The ultimate combination of Pitch-Shifter, Octave Generator, and analog Fuzz!
Imagine having your favorite pitch-shifter, octave generator, and analog fuzz all in one pedal.
A dual effect designed to inspire musical adventuring—that’s what the Keeley Octa Psi Transfigurating Fuzz is all about!
This all-analog fuzz and distortion pedal features a powerful transistor design that makes any guitar or bass pickup sound massive.
The fast-tracking polyphonic pitch-shifter offers a symphony of sounds to explore. Drop tuning, unique pitch-shifting combinations, and even chorus-inspired textures—this pedal goes far beyond standard fuzz or octave effects.
The Octa Psi allows you to switch the effects order on the fly, engage an all-wet mode, and toggle between True Bypass and Buffered Bypass. You can even plug in an expression pedal to take full control of pitch bending and unleash dive-bombs with precision.
Prepare yourself to experience the ultimate in pitch-shifting, octave generation, and analog fuzz!
Keeley Octa Psi Transfigurating Fuzz Features:
• Polyphonic pitch shifter with three modes: Up, Down, and Dual.
• All-analog, transistor-based fuzz with three-way tone shaping (Scoop, Punch, Psi).
• Switchable effect order: Fuzz into Pitch or Pitch into Fuzz.
• Momentary or latching octave shifting for dive-bombs and wild bends.
• Adjustable ramp speed for pitch bending effects.
• Switchable True Bypass or Silent Buffered Bypass.
• Remote switching and TRS expression pedal compatibility.
• Power: 9-18V DC.
• Current Draw: 150mA.
• Dimensions: 2.7" x 3.9" x 5.0".
Specs
Type | Fuzz |
Condition | New |
Power | 9-18V DC |
Current Draw | 150mA |
Power supply included | No |
Country of Origin | United States |

FREE SHIPPING
- Free shipping within Canada.
- Free shipping to the USA.
- Free shipping on international orders over 520$.
Visit the Shipping page for more.

Fast Delivery
- Canada : 1 - 2 business days
- USA : 1 - 2 business days
- Rest of the world: 3 - 5 business days.

Hassle-Free Returns
You have 45 days to test your new gear. If you choose to return it, we’ll send a full refund. It’s that simple: no bogus restocking fees or charges.
Visit the Returns page for more.
Frequently Asked Questions
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How can I tell if an item is in stock? +
Each product page shows an availability status.
• In stock items are ready to ship.
• Out of stock items are currently unavailable.
You can enter your email to be notified when an item is back in stock.
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Where are you located? +
We’re based in Blainville, Quebec, Canada.
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When will my order ship? +
Orders placed before 12 PM EST ship the same business day.
Tracking details are sent shortly after purchase.
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How much does shipping cost? +
Most orders ship free to Canada and the US.
International orders ship free on purchases over $520 CAD.
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Which shipping methods do you use? +
Orders ship via UPS Expedited by default.
For faster delivery, you can select UPS Express Saver at checkout.
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How long does shipping take? +
Typical delivery times are:
• Canada: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• USA: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• International: 3–5 business days with UPS Expedited, 2–3 business days with UPS Express Saver
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Which payment methods do you accept? +
We accept all major credit cards and PayPal.
Financing options are available through Klarna and RBC PayPlan.
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Do Canadian customers pay sales tax? +
Yes. Sales tax is applied based on your province of residence:
• Alberta: 5%
• British Columbia: 5%
• Manitoba: 5%
• New Brunswick: 15%
• Newfoundland and Labrador: 15%
• Northwest Territories: 5%
• Nova Scotia: 14%
• Nunavut: 5%
• Ontario: 13%
• Prince Edward Island: 15%
• Quebec: 14.975%
• Saskatchewan: 5%
• Yukon: 5%
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Do USA customers pay import fees? +
Yes. Starting August 29, 2025, all US-bound shipments will be subject to duties, taxes, and brokerage fees.
These charges are determined by US Customs and collected by UPS at delivery.
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Do international customers pay import fees? +
Yes. International shipments may be subject to duties and taxes.
These charges are set by the destination country’s customs authority and collected by UPS at delivery.