires footswitch for full operation, which can be lost or damaged
Takes up significant pedalboard space
Can be daunting to use due to its complexity

Owner Insights

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

Comparisons

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The Behringer Bi-Phase clone is favored over the Mu-Tron reissue by some users, despite the original Mu-Tron being preferred overall.
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Some users compare the Bi-Phase ii's subtlety to classic phase pedals like the MXR Phase 90, noting it provides a more complex and layered sound.
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Features and functionality

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Behringer's Dual Phase has clicking footswitches and a CV input that may not work with all expression pedals, despite being advertised as compatible.
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The Behringer Dual Phase was initially sold under the name BiPhase, with a name change following legal issues and parts shortages affecting availability.
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The Mu-Tron Bi-Phase ii offers a subtle phasing effect, which some users find less pronounced than expected, suggesting its suitability for more nuanced soundscapes.
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Mods and upgrades

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Opening the Behringer unit to adjust trim pots can make the phaser rate slower and increase input gain, altering sound resonance and volume.
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A PedalPCB Duo-Phase build is a suggested project for DIY enthusiasts, though it's not a perfect clone, unlike the more complex Dead End FX version.
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Setup and maintenance

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Adjusting the rate trim pot on the Behringer can slow phasing significantly, while the gain trim pot can enhance sound resonance.
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Value and pricing

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The Behringer Bi-Phase clone can be found under $200 if purchased during restocks, but is often resold at higher prices due to demand.
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The original Mu-Tron Bi-Phase can fetch over $3,000 on Reverb, with the lowest current listing at $1,600, reflecting high collector demand.
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Use cases and applications

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Users often route the Bi-Phase ii in stereo settings, allowing for more expansive soundscapes, particularly in ambient and psychedelic music genres.
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Users commonly run the Bi-Phase through electric organs and bass guitars, emphasizing its versatility across different instruments.
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It's been noted that the Bi-Phase can be integrated into setups for artists like Billy Corgan and Jerry Garcia, highlighting its iconic status in rock music.
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User experience

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Owners note a learning curve in maximizing the pedal's potential, often requiring experimentation with different settings to achieve desired effects.
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Owners advise never selling an original Bi-Phase, considering it a "holy grail" pedal and a lifetime investment.
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