Full [top]tone Ultimate Octave Schematic Jun 2026

: You will need a 3PDT footswitch for True Bypass and another for the Octave on/off function. The Fat/Bright Modification

The circuit is primarily an analog monophonic octave-up generator paired with a heavy distortion stage.

The Fulltone Ultimate Octave is a legendary dual-channel fuzz and octave-up pedal that has carved out a permanent spot on the pedalboards of rock icons like Josh Homme and Joe Perry. While the pedal is no longer in active production by Fulltone, its circuit remains one of the most sought-after designs for DIY builders and electronics enthusiasts. fulltone ultimate octave schematic

Many “Ultimate Octave” clones are essentially modified Foxx Tone Machine circuits with a transformer added.

If you want a to study, look for:

: The original units often used 2N3904 or BC549 silicon transistors. High-gain NPN transistors are essential for that signature sustain.

As with all pitch effects, position octave pedals as close to the start of a pedal chain as possible. Only compressors and some fu... BOSS Articles Ultimate Guide to Octave & Pitch-Shift Pedals - Andertons The order of pedals in your chain has a massive effect on your tone. Octave and pitch effects are most commonly placed at the fron... Andertons Music Co. Fulltone Ultimate Octave Clone - Guitar FX Layouts - Nabble 4 Mar 2015 — : You will need a 3PDT footswitch for

If you are planning a DIY build or a repair, pay close attention to these parts:

The schematic can be broken down into four distinct stages: While the pedal is no longer in active