Electro-Harmonix Bad Stone Analog Phase Shifter

The Electro‑Harmonix Bad Stone Phase Shifter brings back one of the most distinctive and sought‑after modulation effects of the 1970s—faithfully resurrected with modern reliability. As vintage Bad Stone pedals continue to climb in price, this reissue delivers the original circuit design and three‑knob control layout, enhanced with updates that make it better suited for today’s players and pedalboards.

The Bad Stone was the first phase shifter to employ variable feedback, and it remains one of the most expressive phasers ever created. Featuring six stages of phase shifting, it produces rich, swirling textures that range from slow, spacious sweeps to fast, oscillating warble. A standout feature is Manual Shift mode, which allows players to freeze the phase at a fixed point—creating a unique, “cocked‑wah” style tone that adds a powerful, vocal quality to riffs and leads.

Housed in a compact, rugged die‑cast enclosure, the Bad Stone is built for the road and includes true bypass switching to preserve signal integrity. Whether you’re chasing classic psychedelic tones, funk textures, or experimental modulation, the Bad Stone delivers unmistakable character with simple, hands‑on control.

Key Features

• Faithful reincarnation of the legendary 1970s Bad Stone
• Six stages of phase shifting with variable feedback
• Manual Shift mode for frozen phase and “cocked‑wah” effects
• Rate control from slow sweep to rapid modulation
• Compact, road‑ready die‑cast enclosure
• True bypass switching for clean signal path
• Effect status LED
• 9V battery included