sign up to Joe's newsletter
for news and exclusive offers

Purveyors of the finest bespoke pedals
and stompboxes known to humanity


Prophecysound Systems, Pi Phase mk2


Price: 459.00 (Including VAT at 20%)

Prophecysound Systems, Pi Phase mk2
In stock


The Mu-Tron Bi-Phase is a dual phase-shifter invented and marketed by Musictronics USA in the 70s. It has become well-known and well-loved for it's 'classic' warm and deep sound, as well as the flexibility of it's control and audio-processing capabilities. The Prophecysound Pi-Phase mk2 seeks to accurately reproduce the sound and control layout of the original unit. Design goals for this reproduction of the Bi-Phase were:

to match, as closely as possible, the sound of the original
to maintain the same or a very similar control layout
to package the pedal in a size and format that would allow it to be used live
to dispense with the need for a special controller pedal for switching channels on/off, or for controlling pedal sweep
The Pi-Phase mk2 is all-analog and parts-accurate to the original, as much as is possible. To our ears, and the ears of many previous customers, the Pi-Phase mk2 sounds like the real-deal. How much like it? Original Bi-Phases are pretty old, and some units suffer from parts drift, lack of maintenance, and lack of calibration; each 'well-gigged' Bi-Phase can easily sound different to the next. With the Pi-Phase mk2 we give you 'factory fresh' dual-phaser experience.

The control layout was condensed to fit the targeted pedal format, while still providing a clear and understandable way of operating the unit. The original architecture of the dual LFOs / dual phase shifters has accurately been retained. As per the original, a manual isn't really even needed to explain how the unit works, or what the possibilities are. The resultant format - a pedal 50mm (~2") high, 188mm (7.4") wide and 122mm (4.8") deep - can readily be accommodated on most pedal-boards. The Pi-Phase mk2 is powder-coated and the labels are made out of industrial-strength polycarbonate for looks that will resist the worst live gigs have to offer.

No special extra foot-switch is necessary to operate the Pi-Phase mk2; true-bypass foot-switching for each individual phase channel is built into the pedal. An expression pedal may be connected to the CV PEDAL socket at the rear of the Pi-Phase mk2; the pot in the expression pedal should be connected across the sleeve and ring terminals of a stereo cable, with the wiper connected to the tip. We recommend an expression pedal that incorporates a 10k linear pot (e.g. Boss EV-5, EV-7) for optimal performance. Alternatively, you can connect an external CV signal in the range of 0-5V for controlling the Pi-Phase mk2 from a modular synth or modulation source. Either method - expression pedal or CV - allows controlling of LFO speeds and / or manual sweep of the phase sections.

Each pedal comes with reproductions of the original unit's program cards, including a new preset of Prophecysound design, and some blank program cards to record your own settings. A printed manual, with quick-start and detailed information on the pedal, is also supplied.

Please note these pedals require 9V or 12VDC, negative centre power supply (not included)


pic

Joe's Pedals ltd. 115 Chancellors Way, Exeter, Devon. Company no: 07328535

We accept these cards (if you are shopping outside the UK, place your order and your card company will convert the transaction to your own currency.)

Sagepay