Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated .

Sweetwater
4.5 (12)
$249.00 $236.55 $12.45
Guitar Center
4.0 (4)
$249.00
Amazon
4.4 (19)
$236.55 New
$209.99 Used (Like New)
Reverb
5.0 (11)
$236.55 New
$170.00 Used
Thomann
4.6 (7)
$290.00 $269.00 $21.00 · All time low
Gear4Music
£265.00

Average Price: $237

Standard/Professional

$150

$601+

Price Tier

Budget

Standard

High-end

Price History

Based on price data from 5 merchants for "Keeley Octa Psi Transfigurating Fuzz". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Unleash your creative potential with the Keeley Octa Psi Transfigurating Fuzz Pedal, a versatile powerhouse that combines polyphonic pitch shifting and all-transistor analog fuzz into one sleek unit. This pedal isn't just about adding effects; it's about reshaping your soundscape. Whether you're laying down a classic rock riff or diving into experimental soundscapes, the Octa Psi provides the tools to craft your unique tone.

The pedal's polyphonic pitch shifter offers a broad range of sonic textures, from simple harmonies to complex chordal structures, all while maintaining impeccable tracking speed. The three-way bass response switch—Scoop, Punch, or Psi—allows you to tailor the fuzz's character to suit your musical style, while the true-bypass function ensures your tone remains pristine when the pedal is disengaged.

What sets the Octa Psi apart is its dynamic flexibility. Switch the order of effects on-the-fly, choose between all-wet or wet/dry modes, and utilize the expression pedal input for real-time pitch manipulation. The rugged aluminum enclosure ensures durability, making it as gig-ready as it is studio-friendly. Dive-bomb, harmonize, or transcend traditional fuzz boundaries with this quintessential pedal by Keeley Electronics.

Key Features:

  • Combines fuzz, polyphonic pitch shifting, and octave effects
  • All-transistor analog fuzz with a three-way bass response switch
  • Polyphonic pitch shifter with up, down, and dual modes
  • Expression pedal input for pitch bending
  • Switchable true-bypass or silent buffered-bypass modes
  • Double tap blend control for effect-order change
  • Rugged aluminum enclosure, ideal for live and studio use

Product specs

Pedal Type Octave Fuzz
Analog/Digital Analog (fuzz), Digital (octave)
Inputs 1 x 1/4"
Outputs 1 x 1/4"
Other I/O 2 x 1/4" TRS (Remote, Control)
Bypass Switching True Bypass, Silent Buffered Bypass
EQ Tone Control, 3-way Bass Response switch
Controls Fuzz, Level, Blend, Pitch, 3-way Pitch Mode switch
Power Source 9-18V DC 150mA power supply (sold separately)
Height 2.7"
Width 3.9"
Depth 5"

FAQs

What unique features does the Keeley Octa Psi Transfigurating Fuzz Pedal offer?

The Keeley Octa Psi combines analog fuzz with digital octave effects, featuring a 3-way Pitch Mode switch for versatile sound shaping. It also includes a 3-way Bass Response switch, allowing for tailored low-end control, making it ideal for varied musical styles.

Can the Keeley Octa Psi Fuzz Pedal be used with a bass guitar?

Yes, the Keeley Octa Psi is suitable for bass guitars, thanks to its 3-way Bass Response switch, which allows you to adjust the low-end frequencies for optimal performance with bass instruments.

What type of power supply does the Keeley Octa Psi Fuzz Pedal require?

The Keeley Octa Psi requires a 9-18V DC power supply with at least 150mA current. The power supply is sold separately.

How does the Keeley Octa Psi handle bypass switching?

The Keeley Octa Psi features both True Bypass and Silent Buffered Bypass switching, ensuring signal integrity and flexibility in different pedalboard setups.

Does the Keeley Octa Psi Fuzz Pedal allow for remote control?

Yes, the Keeley Octa Psi includes 2 x 1/4" TRS jacks for remote and control options, enabling external control over its functions for enhanced live performance capabilities.

Reverb

Reverb

Keeley's Octa Psi Is a Pitch-Shifting, Octave-Generating Analog Fuzz | Tone Report Demo

Video thumbnail for Keeley's Octa Psi Is a Pitch-Shifting, Octave-Generating Analog Fuzz | Tone Report Demo by Reverb

Keeley's Octa Psi Is a Pitch-Shifting, Octave-Generating Analog Fuzz | Tone Report Demo

Reverb

Reverb

Video thumbnail for KEELEY OCTA PSI by Mike Hermans

KEELEY OCTA PSI

Mike Hermans

Mike Hermans

Video thumbnail for Keeley Electronics - Octa Psi Transfigurating Fuzz - Sarah Lipstate Performance by Keeley Electronics

Keeley Electronics - Octa Psi Transfigurating Fuzz - Sarah Lipstate Performance

Keeley Electronics

Keeley Electronics

Video thumbnail for Keeley Octa Psi Transfigurating Fuzz Pedal Demo with Robert Keeley by Sweetwater Soundcheck

Keeley Octa Psi Transfigurating Fuzz Pedal Demo with Robert Keeley

Sweetwater Soundcheck

Sweetwater Soundcheck

Video thumbnail for Keeley Octa Psi Fuzz & Polyphonic Pitch-Shifter Demo with John Bohlinger | First Look by Premier Guitar

Keeley Octa Psi Fuzz & Polyphonic Pitch-Shifter Demo with John Bohlinger | First Look

Premier Guitar

Premier Guitar

Video thumbnail for Keeley: OCTA PSI. Jam-Only Demo by Brett Kingman

Keeley: OCTA PSI. Jam-Only Demo

Brett Kingman

Brett Kingman

Video thumbnail for Keeley Electronics Octa Psi Transfigurating Fuzz Octave PItch by Pedal of the Day

Keeley Electronics Octa Psi Transfigurating Fuzz Octave PItch

Pedal of the Day

Pedal of the Day

Video thumbnail for Keeley Octa Psi Fuzz // FIRST SOUNDS // NO TALKING by THE PEDAL COLLABORATIVE

Keeley Octa Psi Fuzz // FIRST SOUNDS // NO TALKING

THE PEDAL COLLABORATIVE

THE PEDAL COLLABORATIVE

Video thumbnail for Keeley Electronics Octa Psi Transfigurating Fuzz - Pedal Empire by Pedal Empire

Keeley Electronics Octa Psi Transfigurating Fuzz - Pedal Empire

Pedal Empire

Pedal Empire

Reviews

PROS

  • Thick, punchy fuzz with multiple voicing options

  • Octave effect can be used independently of the fuzz

  • Secondary set of interval voicings for added versatility

  • Ability to switch order of fuzz and octave effects

  • Tracks well, even during live performances

  • Solid build quality with well-placed footswitches

  • Great for emulating styles of two-man bands

  • Offers creative sound possibilities with blendable voicings

  • Easy to use despite complex features

  • Potential future classic, highly recommended by users

CONS

  • Fuzz can be noisy when level knob is set high

  • Some users find the sound reminiscent of 80s video games

  • Requires a separate power supply not included

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Keeley Octa Psi Transfigurating Fuzz.

Comparisons

  • The Keeley Octa Psi is reported to track faster than the MXR poly blue, offering a more responsive performance.

    Source
  • The Octa Psi is compared to EHX Pitchfork for its lack of metallic overtones and superior integration of fuzz and octave effects.

    Source

Use cases and applications

  • The pedal is reportedly effective after delay pedals like the Dispatch Master, maintaining sound quality and offering unique tonal possibilities post-delay.

    Source
  • The chorus effect combined with reverb can produce lush, expansive sounds, encouraging users to remove separate chorus pedals from their boards.

    Source
  • Users report using the pedal to achieve bass guitar tones by setting the pitch knob fully wet and down, demonstrating its versatility beyond typical fuzz applications.

    Source
  • When paired with a Klone, the Keeley Octa Psi delivers a notably enhanced sound, suggesting effective stacking with various pedals.

    Source
  • Users appreciate the pedal's ability to save board space by combining functions typically requiring two pedals.

    Source

User experience

  • The pedal's octave tracking is praised for its precision and zero detectable latency, offering a reliable performance in live and studio settings.

    Source
  • The pedal is said to fill a niche between practical and experimental setups, fitting well with both traditional and ambient glitch effect boards.

    Source
  • One owner reports that the chorus function and pitch shift exceeded expectations, enhancing the fuzz effects.

    Source

Setup and maintenance

  • It's noted that the pedal requires 150mA power and can benefit from 18V for increased headroom, which could reduce noise issues in certain setups.

    Source

Features and functionality

  • A tri-voicing toggle on the fuzz side enhances versatility, reminiscent of the Moon op amp fuzz, allowing for diverse sound shaping.

    Source
  • Owners highlight the ability to change effect order between fuzz and octave on the fly, a feature often missing in separate pedals.

    Source
  • Owners appreciate the Muff-inspired fuzz with added op-amps, making it a distinct entity from traditional Muff pedals, reminiscent of a Moon fuzz minus the excessive bass.

    Source
  • The pedal includes a harmonizer capable of down tuning, octave adjustments, and a doubler chorus, offering a versatile range of effects.

    Source

Build quality

  • Owners praise the pedal's stiff, weighted metal knobs and solid construction, likening its feel to high-end brands like Strymon and Eventide.

    Source
  • The blend knob has been noted to wobble slightly, whereas other knobs feel very solid and secure.

    Source

Other

  • The pedal's design allows for seamless integration with other pedals, maintaining sound quality and functionality when stacked.

    Source

Value and pricing

  • The introductory price is reportedly $250, offering more functionality than similarly priced models like the POG Mini or Whammy Ricochet.

    Source

Critic Reviews

Keeley Octa Psi Guitar Pedal Review - Premier Guitar

premierguitar.com

The Keeley Octa Psi delivers a wild ride through fuzz and octave textures, offering an expansive tonal palette that ranges from delightfully grotesque to brilliantly melodic. Its intuitive controls allow for a surprisingly musical experience, though the complexity can lead to confusion without proper exploration. While it tracks pitch shifts well and can produce unique sounds, navigating its advanced settings might feel overwhelming at first. Overall, the Octa Psi is a versatile addition to any pedalboard, capable of producing both traditional and avant-garde sounds, making it a worthy investment for adventurous musicians.

positive

Keeley Electronics Octa Psi Transfigurating Fuzz Review

russomusic.com

The Keeley Octa Psi Transfigurating Fuzz is a captivating blend of fuzz and octave effects, showcasing impressive versatility with responsive controls that encourage creativity. The analog fuzz delivers a robust Muff-style tone, while the octave effects provide an array of options for sonic exploration. Its compact design packs a punch, making it ideal for both stage and studio use. However, some users may find the multitude of settings overwhelming, and while the pedal excels in tone shaping, it might not cater to every player's taste. Overall, it’s a must-try for those seeking to elevate their sound, but be prepared to spend time navigating its extensive features.

positive

5.0 out of 5

Based on 0 Reviews and 1 Rating

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Artist usage

Add artist
See how Andy Timmons uses Keeley Octa Psi Transfigurating Fuzz

Andy Timmons

Guitarist

Danger Danger

...
Verified via YouTube

In a YouTube video by youngguitarmagazine Andy Timmons shows the Keeley Octa Psi Transfigurating Fuzz Pedal and explains its use.

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use Keeley Octa Psi Transfigurating Fuzz, it is most commonly used with the following gear.

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Community setups

Show yours
sprucebringsteen

sprucebringsteen

Gear IQ 28717

sprucebringsteen

sprucebringsteen

Gear IQ 28717

sprucebringsteen

sprucebringsteen

Gear IQ 28717

sprucebringsteen

sprucebringsteen

Gear IQ 28717

sprucebringsteen

sprucebringsteen

Gear IQ 28717

3 alternative and related items for Keeley Octa Psi Transfigurating Fuzz, curated by the Equipboard community.

DigiTech Whammy Pitch-Shifting Pedal

$185.05 - $319.99

similar sound high-end alternative

Using its pitch shifter function, the Octa Psi can reproduce Whammy tones and more, making it a suitable alternative.

Keeley Moon Op Amp Fuzz

$139.00 - $159.00

similar sound cheaper alternative

The Octa Psi's fuzz is derived from the Moon circuit, retaining similar mid and scoop controls.

Keeley Octa Psi Transfigurating Fuzz XXIV Anniversary 'Taiga Mod'
mod limited edition

The 'Taiga Mod' features a less aggressive fuzz section, inspired by the Green Russian Big Muff, but leaves the octave/pitch shifter section unchanged.

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