Doepfer A-111-4V - Quad Precision VCO (Vintage Edition) [Three Wave Music]

Controls, inputs and outputs for each of the four VCOs: 1V/Octave CV input Octave switch (+1 / 0 / -1 octave) Tune control (range internally adjustable by jumpers: ~ 2 semitones / ~ 1 octave / ~ 4 octaves) Modulation CV input Modulation destination: upper position: exponential frequency modulation (XM) lower position: linear frequency modulation (LM) or pulsewidth modulation of the rectangle (PM), selectable via internal jumper Frequency Modulation (FM) or Pulsewidth Modulation of the rectangle (PWM) Modulation intensity Triangle output Sawtooth output Rectangle output (about 50% without external PWM) Sync input (hard or soft sync internally selectable via jumper, CEM3340 hard sync type) min. 10 octaves range (with appropriate external CV) CEM3340 based VCO (triangle core) each VCO has it's own separate internal +/- power supply for each for best stability and the prevention of unwanted synchronisation of the VCOs Controls, inputs and outputs of the master section: 1V/Octave CV input Octave switch (+1 / 0 / -1 octave) Tune control (range internally adjustable by jumpers: 2 semitones / 1 octave / 4 octaves) Frequency Modulation CV input (FM) FM intensity Triangle sum output Sawtooth sum output Rectangle sum output as soon as the single wavefo