Synthesizer AUv3 iPad iPhone Apple Silicon Mac

App Store1624422460
iPad/iPhone Apple Silicon Mac

NAMBU is a 6-operator FM synthesizer that supports AUv3 plug-ins. It's a semi-modular FM synthesizer that incorporates modern ideas, not designed to recreate the sound and workflow of a vintage FM synthesizer.

Click here for the manual...

Free update installable on Apple Silicon Mac

If you have already purchased this App on your iOS device, you can download it to your Apple Silicon Mac for free as long as you use the same Apple ID as your iOS device.

More information

Known issues with the Mac App Store that may occur when installing an app purchased on an iOS device to a Mac.

For apps that are compatible with both iOS and macOS, if you have already purchased the app on your iOS device, you should be able to download it for free as long as you use the same Apple ID on macOS as on your iOS device.

Unfortunately, the Mac App Store is known to have a display bug regarding apps already purchased on an iOS device. In this case, you should still be able to continue the purchase process and eventually download the app for free.

This issue can occur with any app for both iOS and macOS. The same problem can occur in any developer's app. This is an App Store issue and as a developer I am not competent to resolve issues that occur within the App Store.

Mentions of this Mac App Store bug by other developers
Moog Music:
These indicate that this Mac App Store bug is a display issue and not an actual billing issue. Please note, however, that there is no official Apple announcement on this issue.
If you have further questions or concerns, I encourage you to contact Apple Support.


  • Note that depending on the parameter settings, loud sound may be produced.
  • This product can be installed on Macs with Apple silicon, but not on Macs with Intel CPUs. It is not a Mac native app, but an iPad app that has been tested on Apple Silicon Macs. The window size of this product cannot be changed in Ableton Live.
  • This product is not suitable for the purpose of accurately reproducing the sound of acoustic instruments or other synthesizers. It has been developed with a focus on creating the sound of this synthesizer itself.
  • NAMBU is not compatible with vintage FM synthesizers and you cannot import those presets into NAMBU.
  • Please note that NAMBU has higher CPU usage than other iceGear Apps.
  • Self-feedback of the FM operator is possible, but it is not possible to configure a feedback signal path with the matrix mixer.
  • This product mainly contains basic presets that are useful as a starting point for sound creation. Please note that there are no huge amount of presets. Enjoy making sounds.

More Videos...


Block diagram

  • 6x Operators
  • 11x LFOs
  • 11x Envelopes
  • 2x Step sequencer
  • 3 Band EQ
  • Compressor
  • Saturator
  • Chorus
  • Delay
  • Reverb

6x Operators

Nambu has six operators. Each operator can be selected from six different types, including an FM operator for frequency modulation, an operator that mimics an analog synthesizer oscillator, noise, texture, resonator, and filter.

You can choose from 6 different operator types.

FM Operator

An FM operator that modulates the frequency of the oscillator with the input signal.

You can transform the waveform with Width, Bend, Invert, and Feedback parameters.

Self-feedback can be set individually for all operators.

arrow_forward VIDEO: FM Operator Demo


You can choose from 32 different waveforms.

Adjusts the width of the oscillator waveform.

Adjusts the bend of the oscillator waveform.

Oscillator Operator(Analog synthesizer style oscillator) + AM

The oscillator operator works similarly to the oscillators on analog synthesizers. It has pulse width modulation, oscillator sync, and a drift parameter that reproduces pitch instability.

Also, if there are any input signals, they are multiplied with the signal generated by this operator and output (AM: Amplitude Modulation).

arrow_forward VIDEO: OSC Operator Demo

Noise Operator + AM

It consists of a noise section that creates sustained noise such as white noise and digital noise, and an impulse section that creates crackling glitch noise.

arrow_forward VIDEO: Noise Operator Demo

Texture Operator + AM

An operator that reproduces texture sounds. These are mainly recorded sound effects, which are effective for the rising part of the sound.

You can also trigger the texture sound on note-off (You need to set the envelope so that it sounds after note off). This helps reproduce damper noise.

arrow_forward VIDEO : Click this link to hear what kind of textures are in Nambu.

Resonator Operator

A resonator operator that resonates the input signal at the frequency of the note. By inputting unpitched noise, you can create a sound similar to the sound of bowing a string or blowing a pipe. By inputting a short sound like an impulse, you can create a sound like a string being plucked.

arrow_forward VIDEO: Resonator Operator Demo

Filter Operator

The filter operator works similarly to the filter on analog synthesizers.

The filter operator has its own independent little ENV2.

arrow_forward VIDEO: Filter Operator Demo

Amplitude Modulators

Each operator has an LFO and an envelope generator that modulates its output volume.


This LFO modulates the volume of the operator.

Every operator has its own LFO that modulates its volume. These are different from the general purpose LFOs that can be selected with the "MOD" button.


This Envelope modulates the volume of the operator.

Every operator has its own envelope that modulates its volume. These are different from the general-purpose envelopes that can be selected with the "MOD" button.

Envelope Curves

You can adjust the curves of the envelope.

Modulations for the ENV parameters

Adjusts how much velocity or note number modulates the value of each parameter of the envelope.

Envelope Group

Operator envelope settings set in the same group are linked.

Operator Matrix Mixer

The Matrix mixer creates an operator network that is not limited to traditional "Algorithm" methods.

The matrix knobs adjust how much signal is sent from where to where. Self-feedback of the FM operator is possible, but it is not possible to configure a feedback signal path with the matrix mixer.

When you operate the matrix knob, a diagram showing operator connections is displayed in the upper right. The color intensity of the arrows connecting operators indicates the volume of the signal sent to that operator.

All Matrix volumes can be modulated with modulators.


Nambu does not have an "Algorithm" parameter like other FM synthesizers. It has a "Template" for initializing the operator network. You can adjust the matrix mixers to create even more complex operator networks.

General Purpose Modulators

Parameters with a "MOD" button can be modulated using general purpose modulators.

  • 4x LFOs
  • 4x Envelopes
  • 2x Step sequencer
  • 2x Keyboard scaling
  • 2x Velocities
  • 2x Macros

A pop-up window where you can adjust the modulation source and its modulation amount opens when you press the "MOD" button.



The envelope provided for the modulator can also be set to negative values.

Step Sequencer


In addition to "keyboard scaling" adjustments that close the filter in the higher frequencies, you can also create sounds that produce the bass sound in the lower range of the keyboard and the melody sound in the upper range.


In addition to "velocity scaling" adjustments that open the filter as you strike the keyboard harder, you can also create sounds that switch between tones depending on how hard you press the key.


By assigning the "Value" knob to a MIDI controller, you can control multiple parameters with a single knob.

Pitch Modulation




PreAmp (Compressor, Equalizer, Saturator)




Universal App

Compatible with Mac(Apple Silicon), iPad and iPhone.

Nambu can be installed on Macs with Apple silicon, but not on Macs with Intel CPUs. You can plug in host apps that support AUv3, such as Logic Pro, Garage Band, and Ableton Live.

Multiple layout UIs that are resizable and optimized for different screen sizes

Audio Unit Extension (AUv3)

You can use this AUv3 Plug-In in a host application that supports Audio Unit Extension (AUv3).


  • MIDI Input
    • Core MIDI
    • Bluetooth MIDI
    • Virtual MIDI
  • MIDI Clock synchronization
  • MIDI Controller Mapping

Programmable Arpeggiator

You can easily create your own pattern.

Master Tune

You can adjust the pitch of the entire instrument.


You can change the equal temperament tuning scale to a different tuning.

Preset sharing

You can share your presets with other users. You can add presets created by other users to your preset library using the iOS Share Extension feature.


More Screenshots...


Tweaking Demo

Sound Demo