


Warm Audio
Warm Audio WA-MPH Mutation Phasor II
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Warm Audio WA-MPH Mutation Phasor II – analog guitar effect pedal delivering classic electro-optical phase modulation inspired by iconic 70s designs. It recreates the deep, swirling and psychedelic character of vintage phaser circuits.
Classic phase modulation with full control
The pedal features three main controls: Rate, Depth and Feedback. Rate adjusts the speed of modulation from slow, smooth sweeps to fast pulsating effects. Depth controls the width of the phase sweep, while Feedback adds intensity and emphasizes the characteristic swirling resonance.
Electro-optical analog design
The electro-optical phase-shifting circuit delivers organic response and natural modulation behavior. High-quality components including classic op-amps and vintage-style parts ensure wide frequency response and rich harmonic content. Suitable for guitar, bass and synthesizers.
KEY FEATURES
- Fully analog phaser effect
- Electro-optical phase-shifting circuit
- Inspired by classic 1970s phasers
- Controls: Rate, Depth, Feedback
- Wide modulation range (slow to fast sweeps)
- Subtle to intense modulation capability
- Premium components (op-amps, film capacitors, carbon resistors)
- Switchable bypass (true/buffered)
- Rugged steel enclosure
- Compatible with guitar, bass and synthesizers
TECHNICAL SPECIFICATIONS
- Type: phaser (modulation effect)
- Signal path: fully analog
- Circuit: electro-optical phase shifter
- Controls: Rate, Depth, Feedback
- Modulation range: approx. 0.1 Hz – 18 Hz
- I/O: 1x input, 1x output (6.3 mm jack)
- Bypass: switchable (true / buffered)
- Power: 9V DC or 9V battery
- Current draw: approx. 150 mA
- Dimensions: approx. 164 x 90 x 52 mm
- Weight: approx. 0.9 kg

