Mutation Phasor II is an analog phaser pedal recreating a cult classic, with the sweep and resonance controls that let a phaser go from a slow subtle movement to a pronounced vocal sweep.

Analog phase, with enough control to be more than a novelty.

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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-original 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. Tech Specs 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) Popular Uses Deep, Phase-Shifting Electric Guitar Tones Swirling, Psychedelic Modulated Keys Funky. Wobbly Base Lines

At a Glance

How Is a Phaser Different From a Flanger?

A phaser uses all-pass filter stages to create notches in the frequency response, which sweep. A flanger uses a short delay, producing a more pronounced metallic sweep. Phasers are subtler and sit in a mix more easily.

What Does the Resonance Control Do?

It feeds the output back into the input, deepening the notches and making the sweep far more pronounced. Low settings give gentle movement, high settings give the vocal, hollow sweep the effect is known for.

Is It Analog?

Yes, an analog circuit rather than a digital model, which matters on modulation effects where the interaction between stages is the character.

Why Warm Audio

Warm Audio builds recreations of the classic studio hardware most engineers will never get to own, at a fraction of what the originals cost. The company sources premium components, CineMag and custom transformers, Fairchild-grade capacitors, NOS tubes where the design calls for them, and puts them into circuits copied closely from the originals rather than approximated. It has grown from microphones and preamps into compressors, EQs, direct boxes, guitar pedals and cable.