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3Leaf Audio Octabvre MKII Octave Bass Pedal

3Leaf Audio Octabvre MKII Octave Bass Pedal - Discontinued

Condition: New



Player's Perspective

For many bassists, the old OC-2 pedals made in Japan are a sort of holy grail. You can find used ones online for several hundreds of dollars, but the brilliant mind of Spencer at 3Leaf Audio has given us an alternative. The Octabvre (pronounced "octave") is an octaver and a synth-machine all packed into one box. After working closely with world renowned bassist Tim Lefebvre, 3Leaf came up with this awesome pedal. The tone knob, when all the way counter clockwise is very true to a vintage OC-2 sound. As you turn the tone knob clockwise, the tone becomes fuzzier and more aggressive and starts to open up and fill out more of the frequency spectrum. Just that one knob alone gives you tons of versatility. The TIM switch adds low-end and changes the character of the tone knob for a tone that is fat and simply massive sounding. 

Along with coming up with some super cool sounds, the MKII has a separate "Sub" footswitch (and it's own volume control) which allows you to cut out everything except for the subharmonic frequencies to give your bass a true synth tone as well as response. The tracking on this is great and can handle producing frequencies such as a low-A (whole tone below the low B on a 5-string bass).

Manufacturer's Description

The Octabvre MKII takes the circuit from the original Octabvre and adds a toggle switch that selects between the original sound and the popular “Tim tuning” modification to bassist Tim Lefebvre’s personal Octabvre. Simply pronounced “octave,” it is a dual mode analog octaver that adds a harmonically rich sub octave to your instrument

Volume - Overall output volume. Unity gain is around 12 o’clock.

Mix - Variable blend between your dry signal and the octave down signal. Fully clockwise removes the dry signal from the circuit.

Tone - The sound quality of the octave down signal. Fully counter-clockwise is a functional equivalent of the classic OC-2 circuit. As the tone knob is turned up, the sound becomes fuzzier and starts to take up more of the frequency spectrum.

TIM - This switch activates the popular “Tim tuning” mod, adding low end and changing the character of the tone knob.

Bypass - Relay-based silent true bypass will automatically switch to bypass mode if power is lost.

Sub - Cuts the dry signal so that you only hear the sub octave. Volume in this mode is set by the Sub Vol. knob.

Tracking Note - The Octabvre MKII is an analog monophonic octaver. This means it can only track one note at a time, and playing chords will result in glitchy behavior (which you might find desirable!). Tracking is affected greatly by technique, pickups, strings and dead spots on the neck. For best results, play cleanly and use your instrument’s neck pickup. Tracking is best when the Octabvre is as close to the beginning of the signal chain as possible, before any fuzz or modulation effects that might confuse the tracking circuit.

Overall Condition

This 3Leaf Audio Octabvre MKII is in brand new pristine mint condition with no nicks, scratches, or blemishes.


  • 3Leaf Audio Octabvre MKii
  • Octaver
  • Volume, Mix, Tone, and Sub. Vol. Knobs
  • TIM Switch
  • 9V DC Compatible (not included)
  • Bypass and Sub Footswitches
  • Relay-Based Silent True Bypass

Our in house guitar tech has inspected, tested, and cleaned all of our instruments on site prior to shipping. All of our instruments are guaranteed to be fully functional upon arrival.

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Please allow 2-4 business days from the receiving date for returns to be processed.
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Is your instrument just not doing it for you? We understand and we absolutely want you to be thrilled with any gear that you buy from If you're not happy with your order, you can return it to us at no charge within 30 days of delivery.

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