Argentinian developer GS Music follows up its Apollo 1 monophonic synth with something altogether bigger and badder – Zeus, a multitimbral analog polysynth.

Zeus is a multitimbral analog polyphonic synthesizer featuring substractive synthesis. The sound generation is entirely analog. Each voice has two voltage controlled oscillators (VCO), a mixer, a voltage controlled amplifier (VCA). The control signals on each voice are digitally generated by a microcontroller, which is capable of processing three low frequency oscillators (LFO) and two ADSR envelopes (EG). This synthesizer is still a prototype.


  • Keyboard: 49 keys, velocity sensitive with aftertouch
  • Polyphony: 12
  • Oscillators: 2 voltage-controlled analog oscillators (VCO) with sub-oscillators. Hard sync.
  • Oscillators waveshapes: Triangular, Saw-Tri, Sawtooth, Pulse with PWM. It is possible to mix pulse with other waveshape
  • Filter (VCF): 24dB/oct (4 poles) low pass filter with resonance control
    Envelopes: 2* (Attack, Decay, Sustain, Release), Velocity to Attack
  • LFO: 3
  • LFO waveshapes: Triangular, Rampa up, Rampa down, Square,
  • Sample and Hold
  • Effects: Chorus, Delay
  • Presets: TBD
  • Connections: MIDI IN, MIDI OUT, MIDI Thru, Audio Output (Plug 1/4” TRS balancead), Sustain, USB, Filter CV, Amplifier CV, Audio input.
  • Power supply: AC 220V

The post first appeared on Ask Audio

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