Pi-Phase MKII
Prophecysound SystemsProduct Description
The Mu-Tron Bi-Phase is a dual phase-shifter originally developed by Musictronics USA in the 1970s. Known for its warm and deep sound, this pedal offers versatile control and audio-processing capabilities. The Prophecysound Pi-Phase mk2 aims to faithfully replicate the original unit's sound and control layout.
The Pi-Phase mk2 features an all-analog design that mirrors the original's specifications as closely as possible. Users have reported that it effectively captures the essence of the classic Bi-Phase, providing a consistent and reliable dual-phaser experience, unlike some vintage units that may have varying sound characteristics due to age and wear.
Technical Specifications
| Depth | 4.8 in |
| Width | 7.4 in |
| Height | 1.97 in |
| Current | 300mA |
| Voltage | 9V DC, center negative |
| Circuit Type | analog |









