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Phaser · Past FX

Past FX Gallstone

The Gallstone is a compact analog phaser pedal that draws inspiration from the Small Stone design, offering switchable 2 or 4-stage operation and an 8-way width control for shaping the effect's character.

  • 9V DC · center −
  • 80 mA
  • True bypass
  • Analog
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The rundown

Highlights

  • Analog phaser with 2/4 stage switching
  • 8-way width control for effect customization
  • True bypass in compact 1590B enclosure
  • Runs on 9V DC (80 mA) with battery option
  • Made in Australia

Best for

Guitarists seeking a compact phaser pedal with flexible stage and width controls in a pedalboard-friendly format.

Quick facts

Power
9V DC
Current draw
80 mA
Polarity
Center negative
Bypass
True bypass
Dimensions
59.9 × 100.1 mm
Controls
Mix, Range, Rate, Feedback, Width (8-way), Voice, Stages (2/4), Expand
Status
In production

Where to buy Past FX Gallstone

We have no current prices for this pedal yet.

Frequently asked questions

What power supply does the Gallstone use?

The Gallstone runs on 9V DC with 80 mA current draw and supports battery operation.

What controls does the Gallstone have?

The Gallstone features Mix, Range, Rate, Feedback, Width (8-way), Voice, Stages (2/4), and Expand controls.

Is the Gallstone true bypass?

Yes, the Gallstone is true bypass.

What are the dimensions of the Gallstone?

The Gallstone measures 59.9 x 100.1 mm.

Similar pedals

Same type, similar features.

Specs from pedalfilter. Summary written by PedalBro from those specs and public descriptions.

Page last updated September 29, 2026.