The OKKO FX T3 Tremolo is a tremolo pedal built in Leipzig, Germany, that can do everything from vintage amp style modulation to, in the maker's words, "weird polyrhythmic" effects. Its main tremolo circuit uses two optocouplers, which allow it to produce either a harmonic tremolo or a regular tremolo effect1. OKKO FX describes it as a "full-featured super Tremolo"1.
[!NOTE] The T3 carries a list price of €251,26 on OKKO FX's own product page1.
What the T3 does
Tremolo modulates the volume of your signal, and the T3 covers both the familiar kind and the harmonic style associated with certain vintage amps. The two optocouplers in the main tremolo circuit are what make the harmonic or regular choice possible1. The signal path is fully analog and parallel, built with rail-to-rail opamps run on 18V internally for increased headroom, even though the pedal itself runs on a regular 9V supply1.
Controls and tempo
The waveform section offers sine, triangle and square shapes, each with adjustable symmetry, so ramp up and ramp down shapes are possible1. Tempo comes from the speed pot or a tap tempo footswitch, and either source can be multiplied by 1, 2 or 3, which is how the pedal reaches its polyrhythmic territory1.
| Control | What it does |
|---|---|
| Waveform select | Sine, triangle or square1 |
| Symmetry | Adjusts the waveform shape; ramp ups and downs possible1 |
| Speed | Sets the tempo1 |
| Tap tempo footswitch | Sets the tempo by tapping1 |
| Tempo multiply | Multiplies the tempo by 1, 2 or 31 |
Power and build
The T3 runs on a regular 9V supply and draws 65mA according to RockBoard's PedalPedia2. At that draw it needs its own supply output rather than a shared low-current daisy chain on a crowded board. Every pedal is handbuilt in Leipzig, Germany, and OKKO FX says its builders are actively touring or retired musicians and technicians; the company has been at it since its official launch in 20031.
For where the T3 sits among tremolo pedals, its combination of harmonic and regular modes, adjustable waveform symmetry and tempo multiplication is what sets it apart from a straightforward single-waveform tremolo1.
Videos
Mike Hermans
Signal Path
BUZZBEE TV
Questions
Does the OKKO FX T3 Tremolo have tap tempo?
Yes. The tempo can be set with the speed pot or with a tap tempo footswitch, and either way the tempo can be multiplied by 1, 2 or 3, which is how the pedal reaches its polyrhythmic effects.
How much current does the OKKO FX T3 draw?
RockBoard's PedalPedia lists the T3's current draw at 65mA. It runs on a regular 9V supply, so plan your pedalboard power accordingly.
Is the OKKO FX T3 Tremolo analog?
Yes. OKKO FX describes the T3 as having a fully analog and parallel signal path, built with rail-to-rail opamps run on 18V internally for increased headroom, while the pedal itself runs on a regular 9V supply.
Where is the OKKO FX T3 Tremolo made?
OKKO FX builds the T3 in Leipzig, Germany. The maker says every pedal is handbuilt by actively touring or retired musicians and technicians, and that the company has been building pedals there since its official launch in 2003.
Can the OKKO FX T3 do harmonic tremolo?
Yes. The T3's main tremolo circuit uses two optocouplers, which allow it to produce either a harmonic tremolo or a regular tremolo effect, covering everything from vintage amp style modulation to more unusual rhythmic patterns.
Sources (2)
- T3 TREMOLO, OKKO FX
- T3 Tremolo by Okko FX, RockBoard PedalPedia, 2026