ALM has introduced the Sid Guts – a new Eurorack module basd on the sound generator chip used in the Commodore 64.

The MOS Technology 6581/8580 Sound Interface Device chip, aka the SID, was the sound generator chip used in the Commodore 64 home computer. The SID, by the means of 3 wavetable oscillators, a real analogue multi mode filter, an ADSR and various cross modulation options, provided the soundtrack to a generation of computer gaming.

The Sid Guts takes the legendary SID chip and tailors it into the Eurorack modular environment. By use of a real SID chip, the classic sound is taken in a new direction with the levels of direct and voltage control only a modular system can offer. Here’s a video introduction to the Sid Guts:


  • 1volt per octave control of a ?core? SID oscillator 0-5v input (with tunable offset)
  • Direct and voltage control of oscillator wave shape selection (Pulse, Triangle, Square, Saw).
  • Filter switchable between 4 modes – 12dB/Octave HP , LP , BP & Notch (HP+LP).
  • Direct and Voltage control (with offset) of Filter cutoff and Resonance.
  • 1 volt per octave control of second SID ?modulation? oscillator.
  • Direct and voltage control of modulation oscillator ?type?; ring modulation, sync or none.
  • Direct and voltage control of pulse wave pulse width.
  • External audio input.

The SID GUTS does not support the following SID features;

  • Remaining 3rd oscillator
  • ADSR
  • Other features include;

See the ALM site for additional details and sound demos.

via Oliver Chesler & Synthtopia

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