Pricing and availability
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Average Price: $137
Standard/Professional
$75
$201+
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Price History
Based on price data from 7 merchants for "Warm Audio Mutation Phasor II". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Introducing the Warm Audio Mutation Phasor II Phaser Pedal, a gear that makes you feel like you've stepped back to the 70s. This isn't just a phaser pedal, it's a homage to an era of musical experimentation, delivering swirling, psychedelic sounds. Its faithful reproduction of the original 70s circuit using high-quality components guarantees full sonority and accurate recreation of the classic phase-shifting modulation.
Whether you're after some depth, a bit of wobble, or instant funk, the Mutation Phasor II has got you covered. With controls for Rate, Depth, and Feedback, you can dial in the perfect amount of phase-shifting effect to suit your sound.
The Mutation Phasor II doesn't just sound good, it's built to last with an ultra-tough, vintage-vibe steel case. It's meticulously hand-tested and inspected by trained technicians in Austin, TX USA, ensuring you receive a pedal that's ready to rock right out of the box.
Key Features:
- Electro-optical phase-shifting pedal
- Faithful reproduction of the original 70s circuit
- High-quality components for full sonority and psychedelic sounds
- Controls: Rate, Depth, Feedback
- 6.3 mm jack input and output
- Power supply connection: Barrel connector 5.5 x 2.1 mm, centre negative
- Power consumption: 150 mA
- Powered by a 9 V battery or a 9 V DC mains adapter (not included)
- Switchable true or buffered bypass
- Meticulously hand-tested and inspected by trained technicians in Austin, TX USA
Product specs
| Pedal Type | Phaser |
| Analog/Digital | Analog |
| Effects | Optical Phaser |
| Inputs | 1 x 1/4" |
| Outputs | 1 x 1/4" |
| Bypass Switching | Buffered Bypass |
| Power Source | 9V DC power supply (sold separately) |
| Power Usage | 150mA |
| Batteries | 1 x 9V |
| Height | 2" |
| Width | 3.5" |
| Depth | 6.5" |
| Weight | 2 lbs. |
FAQs
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What kind of power supply does the Warm Audio Mutation Phasor II require?
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The Warm Audio Mutation Phasor II requires a 9V DC power supply, which is sold separately. It can also be powered by a 9V battery.
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Is the Warm Audio Mutation Phasor II suitable for use with instruments other than guitar?
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Yes, the Warm Audio Mutation Phasor II can be used with a variety of instruments, including keyboards and bass, to add depth and swirling effects.
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What type of bypass does the Warm Audio Mutation Phasor II feature?
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The Warm Audio Mutation Phasor II features buffered bypass switching, which helps maintain signal integrity when the pedal is not in use.
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How does the Warm Audio Mutation Phasor II differ from other phaser pedals?
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The Warm Audio Mutation Phasor II is an analog pedal that replicates the vintage phaser sounds of the 1970s, offering a distinctive optical phaser effect with rich, swirling tones.
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Can the Warm Audio Mutation Phasor II be used in a live performance setting?
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Yes, the Warm Audio Mutation Phasor II is well-suited for live performances, providing consistent and reliable phasing effects with its durable build and buffered bypass.
Videos
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Have you every heard anything lusher...?? Warm Audio Mutation Phasor II
Reviews
PROS
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Quiet operation compared to similar models
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Solid build quality and durability
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Offers classic phaser effects with additional ring-mod, uni-vibe, and auto-wah flavors
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Versatile across multiple instruments (guitar, bass, keys, synth, drums)
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Affordable, offering good value for money
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Aesthetically pleasing design
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Rate control provides wide range from subtle to extreme effects
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Encourages creative and funky play styles
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High-quality recreation of classic pedals
CONS
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Larger size may not fit well on smaller pedalboards
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Rate control can be overly sensitive, requiring careful adjustment
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Lacks easy battery access, complicating battery changes
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Warm Audio Mutation Phasor II.
Features and functionality
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The Mutation Phasor II is optical, offering more complexity compared to other phasers, making it a versatile choice for varied phaser effects.
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The preamp feature of Warm Audio pedals, including the Mutation Phasor II, is highlighted as an "always-on" feature due to its subtle enhancement of tone.
Source
Comparisons
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While both the Mutation Phasor II and Jet Phaser are large, the Jet Phaser is notably oversized, making the Mutation Phasor II more practical for pedalboard setups.
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Users report noticeable volume loss with the Jet Phaser, while praising the Mutation Phasor II for its consistent output, making it a preferable choice for some.
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User experience
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An owner, after using the Mutation Phasor II, expressed satisfaction and plans to explore more phasers with envelope control, indicating the pedal's inspiring performance.
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Use cases and applications
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The Mutation Phasor II's optical design makes it suitable for users seeking a rich, dynamic phasing effect, without the need for additional fuzz.
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The Mutation Phasor II can mimic harmonic tremolo with a "hint of watery goodness," appealing to those exploring textures beyond standard phaser effects.
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Critic Reviews
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Artist usage
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