Detail 01
Analog fuzz and DSP pitch shifting
The fuzz section is analog, while pitch shifting is DSP-based.
Product detailSKU #1500000415351
KeeleyOcta Psi Transfigurating Fuzz Effects Pedal Black
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1/3
Independent shopping perspective
The Korena take
Octa Psi combines analog fuzz and distortion with DSP polyphonic pitch shifting and octave generation in one pedal. Its controls support quick changes to effect order, all-wet operation, and selectable true or silent buffered bypass, so it can be configured around the role each effect plays in a signal chain. A TRS expression connection handles pitch-bend control, while a separate remote connection can address fuzz and octave functions. It runs from 9–18 VDC, drawing 150 mA, with no battery option.
Strong match
Who this is for
- Pedalboard setups needing fuzz, octave, and polyphonic pitch shifting from one compact enclosure.
- Live transitions that benefit from changing effect order or selecting all-wet operation.
- Expression-controlled pitch bends through a compatible TRS expression pedal.
Consider the trade-offs
When to look elsewhere
- Battery-powered setups, because this pedal has no battery operation.
- Power supplies unable to provide 9–18 VDC and 150 mA.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
True bypass or silent buffered bypass
You can select either bypass mode.
Detail 03
1/4-inch TRS expression input
Connect a TRS expression pedal to control pitch-bending parameters.
Detail 04
1/4-inch remote connection: tip=fuzz, ring=octave
The remote jack separates control of the fuzz and octave functions.
Final check
Know before you order
- 01A high-current 9–18 VDC, 150 mA power supply is required and is sold separately.
- 02Use a TRS expression pedal for expression-based pitch-bend control.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Does Octa Psi run on a battery?
No. It requires 9–18 VDC at 150 mA.
02Can I choose the bypass mode?
Yes. True bypass and silent buffered bypass are user-selectable.
03Can an expression pedal control pitch bending?
Yes. Connect a TRS expression pedal to the expression input.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsSound
- Effects
- Polyphonic Pitch Shifter, Octave, Fuzz, Distortion
1 detailsPickups & controls
- Other I O Control
- 1x 1/4 inch TRS-Expression, TS-Effect Order
1 detailsBody & build
- Color
- Black
2 detailsConnections & power
- Inputs Outputs
- TS ¼” jacks
- Power Requirements
- 9-18 VDC, 150mA (high current power supply sold separately) - no battery
3 detailsSize & weight
- Length
- 5”
- Width
- 3.9”
- Height
- 2.7”
4 detailsOther
- Pedal Type
- Octave Fuzz and Pitch Shifter
- Bypass
- True Bypass or Silent Buffered Bypass, user selectable
- Analog Digital
- Mixed, Analog Fuzz & DSP Pitch Shifting
- Other I O Remote
- 1x 1/4 inch TRS-Tip=Fuzz, Ring=Octave
