Dual-channel envelope filter/wah and octave for funk and soul with two filter modes and expression input.

Unique fuzz with otherworldly voicing and expressive dynamics.

Ampeg-style monophonic sub-octave with Direct/Octave blend. Built for bass, works with guitar.

Bass-optimized octave with vintage analog tracking character.

Doom and sludge fuzz from Spain. Massive low-end with switchable octave-up for wall-of-sound destruction.

Bit Commander-inspired octave fuzz with monophonic 8-bit synth sounds. Six knobs for wild tone shaping.

DIY PCB for building a fOXX Tone Machine clone - the 1971 octave fuzz with phase splitter and complementary rectifier.

Octave-up fuzz with vintage-style circuit. Retro fuzz tones with an octave harmonic riding on top.

Ram's Head Muff meets Super Fuzz — octave-up blend and adjustable gate for sludgy, cutting fuzz tones.

Upper octave fuzz with variable timbre and filter. From subtle enhancement to doom-hammer saturation.

Compact harmonic generator adding octave-up overtones in mini format, perfect for tight pedalboards.

Ripping octave-up fuzz that cleans up to a ring mod shimmer. One knob, two modes via toggle.

Polyphonic octaver adding lush harmonies to your playing. Tracks chords cleanly for organ-like swells and pads.

Triple-octave fuzz generating +1, -1, and -2 octaves simultaneously. All-discrete circuit, no ICs.

Latest POG with expanded voices and effects. DSP-powered polyphonic processing.

Dual-channel fuzz and octave based on Jordan Boss Tone circuit with silicon transistors.

The original octave fuzz used on Purple Haze and Fire. Designed by Roger Mayer in 1967 for Jimi Hendrix.

Versatile high-gain octave fuzz with selectable clipping modes for tones from warm fuzz to top-end rich with natural upper octave.

The bass player's secret weapon - thick analog octave-down that tracks like a dream.

Faithful Maestro Brassmaster clone with original transistors and transformer specs.

Analog sub-octave with Oct 1 (1 down), Oct 2 (2 down), and Direct Level controls. OC-2-style circuit in mini format.

Analog octave or synth pedal from DSM Humboldts effects lineup.

Polyphonic octave up and down in compact nano enclosure, tracking every note in chords flawlessly.

Polyphonic octave with independent ±1 and ±2 octave controls plus dry blend. 7 preset slots, no tracking glitches.