2 in stock

SKU: RandomSource -.PCO Maker: Types: ,


The Precision VCO (PCO) is Serge’s legendary oscillator. It combines raw vintage sound with astonishing precison.

The PCO is a versatile, voltage controlled oscillator now offering four high quality waveform outputs (sine, triangle, pulse and sawtooth) and both linear and exponential frequency modulation capabilities . A front panel switch conveniently extends the range of the PCO from the audio range (16 to 16,000 Hz) to a sub-audio range (.1 to 200 Hz) for use as a Low Frequency Oscillator.

Serge PCO WaveformsSerge PCO basic waveforms

EXCELLENT RESPONSE, TRACKING AND STABILITY: Featuring the identical exponential response, exceptional tracking characteristics, and perfect temperature stability as the NTO, the PCO is especially suited for use with the NTO or another PCO as a modulation source for dynamic depth linear FM.

Two calibrated one volt per octave inputs as well as a variable processing input are provided for complex frequency control. FM depth can be varied with the front panel adjustment. A Sync input is also available for locking the PCO to another oscillator’s fundamental, harmonic, or sub-harmonic frequency.

The Serge PCO is the only authorized version of Serge’s classic design.


  • Authentic Serge design
  • Now with PULSE OUT
  • Variable oven temperature
  • Manufactured in Germany
  • Eurorack (3U) format, 14 hp
  • Power consumption: 75mA @ +12V, 60mA @ -12V
  • Skiff-friedly, Module depth: < 30mm