Donner Harmonic Square Pitch Shifter Octave Pedal

The Donner Harmonic Square Pitch Shifter & Octave Pedal opens up a whole new world of creative possibilities, transforming your guitar into everything from a thunderous octave machine to a shimmering detuned chorus-like texture. Compact, versatile, and remarkably easy to use, it's the perfect pedal for players who love experimenting with new sounds without filling their pedalboard with multiple effects. At the heart of the Harmonic Square are seven different pitch-shifting intervals combined with three distinct tone modes, giving you an impressive 21 different sound combinations. Whether you're adding massive octave-down riffs, soaring octave-up lead lines, subtle harmonies, or gently detuned textures that thicken your sound, there's plenty to explore.

The three operating modes make the pedal exceptionally flexible. Sharp mode shifts your signal upwards for bright octave and harmony effects, Flat mode drops the pitch to create deep, powerful bass-style tones and lower harmonies, while Detune mode offsets the pitch by up to 10 cents, adding width and movement that's perfect for creating rich, chorus-like textures without the modulation of a traditional chorus pedal. Independent Wet and Dry controls give you complete command over the mix. Blend in just a touch of shifted signal to add depth and dimension, or turn up the Wet control for bold, dramatic pitch effects while balancing your original guitar tone exactly as you like it. This flexibility makes the Harmonic Square equally effective for subtle enhancement and full-on sonic experimentation.

Built around a digital processing engine, the Harmonic Square delivers accurate tracking and consistent performance while true bypass switching preserves your original tone whenever the pedal is disengaged. A durable aluminium-alloy enclosure ensures it's ready for rehearsals, gigs, and life on a busy pedalboard, while the LED status indicator provides clear visibility on stage. Whether you're playing ambient soundscapes, modern worship, progressive rock, metal, indie, blues, or simply looking to make a solo guitar sound much bigger, the Harmonic Square offers an inspiring range of creative possibilities in one compact pedal.

At Musicmaker, we're always fond of pedals that encourage players to experiment, and the Harmonic Square is one of those effects that can take a familiar riff somewhere completely unexpected.

Features

• Donner Harmonic Square Pitch Shifter & Octave Pedal

• Seven pitch-shifting intervals

• Three tone modes: Sharp, Flat, and Detune

• 21 tonal combinations

• Sharp mode for pitch-up harmonies

• Flat mode for pitch-down and octave effects

• Detune mode with adjustable ±10 cent pitch shift

• Independent Wet and Dry level controls

• Accurate digital pitch processing

• True bypass switching

• Durable aluminium-alloy enclosure

• LED status indicator

• Compact pedalboard-friendly design