4ms Releases Ensemble Oscillator, Advanced Waveshaping Techniques Meet Polyphony

SYNTH ANATOMY uses affiliation & partner programs (big red buttons) to finance a part of the activity. If you use these, you support the website. Thanks! 

Ensemble Oscillator, the latest collaboration between 4ms & Matthias Puech is a new module that combines 16 sine wave oscillators with a variety of shapers.

At NAMM 2020, 4ms presented the ensemble oscillator, a deep digital oscillator for Eurorack. This module was created with none other than Mathias Puech who has already worked on older releases. Today comes the news that the module is ready to ship.

The Ensemble Oscillator is a unified polyphonic voice of sixteen sine wave oscillators combining additive, FM, phase-distortion, and wave folding synthesis techniques in new ways. Everything you can do with sines waves in a relatively compact module. It allows you to quantize the oscillators to scales or series of harmonics which makes it possible to explore the sonic boundary between music chords and rich evolving textures.

4ms Ensemble Oscillator

Easily create a wide variety of sounds ranging from aggregates of pure sine waves to pulsar synthesis or pristine harmonic tones and lush wide chords to rich dirty drones and rumbling glitches. Custom scales can quickly be “learned” and saved using a CV keyboard or by manually entering notes with the controls.


  • 16 sine-based oscillators bound to intervals of a selected Scale
  • 30 factory-programmed, user-writeable scales organized in three groups:
    • 12TET: all notes quantized to equal temperament, repeating over octaves
    • Octave: unquantized notes, repeating over octaves
    • Free: unquantized notes, repeating over the interval between the lowest and highest note
  • A simple method to program (“Learn”) your own scales manually or with a CV/Gate keyboard
  • Three Twist phase distortion effects
  • Three Warp wave distortion effects
  • Three algorithms of Cross FM for modulating the oscillators with each other
  • Mono or stereo output with selectable panning algorithm
  • Freeze button and jack to freeze the frequency of some of the oscillators, with selectable algorithm
  • Two 1V/oct inputs: Pitch (non-quantized), and Root (quantized)
  • High-accuracy, temperature-stable, eight octave range (-2V to +6V), can be calibrated to any keyboard
  • Six bi-polar CV inputs (-5V to +5V)
  • Two gate inputs for automated Learning and Freezing

4ms Ensemble Oscillator is available now for $299 USD.

More information here: 4ms 

Eurorack News

Be the first to comment

Leave a Reply

Your email address will not be published.