TONE – 3340 VCO

The TONE is an analog voltage controlled oscillator with a wide frequency range and 8 trackable octaves. It uses the Alfa AS3340 chip (a CEM3340 clone), famous for its outstanding sound quality. For DIY folks, the TONE is easy to assemble!


  • Simultaneously available triangle, saw and pulse outputs
  • Frequency range: 5Hz to 28kHz
  • FM input
  • PWM input and attenuation control
  • 1V/o input, tracks 8 octaves
  • Hard sync


  • Width: 8HP
  • Depth: 22mm
  • Power draw:
    • +12V: 20mA
    • -12V: 19mA

Includes power cable and module screws.