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Phaser · PastFX

PastFX Classic Phase PX99

The PastFX Classic Phase PX99 is an analog phaser that recreates the Ibanez PH99 with switchable 4 and 6-stage OTA phasing. It offers extensive control over the effect including speed, depth, feedback, bias, and Q-factor.

  • 9V DC · center −
  • 40 mA
  • True bypass
  • Analog
New
from $219.27
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The rundown

Highlights

  • Switchable between 4 and 6-stage phasing modes
  • Variable bias control and Q-factor focus for tone shaping
  • True bypass with 9V DC power (40 mA)
  • Compact size at 59.9 x 112 mm
  • Made in Australia

Best for

Guitarists seeking a compact phaser with extensive control over phasing characteristics and the ability to switch between different stage configurations.

Quick facts

Power
9V DC
Current draw
40 mA
Polarity
Center negative
Bypass
True bypass
Dimensions
59.9 × 112 mm
Controls
Speed, Depth, Feedback, Level, Bias, Stages (4/6), Waveform (Square/Sine), Q
Status
In production

Where to buy PastFX Classic Phase PX99

$219.27 lowest new price · Reverb

Current offers
SellerConditionPriceLink
ReverbNew$219.27View

Prices last checked under an hour ago. Links to sellers are affiliate links.

Frequently asked questions

What power does the PastFX Classic Phase PX99 require?

The PastFX Classic Phase PX99 runs on 9V DC at 40 mA, center-negative.

Does the PastFX Classic Phase PX99 have true bypass?

Yes, the PastFX Classic Phase PX99 features true bypass.

Can you switch between different phasing modes on the PastFX Classic Phase PX99?

The PastFX Classic Phase PX99 includes a Stages switch that lets you select between 4 and 6-stage phasing.

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

Page last updated September 29, 2026.