Bad Stone Phase Shifter Phaser

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Professor’s Notes

A classic reborn, the Bad Stone is an all-analog, 6-stage phaser that delivers vintage swirl and stands as a value-oriented alternative to vintage vintage analog phasers such as the Boss MIJ Black Labels. 

Description

The Electro-Harmonix Bad Stone is a faithful reissue of a 1970s classic, updated with modern reliability in a compact, rugged enclosure. Its 6-stage analog circuit produces rich, liquid phasing that ranges from smooth movement to dramatic, spacey textures.

The simple control set — Rate, Feedback, and Manual Shift — makes it quick to dial in inspiring tones. The Manual Shift knob unlocks a unique feature: freezing the sweep for static, vocal-like filter effects that go beyond the range of traditional phasers.

Where Boss MIJ phasers like the PH-1 and PH-1r excel at smooth subtlety, the Bad Stone adds extra versatility and personality, with deeper modulation and more expressive control. As a reissue, it offers the authentic vintage character of the original at a fraction of the price of collectible units, making it a smart choice for players chasing analog phasing without vintage hassles.

Specifications

• Type: 6-stage analog phaser (reissue of the 1970s original)
• Controls: Rate, Feedback, Manual Shift
• Unique Feature: Manual Shift knob for frozen/static filter tones
• Bypass: True Bypass
• Audio: Mono input/output
• Power: 9V battery included or optional 9VDC adapter (not included)
• Current Draw: ~20mA
• Dimensions: 4.75" x 4" x 2.25"
• Positioning: Classic reissue, all-analog, value alternative to vintage Boss MIJ phasers (PH-1, PH-1r, PH-2)

What’s Included

• EHX Bad Stone Phaser pedal
• 9V battery (installed)
• Original packaging