Used pedal from Warm Audio! Includes original packaging.

Collar City Guitars is an authorized Warm Audio dealer and a Preferred Reverb Seller, buy with confidence!

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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.

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.

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

1. Deep, Phase-Shifting Electric Guitar Tones
2. Swirling, Psychedelic Modulated Keys
3. Funky, “Wobbly” Bass Lines
4. Saturation