Introducing the Oneiroi: Befaco’s Latest Drone Synth Module

Befaco, known for its innovative contributions to the world of modular synthesis, has unveiled its latest creation—the Oneiroi drone synth module. Designed with a focus on creating ambient pads and drone-like soundscapes, the Oneiroi is set to become an essential tool for musicians and sound designers alike.

Features and Functionality

At the heart of the Oneiroi lies a powerful combination of oscillators and effects designed to create lush, immersive audio environments. Key features include:

  • Oscillators:
    • Sine Wave Oscillator: Provides smooth, pure tones ideal for foundational drone sounds.
    • Supersaw Oscillator: Adds richness and complexity with multiple detuned saw waves.
    • Wavetable Oscillator: Utilizes the looper buffer for dynamic, evolving textures.
  • Looper:
    • 5-Second Stereo Looper: Records either the stereo input or the module’s output, allowing for seamless layering and sound-on-sound looping.
  • Multimode Filter: Offers low-pass, band-pass, high-pass, and comb filter options to sculpt and shape your sound precisely.
  • 3-Band Resonator: Enhances harmonic content, adding depth and character to your patches.
  • 2-Tap Echo and Reverb: Create expansive spatial effects with macro control for size, filtering, and direction.

Modulation and Randomization

The Oneiroi excels in modulation capabilities, featuring various self-modulation types with configurable routing, providing extensive control over level and speed. For those who enjoy exploring unpredictable sonic territories, the module includes a powerful randomizer with four different targets, three levels of intensity, and the ability to undo and redo changes. This allows users to generate instant patches at the touch of a button, making it easier than ever to experiment and discover new sounds.

External Synchronization and Control

External synchronization is made simple via the sync input, ensuring that the Oneiroi can integrate seamlessly into any modular setup. CV control with attenuators on most parameters offers further flexibility, allowing for precise adjustments and creative modulation possibilities.

Technical Specifications

  • Current Needs: +12V=200mA, -12V=60mA
  • Width: 30 HP
  • Depth (Assembled Version): 25mm
  • Design and Assembly: Designed, kits prepared, and assembled in Barcelona.


The Oneiroi is an ideal choice for creating dense atmospheres suitable for hypnotic music or cinematic sound design. Its comprehensive feature set makes it a versatile addition to any modular rig, capable of producing everything from subtle ambient washes to complex, evolving soundscapes.

For more information and to purchase the Oneiroi, visit the Befaco website.

The Oneiroi promises to be a groundbreaking addition to the modular synthesizer community, offering unparalleled creative potential for those looking to explore the realms of ambient and drone music.




dabodab is a blog about various things DiY and the creative people and activities surrounding them. I am Briyan Frederick (aka Bryan Baker), probably best known as the publisher of GAJOOB and a founder of Tapegerm Collective read more.


How can I find even more underground and unknown songs?Tom Dahl (Caddy)