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This design is archived and is not in current production. For more information on archived pedals, click on the Archive link at the top of this page.


The Signal Cypher is a special project that has been donated for the PCDH19 Alliance Auction to raise funds for epilepsy research in 2019.




The Signal Cypher is an analog synthesizer for bass or guitar. Create a variety of synthesized tones by mixing your clean guitar with fast-tracking square wave and sub octave signals. The square wave and sub octave signals are generated using circuitry based on the Broughton Synth Voice, a powerful design that tracks even the deepest of bass guitar notes, providing deep lows and harmonically rich overtones.


The clean and synth signals are then sent to the auto filter. Tune the sensitivity of the filter with the Sense knob, and set the frequency range of the sweep with the Freq knob. The Res knob increases the resonance of the filter, going from muted to quacky filter effects. And finally, the response time of the filter behavior can be set with the Attack and Decay knobs.


The Signal Cypher requires a regulated DC power supply. The voltage must be no less than 9 volts and no greater than 18 volts. The supply must be rated for at least 150 mA. The supply must use a 2.1mm barrel connector with center-negative polarity. You should choose a supply that is intended to be used for musical devices to ensure it will be low noise. There is no difference in performance when using 18V compared to 9V.

The Signal Cypher uses a soft touch stomp switch to actuate a relay, providing true bypass operation.

Dimensions: 4.77" long x 3.6" wide


Signal Cypher

Out of Stock
  • All orders will be shipped via Canada Post. Shipping is a flat rate no matter how many pedals you purchase. Your shipping cost will appear at check-out.

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