Doepfer

Doepfer A-111-3 Micro Precision VCO/LFO

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$160.00

In Stock
The Micro Precision VCO/LFO is a space-saving and utterly precise analog VCO/LFO with an extremely big frequency range, immaculate tracking over at least ten octaves, and nearly perfect waveforms. Basically it is the same circuitry like the High-End VCO/LFO A-111-2 but with reduced functions and controls. Yet it is super suitable as a modulator for exact linear FM and much more.

The A-111-3 has two elements for setting the frequency: a switch selecting between LFO and VCO mode as well as a tune control with a jumper-selectable range:

  • Jumper position 1: 16Hz to 20 kHz 
  • Jumper position 2: 16Hz to 70Hz 
  • Without jumper: 16Hz to 22Hz 

The XM potentiometer can be used as a fine tune control as long as nothing is patched to the XM socket.

The oscillator has a frequency range of at least fifteen octaves (0.0001 - 40Hz in LFO mode; 0.5Hz to 20kHz in VCO mode) and offers perfect 1V/octave tracking over ten octaves minimum, typically in the range of 20Hz to 20 kHz. Frequencies below 25Hz are visualized with a two-color LED. The 1V/octave input is accompanied by two FM inputs, one for linear and one for exponential frequency modulation. A jumper determines whether the module obtains pitch CV via the internal bus.

The VCO has a triangle core from which sawtooth, pulse, and sine are derived. The wave forms are almost perfect and sans glitches. The pulse width can be set with a control from 0 to 100% and of course it can be modulated. There is one input for oscillator synchronization and its type, either hard or soft sync, is jumper-selected. Both types differ in sound with the hard sync being more aggressive and richer in harmonics.

The Micro Precision VCO/LFO is a space-saving and utterly precise analog VCO/LFO with an extremely big frequency range, immaculate tracking over at least ten octaves, and nearly perfect waveforms. Basically...

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Width: 4HP
Max Depth: 65mm
Power: 40mA@ +12V , 40mA@ -12V , 0mA@ +5V