Undulator is Eventide’s classic modulated tremolo effect from the iconic H3000 effects processor. This unique, rhythmic effect combines ethereal feedback and detuned echos, run through an AM / FM modulated tremolo. Whether used for manipulating samples or adding movement to strings, pads, guitars, and keys, Undulator is a muse for creative musicians. Add Undulator into your plug-ins collection for the most playable tremolo-style effect on your DAW or iOS device.

Undulator excels at evolving pads, sync’d chops, and time-lapsing dreamy soundscapes. Combined with a multi-tap delay and powerful tremolo, Undulator’s controls give any sound sustain and shape. This is perfect for transforming ordinary synths, keys, guitars, and even vocals into evolving pads, tempo synced production elements, or ethereal and fluctuant delays. Simply put, Undulator can make shorter sounds into longer layered effects, and give sustaining sounds shape and rhythmic character.

Use the Ribbon to morph tremolo patterns into vacillating and varying rhythmic territories. This can be effective for calling attention to synth pads and creating a state of flux or rarity which is otherwise arduous to achieve.

- Turn up the MIX to increase the dry/effect ratio
- Utilize multiple modulation waveform shapes and sources to alter the rhythmic feel
- Subtly finesse detuning of delays by using SPREAD
- Add FEEDBACK to accentuate delays or create infinite loops
- The Secondary LFO determines how fast the depth and speed modulation “wiggle” their targets
- Lock the tremolo to tempo using SYNC
- RETRIG at the top of the waveform for a more predictable effect
- RIBBON lets you ‘play’ the effect in real-time and provides dynamic and fluid control to morph back and forth between the settings of your choice
- SLOW/FAST button toggles on a “Slow LFO” mode. Holding it down to “BRAKE” temporarily slows down the LFOs at a constant rate until released
- Update the tremolo speed in real time using the TAP button
- iOS version available on App Store works as a standalone app, AudioUnit v3 plug-in, or Inter-App Audio effect

Ratings and Reviews

5.0 out of 5
5 Ratings

5 Ratings

Enrique Raphaël Page Pérez ,

One of Eventide’s bests.

This app is one of my faves by Eventide and I own them all. This and blackhole all day long!

housemachine ,



Dimapicstudio ,

Dimapicstudio :The best

For any type of creativeness this app slams it.Go get it already. Run it through anything and instant gratification. I love it


Eventide Inc.
14.1 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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