A-100 analog modular Website
Andreas Krebs Compared to the A-110-4 Quadrature Thru Zero VCO, the A-110-6 has one more thing on top: We are not dealing with a sine core, but with a trapezoid core. This is a unique design that first creates a trapezoidal waveform, as well as a 90 degree phase-shifted trapezoid (the equivalents of the A-110-4‘s sine and … Read more
Compared to the rather unpretentious predecessor A-147, the new VCDLFO (Voltage Controlled Delayed LFO) is a monster. No fewer than 12 connection sockets on a module that is only 8 HP wide are already an announcement in terms of complexity in a confined space. In fact, Doepfer added a delay function to the voltage-controlled LFO … Read more
The Vactrol filter has several special features. Most striking: There is a separate input for each of the operating modes lowpass, bandpass and highpass. This allows several very different sound sources to be treated differently in a single filter. Only the cutoff-frequency and the resonance (and resonance control) are common. If that’s too much for … Read more
The A-168-1 is a small auxiliary module that generates a square or pulse oscillation that can be modulated in width for LFOs or VCOs without a square/pulse. This is an interesting feature for LFOs in particular, since almost all LFOs can generate a fixed, symmetrical square wave (at least the A-146 is capable of manually … Read more
The module is no longer in production. The A-167 Analog Comparator can compare voltages with each other and generate a gate signal. There are many possibilities: comparison of two external voltages, comparison of a voltage (normal or inverted) with a positive or negative threshold value, comparison of the difference between two external voltages with a … Read more
Like the A-120, the A-108 filter is also based on the Moog transistor cascade, but uses not only 4 poles, but 8 and can therefore have a maximum slope of 48 dB. That sounds sensational at first, but in real synthesizer life it’s not that extremely spectacular. What is striking, however, is the fantastic and … Read more
The A-132-3 Dual Lin. / Exp. VCA has two identical sub-modules. Both amplifiers can be switched independently between linear and exponential characteristics. In addition, there is a clear and solid equipment (CV input with attenuator and manual “gain” control), so that the module is very versatile. User interface Inputs (for each of the 2 sub-modules): … Read more
The Complex Envelope Generator is a very versatile modulation source. It consists of four AD envelopes (i.e. there are only attack and decay phases), which can be cascaded in any combination, trigger each other or be operated in an “LFO” mode. Due to the complexity of the circuit and setting options, the A-143-1 requires a … Read more
The Wasp Filter uses the somewhat idiosyncratic filter circuitry of the 1978 EDP Wasp synthesizer. The 12 dB filter produces very peculiar, “wild” distortions at higher resonances, which, however, always remain very easy to control. Possibilities and structure of the module (but not the layout of the front panel) are similar to the A-106-5 SEM … Read more
The module is no longer in production. The A-172 maximum/minimum selector leaves many “modularists” at a loss at first. A module that selects and makes available both the maximum and the minimum voltage from up to four input signals may appear too “mathematical” or intricate. In fact, the module is a surprisingly easy-to-use tool for … Read more
