From Warm Audio

The Warm Audio Mutation Phasor II is an accurate recreation of a swirly phaser made famous in the experimental era of the 1970s. Mutation Phasor II has all of the vintage vibes of the original phaser pedal allowing you to add depth, wobble, swirl, or “instant funk” to guitar, keys, bass, or anything you can dream of. This electro-optical phase-shifting pedal is built with a true-to-spec recreation of the 70s circuit using premium components. True to the original pedal, Mutation Phasor II delivers all the rich depth and instant psychedelic tones, favored by innovative musicians and producers like Billy Corgan, Tom Bukovac, Robin Trower, and many more.

Feature Bullets

  • A 70s Legend for Experimenting: Add depth, wobble, swirl, or “instant funk” to guitar, keys, bass, or anything you can dream of. The Mutation Phasor II accurately recreates the deep phase-shifting psychedelic modulation of the original phaser made famous in studios during the 1970s.
  • Maximum Depth: For ultra-rich swirly phase-shifting, the “Depth” control allows you to vary the width of the sweep range - delivering deep modulation expected from a vintage all-analog pedal. Increasing the depth control adds width to the frequency range of the effect, impacting higher highs and lower lows. 
  • Rate Switch: Easily change the speed (or rate) of the phase-shifting effect to create more or less “wobble” in your tone - From 1/10th sweeps per second (slowest) to 18 sweeps per second (fastest).
  • Feedback: Increasing the “Feedback” control adds electric feedback to the “wet” phase-shifting signal. Increasing the feedback control creates a more intense phase sound with a particular emphasis on the sweeps - Especially noticeable at slower rate settings.
  • Lush Studio Sound, Road-Worthy Build: A true-to-original recreation of the 70s circuit, Mutation Phasor II is built with premium components including classic RC4558P op-amps, vintage-style diodes, carbon resistors, and film caps - Housed in an ultra-tough, vintage-vibe steel case. 
  • Hand-Tested In Austin, TX: Like all Warm Audio gear, the Mutation Phasor II is meticulously hand-tested and inspected by trained technicians with a passion for making music in Austin, TX USA.

Electro-Optical Phase-Shifting Pedal With Feedback Circuit

Phasing Rate
.1Hz - 18Hz

Premium Components, Including RC4558P Op-Amps, Various Vintage-Style Diodes, and Hand-Selected Film Capacitors & Carbon Resistors

Controls
Rate, Depth, and Feedback
Frequency Response
20Hz - 20KHz
Min Feedback
4V RMS, 11.2V Peak-to-Peak | Max Feedback: 2V RMS, 5.6V Peak-to-Peak
Signal-to-Noise Ratio
86 dB Below 2V Input
Current Draw
150 mA

Buffered Bypass

9-Volt Battery Or External 9V Regulated DC Adapter (center-negative)

Free 3-Year Warranty

Sound Pure stands behind our products. Free three-year warranty on this item. Coverage exclusions live in Terms & Conditions, Section 27.

Level of support and expertise that simply isn't available at big-box megastores. Read the warranty →

Returns

Not eligible for Try Before You Buy or the 48-hour approval period. Standard return policy applies — see Terms & Conditions, Section 18 for details.

Sound Pure Studios Control Room A — Durham, NC

Sound Pure Studios · Durham, NC

Come hear it in our control rooms.

Sound Pure is a working studio in Durham, NC — a 1,000 sq ft live room and two pro control rooms. Book a session to audition gear in a world-class acoustic space before you buy.

$149