The FTelettronica Sub Octave is a compact effects pedal in the octaver family, part of the wider world of octave and pitch pedals. RockBoard's PedalPedia describes it as a monophonic analog octaver: a pedal that produces a note one or more octaves below the note you play, tracking a single note at a time rather than full chords1.
What it does
As an octaver, the Sub Octave sits in the pitch-shifting family of effects. Where a distortion or fuzz pedal changes the character of your note, an octaver changes its pitch, generating a lower note that follows your playing. FTelettronica's "monophonic" label matters here: the pedal is designed to track one note at a time, so single-note lines and riffs are where it is meant to work, and chord playing is outside its design1.
The "analog" part of the description tells you how it gets there. The circuit type is listed as analog, meaning the sub-octave is generated with analog circuitry rather than digital pitch detection1. Players often reach for analog octavers for the way they sit in a signal chain alongside overdrive and fuzz pedals, and the low parts count of an analog design is one reason this pedal's power draw is so small.
Power and practicalities
The Sub Octave runs on 9V DC with a center negative plug, the same standard used by nearly all modern pedals, and draws just 2.5mA1. That is a very light load: even a modest pedalboard power supply can carry it alongside many other pedals on a shared output.
RockBoard's PedalPedia lists its product page for the Sub Octave at ftelettronica.com, where the maker's own product information is maintained1.
Videos
BassTheWorld.com
FTelettronica Handmade Pedals and the wetter bass
Questions
Is the FTelettronica Sub Octave analog or digital?
It is an analog pedal. FTelettronica lists the circuit type as analog, and describes the Sub Octave as a monophonic analog octaver. That means it generates its sub-octave note with analog circuitry rather than digital pitch tracking, and it is built to work with a single note at a time rather than chords.
How much power does the FTelettronica Sub Octave draw?
The Sub Octave runs on 9V DC with a center negative plug, the standard pedal power arrangement, and draws 2.5mA. That very low current draw means it will run happily from almost any pedalboard power supply without putting a strain on a shared output.
Sources (1)
- Sub Octave by FTelettronica, RockBoard PedalPedia, 2026