Warm Audio Mutation Phasor II

The Mutation Phasor II features the electro-optical phase shifting, variable rate, and ultra-analog feedback controls of the 70s legend. Delivering all of the vintage vibes of the original phaser pedal, Mutation Phasor II allows you to add depth, wobble, swirl, or “instant funk” to guitar, keys, bass, or anything you can dream of. To deliver a true-to-spec recreation of the circuit, the 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 steel case, the Mutation Phasor II delivers lush studio sound in a road-worthy build.

To deliver the authentic, experimental experience, the Mutation Phasor II brings back all of the original controls. 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. 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). 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.

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.

Key Features:

• Startingly accurate replication of a classic electro-optical phase-shifting pedal with feedback circuit from the 1970s
• Delivers the same deep, swirling, and lush phasing tone as the original — a tone favored by guitarists ranging from Billy Corgan to Robin Trower to Tom Bukovac
• Retains the intuitive 3-control configuration of the original
• Iconic heavy-duty metal-box enclosure that perfectly captures the vibe of the original
• Built with premium components, including RC4558P op-amps, vintage-style diodes, and hand-selected film capacitors and carbon resistors
• Buffered bypass operation keeps your signal strong when the pedal is disengaged