PA0 Phase Animated Oscillator


4 in stock

SKU: Weston Precision_.PA0 Phase Animated Oscillator Maker: Types: ,


VCO with triangle-core phase animator and through zero PM

It’s not just a phase… PA0 is a voltage controlled oscillator (VCO) module for Eurorack (18HP). It is a triangle core design with an additional triangle phase animator circuit which provides a copy of the 4 primary waveform outputs (triangle, saw, sine, and square) with adjustable phase lag from 0 to 180 degrees. Additionally the phase animator can be pushed past 0 and 180 to add additional harmonics. PA0 provides through-zero linear phase modulation (PM) and linear frequency modulation (FM), as well as exponential FM.


  • Through zero PM and FM
  • Lockable phase difference of 90 degrees (quadrature)
  • 2 types of sync: hard and soft
  • 8-position octave rotary selector with high-class encoder
  • Several auxiliary waves including sub octave square, PWM (modulated through phase modulation system), and “MW” wave.


  • 18HP module width
  • 25mm Deep
  • Power 110mA +12V / 95mA -12V

User Manual (revision 03)

Sound Samples