AtomoSynth Intros ‘Old School’ Asterion Modular Synthesizer

AtomoSynth has introduced the Asterion Modular synthesizer, an ‘old school’ all-analog design.


  • All modules are independent, with no internal connection – it needs to be patched to produce any sound.
  • All sound generation and control signals are 100% analog.
  • Rugged – all metal construction & all potentiometers and jacks fixed to the metal panel.
  • High quality full-sized bakelite knobs.
  • High quality double sided PCB board.
  • Components set and soldered by hand.
  • High quality components, all potentiometers with dust seal.
  • Patchbay separated from the knobs for ease of use
  • 104 patch points with 1/4″  jacks.
  • “Old school style instrument” – control with cv/gate keyboard or cv/gate sequencer.

Here’s a sneak preview of the Asterion in action:


  • 3 VCOs, each with Tune (10 turn precision potentiometer) and pulse width controls. Pulse and saw waveform. 2 CV inputs and PWM cv input.
  • 2 LFO with square, triangle and saw waveforms.
  • 1 White noise generator.
  • 1 Glide module.
  • 2 audio mixers with 4 inputs and 2 outputs each.
  • 2 VCF each one with Low pass input and High pass input, peak/resonance control, 2 cv inputs, 2 audio outputs.
  • 3 Envelope generators ADSR type.
  • 2 Audio VCA with output level (volume) control and cv control input.
  • 3 Voltage mixers each one with 2X gain and 2 inputs (input 2 with offset function), mix output and inverted mix output.
  • 2 Voltage/audio attenuators.
  • 6 signal splitters.
  • Internal power supply (110V -240V AC)
  • Dimensions: 635mm (W), 335mm (H), 150mm (D)

Pricing and Availability

Pricing and availability for the Asterion are still TBA at the AtomoSynth site.

5 thoughts on “AtomoSynth Intros ‘Old School’ Asterion Modular Synthesizer

  1. Very nice design. knob spacing and knob size are very important. As much as I love modular, there’s something to be said for having all of the patch cables hanging below and not obscuring the controls.

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