New Modular Groovebox Synthesizer For iOS, Drambo

BeepStreet has introduced Drambo,  a new modular groovebox and audio processing environment for iOS.

With Drambo, you can use modular components to create instruments and effects. Then you can create beats and sequences, using a built-in step sequencer.

Drambo can be used as:

  • A complete music production and performance environment.
  • A modular playground that allows you to build, modify and store custom instruments and effects. For instance:build a custom synth, sample and resample, build a Theremin using a gyroscope module, or turn your table into a playable surface, by processing microphone input with physical modelling modules. Get weird or make functional instruments and tools.
  • A MIDI sequencer that works with hardware and AUv3 instruments (e.g. Drambo sequences other instruments in an AU host app). Moreover Drambo can generate custom MIDI CC messages or modulation signals to control modular synths via DC coupled interfaces.
  • An AUv3 synthesizer, effect or sequencer in other DAWs.

Here’s what they have to say about Drambo:

At the heart of Drambo lies an entirely new concept that makes modularity easy, fun and affordable. Modules are connected automatically, with no cables as you add or rearrange them. A dynamic interface creates modulation knobs when you need them. Modules may house other modules, so you can keep your patch well organized.

Of course, automatic connections can be overridden. In Drambo you can focus on playing with sound and signal structure without getting lost in wires.

Use a deep and innovative sequencer to compose patterns and whole tracks, for production or live performance. Go beyond simple looping sequences with parameter locking, conditional step components, and powerful scene morphing.

Drambo works equally well as a self-contained standalone app or audio unit plugin with audio and MIDI connectivity as an AUV3 instrument, audio effect, and midi effect. No modular experience necessary to get started playing with preset sounds and effects.


  • Unique modular concept: cable-less, drag’n’drop, color coding dynamic interface, automatic connections, and customizable compact, rack views.
  • Directional flow (helps in better overview). There are no instant feedback routings in Drambo. Delayed feedback is possible using certain modules.
  • Simple and clean interface, that scales to every size and device orientation
  • Custom modular racks, presets on different levels.
  • Polyphonic, stereo processing. Audio-rate modulation. All signals are equal.
  • Multiple modulators per parameter without additional mixer modules.
  • Polyphonic step sequencer with parameter locks and step components. Up to 64 beats and 256 steps per pattern.
  • Over 120 modules available, such as: oscillators, samplers, physical modelling modules, LFOs, envelope generators, filters, audio effects mixers, MIDI processors, sequencers and math functions.
  • Morph groups: you can morph many parameters using a single slider.
  • Available as a standalone app, AUv3 instrument, effect and midi effect.
  • MIDI support

Here’s a short demo of Drambo in action:

Here’s a quick look at building a synth patch:

Here’s a series of video tutorials by Ben Richards:

Pricing and Availability

Drambo is available now for $19.99 USD....

Free iOS Synthesizer, SynthMaster One

SynthMaster One – a Universal synth for iOS – is available for a limited time as a free download.

SynthMaster One is a powerful wavetable synth that offers 16-voice polyphony, deep wavetable synthesis capabilities, AUv3 support, effects, cloud patch synchronization and more.


  • ]Universal App: SynthMaster One is a universal standalone/AUv3 synth app running on iPhone 7 and above.
  • 650 Factory Presets: SynthMaster One iOS comes with presets from a world class team of sound designers: Arksun, Aiyn Zahev, BigTone Studios, Brian Transeau, Bluffmunkey, Bulent Biyikoglu, Gercek Dorman, Dejavu Sound, Fragment Audio, Kurt Ader, Mirko Ruta, Nori Ubukata, Rob Lee, Ufuk Kevser, Selcuk Ergen, The Machine, Vandalism Sound, Venus Theory, Vorpalsound and Xenos Soundworks
  • AUv3: SynthMaster One iOS supports AudioUnits V3, allowing multiple instances to run under supporting DAW apps like GarageBand, Cubasis or Beat Maker.
  • Files App Integration: Easily import/export presets, waveforms or scales using the common file browser UI (requires iOS 11+).
  • Real-time Modulation Feedback: See in real-time how modulation sources and targets change. This is a very helpful feature when designing sounds!
  • Cross Platform Cloud Synchronization: Easily synchronize your SynthMaster One related data across multiple platforms (Windows, MacOS, iPad, iPhone)
  • Semi-Modular Architecture: For each SynthMaster One instance, there are 2 oscillators with 2 sub oscillators, 2 Filters, 4 ADSR Envelopes, 3 LFOs, a powerful 16 step arpeggiator/sequencer and also 11 different effects that can be inserted on to 6 FX insert slots. The sub oscillators can be connected to the oscillators in 5 different modes which let you use it as a regular sub oscillator or do complex modulations such as ring modulation, amplitude modulation, phase modulation or frequency modulation.
  • 32 Step Arpeggiator/Sequencer: The arpeggiator in SynthMaster One features classic arpeggiator modes such as Up, Down, UpDown, DownUp, UpDown2, DownUp2, AsPlayed as well as Sequence, Chord and Arpeggiate modes.
  • Wavetable Synthesis: SynthMaster One implements true wavetable synthesis which opens up new possibilities for sound design. It comes with a rich content library with hundreds of waveforms and wavetables.
  • Stereo Oscillators with up to 16 voices Unison: Each of the 2 oscillators in SynthMaster One have stereo output, and can have up to 16 voices “unison”. Using the “voices”, “voices mix”, “detune curve”, “detune spread”, “pan stread”, “tone spread” and “phase spread” parameters, each oscillator can generate a rich “supersaw” type sound.
  • Zero Delay Feedback Filters: All of the 4 filter categories in SynthMaster One are developed using the zero delay feedback filter technology. With advanced filter parameters like input gain, drive, acid, filter nonlinearities and up to 4 times oversampling you can get that “analog” sound from the filters!
  • Rich Set of Effects: SynthMaster One features 11 different effect types: Distortion, LoFi, Ensemble, Phaser, 6 Band EQ, Compressor, Vocoder, Delay, Chorus, Tremolo, Reverb.
  • Microtuning: SynthMaster One supports Scala tuning, so tuning can be set either for each preset or globally by loading from a Scala tuning file. SynthMaster One comes with 300+ scales ranging from 5 note equal tempered scales to 12 note alternate tuning scales.
  • Preset Browser: SynthMaster One features a comprehensive preset browser with separate search criterias for instrument type, preset attributes, music style or preset author.

Pricing and Availability

SynthMaster One is available now as a free download....

Critter & Guitari has launched a Kickstarter project to fund production of the EYESY video synthesizer.

The EYESY has audio and MIDI inputs, so you can generate visuals that react to your music. And it outputs video to HDMI or Composite Video Output (NTSC or PAL), so it is easy to connect to a variety of TVs, displays and projectors.

You can tweak the video synth’s ‘Modes’ using the hardware controls, add and remove Modes using a browser-based interface, or even create your own Modes, if you can program in Python.



  • Raspberry Pi Compute Module 3
  • 1.2 GHz Processor
  • 1GB RAM


  • An 8GB micro SD card holds the operating system and modes


  • HDMI Output
  • Composite Video Output (NTSC or PAL)



  • 1/8″ Mini MIDI jack (TRS Type A connection)
  • USB MIDI (for class compliant devices)


  • Dimensions: 6.0 x 3.5 x 2.2″ / 15.24 x 8.9 x 5.6 cm. Height includes knobs.
  • Powder Coated Aluminum
  • Rubber Feet

Included Items

  • USB-WiFi Adapter
  • Power Supply. Input: 100-240VAC @ 50/60Hz. Output: 9VDC, 1.3A, Center-positive polarity.

Pricing and Availability

Production of the EYESY Video Synthesizer is being funded via a Kickstarter project and it is available to project backers starting at $295 USD. The project has already surpassed its funding goal....

Lurker releases Cave Echo - Free Plugin for Windows

Lurker Plugins has released the Cave Echo VST Effect plugin for Windows. Cave Echo is designed to allow a user to add a variety of ambient layers to their tracks. With multiple...


Soundiron releases "Cacophony" for Kontakt

Soundiron has released Cacophony, a collection of live concert hall performance sound effects, room tones, crowd reactions, orchestral tuning drones and incidental sound effects for the...


Soundiron Cacophony

Cacophony is easily the largest collection of live concert hall performance sound effects, room tones, crowd reactions, orchestral tuning drones and incidental sound effects you will find...