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Module A-142-1 is a voltage controlled envelope generator. The only time parameter is decay (like TB303).  Decay may be adjustes manual and via voltage control

Module A-142-4 contains four simple envelope generators.  The only time parameter is Decay and can be adjusted manuall by means of the Dec. control in the range 2

Module A-143-1 is a complex envelope generator that consists of Attack/Decay generators. For the complex envelope generator the four units are daisy-chained  i.e.

Module A-143-2 is a four-fold ADSR type envelope generator.  The module contains 4 independent ADSR-type envelope generators.  Each sub-module has available

Module A-143-3 is a low-cost four-fold modulation oscillator, often called LFO (low frequency oscillator).  Like the other modules of the A-143 series (A-143-1 and

Module A-143-4 is a fourfold voltage controlled low frequency oscillator (LFO). As the frequency range includes moderate audio frequencies it can be used as a four-fold

Module A-143-9 is a derivative of Doepfers planned thru-zero quadrature VCO. It is a voltage controlled sine LFO with 4 outputs.  The phase shift between the

Module A-145 is a low frequency oscillator, which produces cyclical control voltages in a very wide range of frequencies.  Five waveforms are available: sawtooth,

Module A-145-4 is a simple quad LFO (Low Frequency Oscillator). Not a very "exciting" module, just a bread-and-butter device and a simple demon for work.

Module A-146 (LFO 2) is a Low Frequency Oscillator, which produces periodic control voltages over a wide range of frequencies.  The LFO can be used as a modulation

Module A-147-2 is the successor of the VCLFO A-147 but offers much more features than the predecessor. The module is made of three sub-units: VC-LFO, VCA and

Module A-147-2 is the successor of the VCLFO A-147 but offers much more features than the predecessor. The module is made of three sub-units: VC-LFO, VCA and