A-100 analog modular Website
Andreas Krebs Pimp my VCADSR! The predecessor A-141 was a more than useful module for many purposes, but there were still “wishes” when it came to the details: The A-141 wasn’t as fast and “snappy” as the legendary A-140, and loopable envelopes like the A-143-1 or A-143-2 would sometimes be nice… With the new A-141-2, Doepfer has … Read more
The module is small and interesting. A stripped down to two parameters but still flexible envelope generator with voltage control, hardwired to a linear VCA, plus a ducking function. The whole thing is also designed twice on only 8 HP. This is made possible by the new “Slim Line” format with slightly smaller buttons and … Read more
The module is no longer in production. The A-127 BOM is an extension for the A-127 Triple Resonance Filter. It supplements the module with individual inputs for each of the three filters, as well as separate outputs (per filter) for bandpass, highpass, lowpass and notch. The original A-127, on the other hand, only offered a … Read more
The concept of the triple resonance filter A-127 reminds me personally of the resonators in the Korg PS3100, which make this polyphonic analogue dinosaur sound so special. Technically, however, the three integrated filters in the A-127 are more comparable to the SEM filter (even if they are preconfigured differently). In terms of sound, just one … Read more
The A-150-8 is a very extensively equipped module that provides a total of 8 programmable 1:2 or 2:1 switches. What is programmable? Two LEDs per switch indicate which of the two “I/O” sockets on the left is connected to the “O/I” socket on the right. So we can either switch between two input signals at … Read more
The A-177-2 Foot Controller module is a connection module for a foot controller and a double foot switch. This is not simply a large-to-small multiple, but the module actively generates control voltages or gate signals that are controlled by electrically passive foot switches / foot controllers. A large-to-small multiple, on the other hand, would be … Read more
The module is no longer in production. The A-144 Morphing Controller generates control voltages that are used, for example, to regulate four linear VCAs of a voltage-controlled mixer in such a way that the four input signals of the mixer are morphed one after the other. The A-135-1 or A-135-2 Voltage Controlled Mixer and the … Read more
The Subharmonic Oscillator is a very unusual module that originated in Doepfer’s Trautonium project. Doepfer had implemented the necessary components of a Trautonium (a historical forerunner of today’s analog synthesizer by Friedrich Trautwein, 1888-1956) within the A-100 system. Unlike most other frequency dividers that output square wave signals, the A-113 produces sawtooth signals whose frequency … Read more
The A-198 Trautonium / Ribbon Controller originates from Doepfer’s Trautonium project, which attempted to recreate the components of a Trautonium using modern A-100 modules. Compared to the console of the original, the ribbon controller is playable with significantly less nuance: the original was a fine metal string with several centimeters of pressure travel. Of course, … Read more
The module is inspired by Friedrich Trautwein’s Trautonium, a forerunner of today’s synthesizer. The Trautonium became particularly well-known through the work of Oskar Sala, who used it to produce the film music for Hitchcock’s “The Birds”. However, other composers of the 20th century also composed for the trautonium, such as Paul Hindemith. In principle, the … Read more
