Diamond F-Octave Classic Fuzz

Originally launched in 2017, the F-Octave returns with its signature high-gain silicon fuzz—built in tribute to the legendary Foxx Tone Machine. Expect rich harmonic saturation, snarling octave-up tones, and vintage character in spades.

This discrete analog circuit delivers two distinct voices:

• Octave On – cutting, synth-like fuzz with screaming overtones
• Octave Off – thick, warm fuzz with classic feel and sustain

Shape your tone with TONE and LPF controls—dial in bite or smooth things out. The octave effect shines on single notes, double-stops, and chords, adding wild textures and upper harmonics that respond dynamically to your playing. Equally at home on guitar or bass, the F-Octave is your go-to for vintage psych, garage grit, or modern doom tones.