Keeley Electronics OCTA PSI Transfigurating Fuzz

Retailing in the region of £265.00

On the menu for January 2026 are the Keeley Electronics Guitar Pedals, freshly added and carefully selected. These New units are available to order online with fast, secure delivery from trusted UK retailers. Read on for full details, specifications, demos, videos, reviews, and the best places to buy the Keeley Electronics Guitar Pedals today.


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Description

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On the menu for January 2026 are the Keeley Electronics Guitar Pedals, freshly added and carefully selected. These New units are available to order online with fast, secure delivery from trusted UK retailers. Read on for full details, specifications, demos, videos, reviews, and the best places to buy the Keeley Electronics Guitar Pedals today.

Here’s what Keeley Electronics say about the Octa Psi Pitch Shifter and Octave Fuzz Pedal:

“Introducing the Octa Psi Transfigurating Fuzz Pedal, the ultimate combination of polyphonic Pitch-Shifter, Octave Generator and Analog Fuzz! Imagine merging a powerful pitch-shifter, octave generator, and analog fuzz into one intuitive pedal. With the new Octa Psi, we’ve made that dream a reality! Octave/Pitch before or after fuzz? Well, now you can experience the best of both worlds, simply by holding down both foot switches on the Octa Psi at the same time to switch the effect order. For even more control, a quick double-tap of the Blend switch allows you to seamlessly toggle between an All-Wet effect or a Wet/Dry blend, while with a simple press and hold of the Fuzz switch, you can seamlessly shift between momentary and latching octave modes, giving you immense additional options to tailor your sound.”

Key Features

  • Octave Fuzz and Polyphonic Pitch Shifter Pedal
  • Extensive on-board control options for maximum flexibility
  • Momentary or Latching Pitch Shifter
  • Analogue Fuzz & Digital Pitch Shifting
  • True Bypass or Silent Buffered Bypass, user selectable
  • Top-mounted jacks for easy pedalboard mounting
  • Made in Oklahoma, USA
  • Powered by 9-18 V DC PSU (not supplied – requires centre – 2.1 mm, 150 mA current draw)

The polyphonic octave and pitch shifter features three distinct modes: Up, Down and Dual. These unlock an array of possible harmonic intervals ranging from power chords to stacked fourths and even diminished chords across a +/- two octave range. Momentary mode is perfect for wild dive-bombs and multi-octave bends, while an adjustable ramp speed adds creative flair by letting you control pitch bending just as if you had an in-built expression pedal on board. With its all-analog, transistor-based fuzz circuit, Octa Psi brings wave after wave of gain staging, making your pickups sound enormous and leading to full on hard clipping and immense tones on tap. With the three-way tone switch, you can easily dial in your desired fuzz tone by switching between the Scoop, Punch, or Psi bass response modes. Octa Psi is not only powerful, but also it is beautifully designed for simplicity and durability. Its high-octane circuitry is housed in a proprietary angled aluminium enclosure, combining stunning looks with rugged functionality.

Additional information

Weight 0.5 kg

Brand

Keeley Electronics

Keeley Electronics is a prominent American manufacturer of guitar effects pedals, founded in 2001 by Robert Keeley. The company has established a strong reputation in the boutique pedal industry through its focus on precision engineering and high-quality audio performance.

Keeley is renowned for its active and passive pedal designs, including iconic models like the Katana Blues Driver, the Compressor Plus, and the Delay Workstation. Keeley’s pedals are distinguished by their meticulous craftsmanship, innovative circuit designs, and reliability.

The company’s products often incorporate advanced features such as flexible EQ controls, analogue and digital hybrid processing, and extensive tone-shaping capabilities, making them favoured by both professional and amateur guitarists seeking exceptional sound quality and versatile performance.

Category

Guitar Pedals

Tags

Expression

Expression pedals allow real-time control over specific parameters on compatible guitar pedals, such as volume, delay time, modulation depth, or filter sweep. Used with an expression input, they let players shape effects dynamically with their foot, adding movement and performance control that cannot be achieved with fixed knob settings.

Fuzz

A fuzz pedal is one of the earliest and most aggressive forms of distortion, turning your clean guitar signal into a thick, saturated wall of sound. It works by clipping the waveform almost flat, creating a compressed, gritty tone full of harmonic overtones. The result is raw, unruly, and unmistakable — from the sputtering breakup of vintage germanium circuits to the searing sustain of modern silicon designs. Fuzz pedals react strongly to your guitar’s volume and pickup choice, making them dynamic tools for expressive players.

Whether you’re chasing the classic tones of Hendrix and the Smashing Pumpkins or exploring heavy, experimental textures, fuzz remains a favourite for its personality and unpredictability. It can sound smooth and sustaining, or wild and velcro-like, depending on how it’s set up. A good fuzz pedal cuts through the mix while adding thickness and attitude, turning any riff or lead line into something bold and unmistakably alive.

New

This is brand new, fresh in, and a UK warranty is included. New Gear always comes from trusted UK music retailers.

Octave

An octave pedal shifts your guitar signal up or down by one or more octaves, blending the altered pitch with your original sound to create a fuller, more complex tone. It can add a deep, bass-like layer underneath your playing or a shimmering high octave on top for lead lines and solos. Classic analogue octave pedals often produce slightly gritty, organic sounds, while modern digital versions track more precisely and can offer multiple octave ranges.

Octave pedals are great for thickening single-note riffs, creating synth-style textures, or even mimicking bass parts when playing alone. They pair well with fuzz or overdrive pedals for massive, harmonically rich tones. Whether you’re after vintage Hendrix-style octave fuzz or a modern polyphonic sound that tracks chords cleanly, an octave pedal opens up a world of creative possibilities and adds real weight and character to your tone.

Pitch

Pitch pedals alter the frequency of your guitar signal, changing the perceived note or adding harmony. They can shift notes up or down by fixed intervals, create harmonies, or produce dive-bomb and whammy-style effects without a tremolo arm. Pitch shifters and harmonisers are great for thickening solos, simulating multiple guitars, or experimenting with creative, otherworldly sounds that expand your tonal range.

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