User manual for the Electro-Harmonix Bad Stone, a six-stage phase shifter with true bypass, controls, power info, and warranty details.
The Bad Stone is a modern reissue of the classic Electro-Harmonix phase shifter pedal, now in a nano package. It features six stages, variable rate, feedback, and manual shift controls for creating phase effects. The manual covers controls, power options (9V battery or AC adapter), battery replacement, warranty, and FCC compliance. It also includes instructions for returning defective units and contact info for customer service.
| Modulation Speed Range | 0.05Hz to 32Hz |
|---|---|
| Input Impedance | 95kΩ |
| Output Impedance | 4.7kΩ |
| Current Draw | 18mA at 9VDC |
The Bad Stone operates with a standard 9V battery or an optional 9VDC AC Adaptor capable of delivering at least 25mA.
Remove the 4 screws on the bottom, take off the bottom plate, and replace the battery. Do not touch the circuit board.
Electro-Harmonix provides a one-year warranty from the date of purchase for defects in materials or workmanship.