Keeley Electronics Octa Psi Transfigurating Fuzz Effect Pedal

The Keeley Electronics Octa Psi Transfigurating Fuzz is a mysterious, black box of outrageous sound and deep functionality. Straight from the masterminds at Keeley, this pitch-black tablet of tone delivers on many fronts for a versatile and musical fuzz and pitch effect combo for anyone to really sink their teeth into.

Pitch-altering fuzz is the name of the game for the Octa Psi. Those seeking a powerful pitch-shifter, octave generator or analog fuzz need look no further as this pedal is all of those things at once. Across its intuitive interface, one will find separate sections for the octave/pitch and fuzz effects to quickly punch into the fun. Independent footswitching unlocks great interactivity between the split sides along with expression pedal connectivity built in but let’s not get ahead of ourselves.

The Octa Psi’s Transfigurating Fuzz circuit is an all-analog, transistor-based drive with extensive gain stages. These stages climb all the way up to a hard-clipping fuzz when cranking up on the Fuzz effect control and are adjustable via a quick turn of the Tone control. A three-way tone switch unlocks more choice in the Octa Psi’s fuzzy voice with options between Scoop, Punch, or Psi modes to dial in a fuzz to fit any occasion. Bringing on all the thunderous roars one would expect from a fuzz like this, Octa Psi’s distorted voice is both charmingly monstrous and adaptable to different rigs and pickup configurations.

On its opposite side, the Octa Psi loads in an octave effect accessible via its dedicated footswitch, eight-way toggle, and three-way mode switch. Between these two functions, the Polyphonic Octave and Pitch Shifter effect comes alive to play seamlessly with many different types of playing. The Octa Psi’s Up, Down, and Dual modes create nearly every harmonic interval to play with power chords, stacked fourths, and diminished chords. Polyphonic and ready for action, the octave effects equipped to the Octa Psi keep up with even the most experienced pitch-shifting players.

Functionality on the Octa Psi goes beyond the call of duty with a suite of settings to get into the nitty-gritty of effect customization. A switchable all-wet to wet/dry Blend control can be accessed by tapping the Octave effect Blend control. With this, the octave effects of the Octa Psi can totally take control or play in a more nuanced way with the Blend dial. This control can be used in conjunction with a momentary or latching Octave control by holding down the Fuzz footswitch for deeper playability options. Further, an adjustable ramp speed opens the field for creatively time pitch bending, as if there were an onboard expression pedal. An expression pedal connection does land on the Octa Psi for extended connectivity options and remote effect control.

For fuzz fanatics and pitch-shifters alike, the Keeley Octa Psi goes simply off-the-wall for new, wild effect mixes. Crank it up or roll it back to play how you want and feel the transfiguration take hold!

• Polyphonic pitch shifting with two-octave range
• Momentary and latching pitch-shifting effect
• All-analog, transistor-based fuzz effect
• Three-way fuzz effect mode switch
• Eight-way octave/pitch shifter effect toggle
• Three-way pitch shift effect mode switch
• Two expression pedal connections
• Selectable true or silent buffered bypassing
• 9-18 Volt DC center negative power operation