Keeley Octa Psi Transfigurating Fuzz Pedal

All-Analog Fuzz Meets Advanced Polyphonic Pitch Shifting

The Keeley Octa Psi Transfigurating Fuzz is a powerful, dual-engine stompbox that bridges the gap between raw vintage analog fuzz dynamics and modern digital polyphonic pitch transposition. Designed and built in Oklahoma City by Robert Keeley and his master engineering team, the Octa Psi combines an explosive, wide-range transistor fuzz circuit with a ultra-fast, low-latency pitch engine capable of shifting your tone up or down by multiple octaves, drop-tunings, and wild whammy-style pitch bends.

Built for total sonic transformation, the Octa Psi features independent signal paths for fuzz and pitch modulation. You can run the analog fuzz into the pitch engine for massive, tracking-accurate synthesist textures, or place pitch shifting before the fuzz to smash polyphonic chords into thick, harmonic fuzz saturation. With dedicated Blend, Tone, Fuzz, and Pitch interval controls, it easily spans subtle sub-octave fattening, classic octave-up lead screamers, aggressive bass drops, and full-on sonic chaos.

Housed in a road-ready chassis with Keeley's soft-touch dual footswitches (supporting both latching operation and momentary pitch bends), true bypass switching, and top-mounted jacks, the Octa Psi is an essential tone-shaping tool for ambient soundscapers, heavy riffers, and experimental guitarists alike.

Key Specifications & Technical Features:

• Effect Type: Polyphonic Pitch Shifter & All-Analog Fuzz Engine
• Pitch Intervals: Selectable Octave Up, Octave Down, Dual Octave, Drop Tuning, & Pitch Transposition Intervals
• Routing Flexibility: Selectable Signal Order (Fuzz > Pitch or Pitch > Fuzz) with Independent Blend Controls
• Footswitch Operation: Dual Soft-Touch Switching (Latching On/Off and Momentary Pitch Bending)
• Bypass: True Bypass Switching with Low-Noise Buffer Options
• Jacks: Top-Mounted Input, Output, and Power Jacks for pedalboard space saving
• Power Requirements: 9VDC Center-Negative (Standard Power Supply, ~150mA Draw)
• Origin: Hand-Crafted in Oklahoma City, Oklahoma, USA