The ammoon Octa is an octave pedal from Ammoon, a budget guitar effects pedal manufacturer. It is an analog octaver that generates an octave above and an octave below your signal, and RockBoard's PedalPedia describes it as a "precise polyphonic octave stompbox," meaning it is built to track chords as well as single notes1.
RockBoard's PedalPedia says the Octa delivers "super fast tracking and dynamic octave generation" and that it "can make a six-string sound like a 12-string with one stomp"1. That 12-string effect comes from blending the upper octave with your dry signal, the same trick 12-string guitars achieve with doubled strings an octave apart.
The controls: Up, Sub and Dry
The Octa keeps its front panel to three knobs, one per voice in the mix1.
| Control | What it does |
|---|---|
| Up | Sets the output level of the upper octave1 |
| Sub | Sets the output level of the sub octave1 |
| Dry | Sets how much of your dry signal is present in the mix1 |
Because each voice has its own level control, you can run the Octa as a pure octave-up shaper, a sub-octave fattener for bass-heavy parts, or any blend of the three. Rolling the Dry knob down and both octaves up gives the most processed sound; keeping Dry high and adding a touch of Up is the route toward the 12-string impression RockBoard's PedalPedia describes1.
Power
The Octa runs on 9V DC with a center negative plug and draws 150mA1. That draw is worth noting: it is the same figure Keeley Electronics lists for its Octa Psi, a digital polyphonic octaver that takes 9 to 18 VDC and has no battery option2. A 150mA draw is beyond what a small shared supply comfortably delivers alongside several other pedals, so plan on a supply with headroom.
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Questions
Is the ammoon Octa analog or digital?
Yes, the ammoon Octa is an analog pedal. Its circuit type is listed as analog on the maker's product page, which is unusual for a polyphonic octaver, since most pedals that track chords polyphonically use digital pitch detection.
What power supply does the ammoon Octa need?
The ammoon Octa runs on 9V DC with a center negative plug, drawing 150mA. That current draw is on the high side for a compact analog pedal, so a dedicated 9V supply rather than a shared daisy chain is the safer choice.
Is the ammoon Octa polyphonic?
Yes. The maker describes the Octa as a precise polyphonic octave stompbox, meaning it is designed to track more than one note at a time rather than only single-note lines like a classic monophonic octaver.
Can the ammoon Octa make a guitar sound like a 12-string?
The maker claims it can. With fast tracking and dynamic octave generation, the Octa is said to make a six-string sound like a 12-string with one stomp, by blending an upper octave with your dry signal.
Sources (2)
- Octa by Ammoon, RockBoard PedalPedia, 2026
- Keeley Introduces Octa Psi Pitch Shifter and Octave Fuzz, Premier Guitar, 2024-09-24
