as of October 24th, 2016
Upcoming Events

11./12.11.2016: Just Music Hamburg „two days“, workshop conducted by Patrick Detampel of Alex4
17./18.11.2016: MPX, UK für reddog music, talk about the history of Eurorack by Holger Zapf von Alex4
18./19.11.2016: Just Music München  „two days“, workshop conducted by Patrick Detampel of Alex4
19./20.11.2016: sines & squares in Manchester, UK,  talk about the history of Eurorack by Holger Zapf von Alex4
25./26.11.2016: Just Music Berlin „two days“, workshop conducted by Patrick Detampel of Alex4
01. - 05.12.2016: Patrick Detampel and Daniel Miller of Alex4 in the Pop Akademie Mannheim, Eurorack workshop and news

Now available: new VCOs A-111-2 / A-111-3,  Performance Mixer A-138o/p, Ringmodulator / S&H / Slew Limiter A-184-1 , Sine Shaper / VC Crossfader A-184-2
Musotalk: We built a Eurorack Modular Synthesizer (German language)
Teil 1
Gehäuse und Netzteil
Teil 2
Eastcoast vs. Westcoast
Teil 3
Teil 4
Teil 5
Teil 6
Teil 7
Teil 8
Teil 9
Utility Module
A-157 Trigger Sequencer
A-100SSB Small Supply Bus

A-100SSB is a combination of power supply and bus board with 8 connectors for A-100 modules.
for applications with up to 8 modules and a max. current of 380 mA.
A-100SSB is available as ready built and tested unit and available
September 2016.

A-100 among the 10 Most Widely Influential Synths Ever
This is just to let you know that the A-100 series modules were featured in Myles Avery's article The 10 Most Widely Influential Synths Ever, running on Flypaper:
Now available: Vintage Versions of these A-100 Modules
Now available: Black versions of A-100LC Cases

Prices see Priceliste
(the picture shows an A-100LC3V with installed vintage modules) 
Prices see Priceliste
Prices see Priceliste
Prices see Priceliste
A video you should not miss shows the Superbooth demo by Colin Benders on a small A-100 system. He starts from scratch (nothing patched) and shows what you can do with a handful of modules only to create a live performance. He uses just an A-100LCB and A-100LC9 for the demonstration. Worth seeing !
(two different view of the same performance)

More Superbooth videos: 
A-100 Modules in planning stage
High-End-VCO II
Micro Precision VCO
Performance Mixer
Triangle-to-Sine Converter/
VC Crossfader
Trapezoid Thru Zero VCO
Triangle Based Thru Zero VCO
PWM Generator
Ring Modulator / S&H/T&H /
Slew Limiter Combo
New Module A-180-3
 Buffered Multiple 
New Power Supply A-100PSU3
Since end of 2015 all A-100 cases - except the A-100LC3 - are equipped with a more powerful suppy. The new supply is named A-100PSU3 and has available 2000mA@+12V, 1200mA@-12V and additional +5V with 4000mA. +5V are no longer required for A-100 modules but there are many modules from other manufacturers that require +5V. The additional price for all A-100 cases and systems with one power supply is Euro 50 (A-100G6/P6/P9/PB/LC6/LC9/LCB). The additional price for monster cases with two power supplies is Euro 100 (A-100PMS6/PMS9/PMB). The additional price for the A-100PMS12 is Euro 200 (4 supplies). The additional prices include the additional price for the A-100PSU3 and the additional wiring of the +5V to all bus boards. The new supply is equipped with a wide range mains voltage input 100...240V. Thus one has no longer to distinguish between cases for 115V or 230V. Only the value of the fuse in the mains inlet is different for 115V and 230V versions.

Technical notes: Internally the A-100PSU3 is a +/-15V switching supply (wide range input 100...240V for mains voltage) followed by the classical linear regulation circuit of the A-100PSU2 that generates the required +12V and -12V. Only the +5V is a pure switching supply without linear regulation. We discovered that a pure 12V switching supply was not good enough for the modular system (especially the load regulation was not satisfying for all 12V switching supplies we tried). That's why we added the well-tried linear 12V regulation to the 15V switching supply. As the current for +12V and -12V is different we will specify in the future the currents for +12V and -12V separately for all modules. But as a rule each A-100 module consumes less current at -12V compared to +12V. For the time beeing (i.e. until the detailed current specs for all modules are available) one can take the previous current values for +12V.
The Excel planning file contains already the detailed current specs for all A-100 modules: System Planner (Excel™)
An existing power supply (A-100NT12 or A-100PSU2) can be replaced easily by the new A-100PSU3 because the A-100PSU3 has nearly the same dimensions and the mounting bolts are at the same positions. Nevertheless the replacement or installation has to be carried out by qualified personnel only because the correct wiring of the mains connection is essential. And it's essential that all parts that conduct mains voltage (cables, pc board, electronic parts on the pc board) are mechanically protected against any contact with the human body (touch-proof, e.g. by using a cover for the power supply). Otherwise there is Danger to Life !

Temporarily the A-100 cases will be available in both versions (i.e. with PSU2 or PSU3). As soon as the A-100PSU2 are used up only cases with A-100PSU3 will be available. The cases with PSU2 and PSU3 can be distinguished by the label next to the mains inlet (mains voltage specification "100...240V" = A-100PSU3, mains voltage specification "230V" or "115V" = PSU2).

Even the scope of supply of the A-100 bus boards will change early in 2016. The bus boards will be equipped in the future with 4 instead of 3 connections cables. Cable #4 is required for the additional +5V connection. The price for the bus boards with 4 cables will be a bit beyond the version with 3 cables. The bus boards remain unchanged as they were prepared from the beginning since 1996 for the additional +5V. Only an additional cable for the wiring of the +5V is required provided that the +5V are used.

The following document shows the wiring of the A-100PSU3 with the bus boards and the mains inlet: A100PSU3_wiring.pdf. Laymen are not allowed to carry out these works ! Danger to Life ! 

Special Editions A-110-4 / A-124

Temporarily a special edition of the Quadrature Thru-Zero VCOs A-110-4 is available. It is equipped with a blue anodized front panel and white knobs. The price is Euro 140.
A-110-4 sound example by one of our customers:
Temporarily a special edition with black front panel and yellow knobs is available (order no. A-124SE).
A-100 Controlled Drawing Machine
Musik made with A-100
DiN48 - Parallel Worlds and Self Oscillate - 'World adapter' cd album
Ingo Zobel (Self Oscillate) and Bakis Sirros (Parallel Worlds) first started collaborating via the internet in 2004. Their first album, “Current Flow”, under the project name “Interconnected”, was released in 2010 on the Belgian VU-US label. Following this a vinyl EP of ambient tracks called “Mechanic Environments” was released in 2013 on the Dohkonul record label.
For “World Adapter”, their second full collaborative album, Ingo and Bakis are using their more widely known aliases of Self Oscillate and Parallel Worlds respectively. Four years in the making this album is redolent with the sounds and textures of modular analogue synthesisers which both musicians are well known for employing in their music. Ingo uses a large Doepfer / Eurorack system whereas Bakis creates his complex sonic textures with Doepfer, Serge and Buchla systems as employed on his previous DiN releases (Obsessive Surrealism (DiN26), Shade (DiN32), Exit Strategy with Ian Boddy (DiN37) and Morphogenic with Dave Bessell (DiN41)).
Once their modular improvisations are recorded they are micro-edited in Ableton Live to form the ten tracks that make up “World Adapter”. On the track “Legend Silence” they collaborate with the Polish singer/composer India Czajkowska whose ethereal voice adds a distinctive flavour to this composition. The album has an IDM flavour, full of complex modulations and intricate rhythms. The duo then hang beguiling, simple melodies around these structures to create another intriguing quality release from the DiN label

soundcloud demo file of all tracks:

Machines used:
Doepfer, Euro, Serge, Buchla, MOTM, Moon, Blacet, Metalbox, RS-Integrator, Technosaurus & modulars.
Oberheim Xpander & OB-Mx.Korg PE1000, MS20, Mono/Poly & Z1. Clavia Nord Modular, Nordrack2 & Nordrack3. Ableton Live & NI Reaktor software. Roland System-100, Waldorf Microwave and various other string machines, analogue keyboards, tape echoes, reverbs, CV modifiers and generators.

Drøn has released their latest album "Comm" on the US label Carpe Sonum. It features 14 tracks, which were produced using a wide range of old and new synthesizers, including a huge A100 System. The album is available as download or as limited edition CD (only 300 copies). 

You can check it out here:

Gusgus open air live in Barcelona 2015


Produktion des MAQ16/3 wird eingestellt
MAQ16/3 Der MAQ16/3 wird seit über 20 Jahren produziert. Mittlerweile gibt es große Beschaffungsprobleme bei einigen Bauteilen, so dass wir uns dazu entschlossen haben die Produktion einzustellen. Verkauf solange Vorrat reicht !
New Modules A-110-4, A-139-2, A-160-2, A-160-5

Thru Zero VCO
Clock Divider II
Clock Multiplier/
Ratcheting Controller
Summer Colors

The rotary knobs used in the A-100 are now available with different colors. The modules are still delivered with grey knobs. Because of logistic reasons it's not possible to deliver modules with different colored knobs. But the customer is able to order the knobs separately and replace the grey knobs by the new ones as the knobs are simply plugged on the potentiometer shafts. The colored knobs can be used also in other products like MAQ16/3, Dark Energy or Dark Time. You find the new knobs in the price list in the spare parts section.

Namm / Musikmesse Frankfurt 2015
On the occasion of the Frankfurt Musikmesse we showed these new products:



already available
Basic VCO

already available
Thru Zero VCO
already available
VCLFO with Delay
already available
already available
already available
Trigger Sequencer
planned for end of 2015
Clock Divider II
already available
Clock Multiplier/
Ratcheting Controller
already available
USB/Midi to CV/Gate
planned for end of 2015
A-100 Starter System 1
A-100 Starter System (A-100BSS1)
Breakout Module for A-127

The breakout module A-127BOM for the triple filter module A-127 is now available. It features separate access to each of the three filters of the A-127, separate outputs lowpass, highpass, bandpass and notch for each filter and a separate audio input for each filter. The price is Euro 70.00.

USB/Midi-to-CV/Gate/Sync Interface A-190-4

The new USB/Midi-to-CV/Gate/Sync interface A-190-4 is now available. It is the successor of the former interface A-190-1
The price is Euro 175.00.
For more detailed information the user's guide is available: A190_4_man.pdf

Eurorack synth module based on our DIY Synth

XAOC Karl Marx Stadt

A-100 Low Cost Case A-100LC3
The 1U version of the low cost cases A-100LC6/LC9 is now available. The A-100LC3 is very similar to the A-100LC6 but offers only one row with 84 HP for installation of modules. A-100LC3 is equipped with one power supply (1200mA) and one bus board. Because of the limited space the power suppy of the DIY-Kit #1 with an external transformer is used (same as for the DIY-Kit #1). At the left side of the case the connector for the external transformer is located. The external transformer is not shown in the above pictures. The outside dimensions of the case are in mm about  445 (width) x 160 (depth) x 150 (height). The price of the A-100LC3 will be about Euro 180 (including external power supply for 230 or 115V AC, without modules).
A-100 Suitcase Base A-100PB
The "small brother" of the monster base A-100PMB is now available. The new case A-100PB is very similar to the A-100PMB but has only half the width (2 x 84 HP for installation of modules). The suitcase versions A-100P6 or A-100P9 can be positioned on top of the A-100PB because the width of the A-100PB is a bit more than the width of A-100P6/P9 and the footprint of the A-100PB is adapted to the depth of A-100P6/P9. A-100PB is equipped with one power supply (1200mA) and two bus boards. The bus boards are located in the rear area (even those for the modules that are mounted in the front row). This was necessary to take advantage of the full height of the front area for installation of A-100 modules. The max. depth for modules in the front row is ~70 mm. The outside dimensions in mm are about  510 (width) x 420 (depth) x 210 (height).  The price of the A-100PB will be about Euro 550 (without modules).
Midi/USB to Sync Module A-190-8

Module A-190-8 is a Midi/USB to Sync interface. These are the most important features of this version of the module:

  • Midi input (recognizes only Midi realtime messages clock, start, stop and continue)
  • USB input for Midi via USB
  • Clock outputs:
    • 96: outputs the Midi clock 1:1 (96 pulses per measure/ppm or 24 pulses per quarter note/ppq)
    • 32: outputs the Midi clock divided by 3 (32 pulses per measure/ppm or 8 pulses per quarter note/ppq)
    • 16: outputs the Midi clock divided by 6 (16 pulses per measure/ppm or 4 pulses per quarter note/ppq)
    • 8: outputs the Midi clock divided by 12 (8 pulses per measure/ppm or 2 pulses per quarter note/ppq)
    • 1: outputs a pulse at the start of each measure
  • Other outputs:
    • Start: outputs a pulse at each Midi Start or Continue message or generates a gate signal that remains in the high state until a Midi Stop message occurs (selectable via jumper)
    • Stop: outputs a pulse at each Midi Stop message
    • Reset: outputs a pulse at each Midi Start message that follows a Midi Stop message
    • Wait control input, can be selected by means of a jumper between Gate function or Switch function: in Gate mode the positive edge of a gate signal is used to init the Wait state, in Switch mode an external switch that connects to GND is used to init the Wait state (equivalent to Switch-Trigger)
  • Wait button / Wait control input: Whenever the Wait button is operated or a positive voltage is applied to the Wait input the module waits for the next measure start until the clock signals are generated. 
  • LED displays for clock, "1" and start (display of Start depends upon the chosen Start mode, see above)
  • output voltages can be selected between +5V and +12V by means of an internal jumper (for DIN Sync applications +5V has to be used !) 
  • firmware updates via USB (provided that there will be updates available)
Revised version of A-135-1

As of now the revised version of the A-135-1 is shipped. Compared to the previous version of the A-135-1 the inputs and outputs of the new version are normalled:

  • All signal inputs are normalled, i.e. signal input #1 is normalled to signal input #2 unless a plug is inserted into signal input socket #2, same is valid for the signal inputs 2 > 3 and 3 > 4, each normalling (1>2, 2>3, 3>4) can be interrupted by removing a jumper 
  • All CV inputs are normalled, i.e. CV input #1 is normalled to CV input #2 unless a plug is inserted into CVl input socket #2, same is valid for the CV inputs 2 > 3 and 3 > 4, each normalling (1>2, 2>3, 3>4) can be interrupted by removing a jumper 
  • the mode of the sum output can be chosen between "All" and "Selection". In "All" mode all four VCAs are mixed together. In "Selection" mode a VCA is removed from the sum signal when a plug is inserted into the corresponding single output.
Voltage Controlled Envelope Generator A-141-2

A-141-2 is a voltage controlled ADSR type envelope generator/LFO with some remarkable features:

  • manual controls and control voltage inputs with attenuators for all parameters (A), Decay (D), Sustain (S) und Release (R)
  • common control voltage input for the three time parameters A, D and R with selectable direction, i.e. it can be chosen if an increasing control voltage increases the A, D and R time or if it lowers the times (like a VCLFO or VCO)
  • three-position time range switch 10:1:100 with the approximate time ranges 50us ... 6 s (position "x1"), 500us ... 60s (position "x10"), 5ms ... 10 min (position "x100")
  • 3 envelope outputs: normal, inverted and variable
  • control voltage input for the envelope level at the variable output (by means of a jumper one can select between positive envelope of polarizer function with positive/zero/inverted envelope)
  • Retrigger input
  • End-of-Attack and End-of-Release outputs
  • normalized CV inputs A - D - R (by means of switching contacts of the sockets) 
  • it's also possible to change the slope of each envelope segment continuously from exponential via linear to logarithmic
  • LFO mode
  • Gate input can be connected to the A-100 bus
Interview with Dieter Doepfer

The online magazine Great Synthesizers has published an interview with Dieter Doepfer:

and report about the A-100 workshop in Munich:

Discontinuation of A-100 Modules with blue LEDs
The production of the special version of the A-100 modules with blue LEDs will be discontinued. While stocks last A-100 modules with blue LEDs are available without additional charges. Please ask our sales office ( if the module in question is still available with blue LEDs.
A-100 Tutorials
Video tutorials by Raul Pena:

Doepfer A101-2 LPG Modes Intro: 
Doepfer A101-2 Low Pass Gate-VCA Mode: 
Doepfer A101-2 Low Pass Gate-Combined Mode: 

A110 Features and Functions: 
A110 VCO/A145 LFO Frequency Modulation: 
A110 VCO/ A145 LFO-More Frequency Modulation: 
A110 Waveforms and Pulsewidth demonstration: 
A110 VCO /A145 LFO-Pulse Width Modulation: 
A110 VCO /A145 LFO- More Pulse Width Modulation: 

A110 filtering with A101-2 and A120 intro: 
A110 filtering with A101-2 LPG: 
A110 More filtering with A101-2 LPG: 

A-114 Ring Modulation of Basic Waveforms: 
A-114 More Ring Modulation: 
A-114 Further Modulations: 

A118 Filtering with A120 VCF Low Pass Filter Part One: 
A118 Filtering with A120 VCF Low Pass Filter Part Two:

A-127 Introduction: 
A-127 Modulation: 
A-127 More Modulation:  
A-127 Audio Rate Modulation: 

A-131 VCA Intro: 
A-131 Processing CV with A-131 EXP VCA Part One: 
A-131 Processing CV with A-131 EXP VCA Part Two: 
A-131 Amplitude Modulation with A-131 EXP VCA: 

A140 ADSR Envelope Generator Part One-Introduction: 
A140 ADSR Envelope Generator Part Two: 
A140 ADSR Envelope Generator Part Three-VCO Patch: 
A140 ADSR Envelope Generator Part Four- White Noise Patch:

A-148 Sample and Hold: 
A-148 More Sample and Hold: 
A-148 Track and Hold: 
A-148 More Track and Hold: 
A-148 Track and Hold Vs. Sample and Hold: 
A-148 Sample Rate Reduction using T/H and S/H: 
A-148 Using other Waveforms in T/H and S/H: 

A-149-1 Quantized Random Voltages 
A-149-1 Stored Random Voltages 
A-149-1 Modulation of Quantized and Stored Random Voltages 

A-156 Basics: 
A-156 Modes of Operation: 
A-156 Modes of Operation Part Two: 
A-156 More CV Sources, Transposing, and triggers: 
A-156 More CV Sources, Transposing, and triggers Part Two: 

A-188-x BBD Basics: 
A-188-1 part 1: 
A-188-1 part 2: 
A-188-1 part 3:

A189-1 VControlled Bit Modifier Basics: 
A189-1 VC Bit Modifier-Bit Crushing: 
A189-1 VC Bit Modifier Demo-Sample Rate: 
A189-1 VC Bit Modifier Demo-Bit Crushing: 
A189-1 VC Bit Modifier Demo-Sample Rate: 
A189-1 VC Bit Modifier Processing CV Part 1:A189-1 VC Bit Modifier: 
A189-1 VC Bit Modifier Processing CV Part 1:A189-1 VC Bit Modifier:

Amazona workshop Dark Energy with A-100 miniature case (part 3)
The workshop explains (in German language) how to expand the Dark Energy by means of an A-100 miniature case with some A-100 modules. It includes also several patch and sound examples :

Part 1: 
Part 2: 
Part 3:  

Richard van der Meer has translated the workshops into English language and added a blank sheet too (thank's a lot Richard):

Doepfer Dark Energy_Amazon.de_Workshop-English.pdf 
Blank Patch sheet Dual VCO with DE_A100 Minicase.pdf

Workshop Part 1_Patch sheet Dual VCO with DE_A100 Minicase.pdf

Nice video with Dark Time and Dark Energy 
French user manuals for Dark Energy and Dark Time
Many thanks to Nathalie & Pascal Fournet who translated the user manuals of Dark Energy and Dark Time into French:

Dark Energy:

Dark Time:

A-100 Convergence
The website contains music that was made mainly with A-100 Analog Modular System.
Sample Library made with A-100
Surround SFX have released Transistor Rhythm, a premium 24/96 Sample- & Pattern-Library for the NI Maschine. The A-100 system was used for synthesizing and/or processing many of the included 800 drum- and one-shot-samples.Check it out at

Application examples by Synth Project for USB64 and MKE

Youtube-Video hierzu

Videos with A-100 New A-100 video by Christian Hatvani that shows not only noises or grooves but the basic sound of the A-100. Doepfer goes minimalistic
Excellent music and live videos by MINE and Daidenzin (Osaka, Japan) using the A-100
Daren Ager: "Using the small Doepfer system as a kind of 606+303 combo, not a musical statement, just me having some fun. All the sounds and sequencing done entirely on the system shown."
Gusgus with A-100 suitcase live on stage:
The Redundant Rocker at studio Helio.Gen:
vailable at
Dark Energy and A-100 Miniature Case in Concert

Two Dark Energy, one A-100 Minicase, a lot of fun:

A-178 Theremin videos by our customer Jamie O'Callaghan:

Improvisation with A-100 suitcase

Random improvisations with an A-100 suitcase by James Bragg: www.myspace. com/vjjamesbragg

A-100 Theremin

A nice video that shows the Japanese singer and thereminist Eri playing the A-100 with the Theremin modules A-178.


A-100 Minisystem

Tutorial video: A-100 Mini-System Patch/Sound examples

This video made by Luca Capozzi shows some patches and sound examples of the A-100 Mini System:

Tutorial video: Controlling the A-100 with a Wiimote Gamepad

An excellent video by our A-100 user Max that shows how to use a wiimote gamepad to control the A-100: com/watch? v=LHOS2zg- 0nI


Midi accordion with built-in Pocket Electronic

This cool video shows the usage of the Pocket Electronic in a midi accordion to control a joystick/wheel, a ribbon controller and additional buttons:

A-100 in Simian Mobile Disco Goes Gear (on Matrixsynth)

Matrixsynth / A-100 Modular System suitcase used in Simian Mobile Disco Goes Gear: http://matrixsynth. blogspot. com/2007/ 10/simian- mobile-disco- goes-gear.html

A-100 Modular Patchbay System Used By Surachai At Ramp Chicago

Gearwire / Doepfer A-100 Modular Patchbay System Used By Surachai At Ramp Chicago:

Amazona A-100 Report Series
Oscillators I Oscillators II Oscillators III Filters I Filters II Filters III Time 1 Time 2
SOUND ON SOUND Modular Synths Report
Overview of Modular Synths as of spring 2009 in the April 2009 issue of Sound on Sound

Editor's choice: A-100

Revised A-100 Planner

Stefan Breitenfeld has revised his excellent A-100 planner. Pay attention that the planner uses JavaScript and the width of your monitor should be at least 1280 pixels to have access to the module selection box:

  • totally new design
  • forum for members
  • Google Maps with manufacturers and dealers addresses
  • exchange rates are updated directly from the EZB
  • compatible to Internet Explorer
  • patch drawing engine (beta)

Please report possible faults or suggestions for improvement directly to the author:

Interview's Parallel Worlds

There is a new Parallel Worlds extensive interview on the Analogue Haven website including many studio and analogue modular synth photos:
Interview: Online interview with Parallel Worlds in Electronic Musician Magazine

The full interview with Parallel Words on the US Electronic Musician magazine is now online:


Older Reports and Videos

NAMM 2008:

Sonic State: http://www.sonicsta shownews. cfm?newsid= 6048



Test Doepfer-System A-100 in
Gearwire / Doepfer A-100 Modular Patchbay: The Land Of Analog Make-Believe
Musikmesse 2007:


NAMM 2006:

Sonic State NAMM video (demonstration of the A-100 BBD module and the touch sensor keyboard):

Onebluemonkey NAMM video (demonstration of the A-112 in wavetable mode, A-100 BBD module and the touch sensor keyboard):

A-100 Online reviews:
A-100 report in French magazine: Keyboards Recording / KR (France), issue February 2006 (février 2006, #205), pages 40-44
Sound example by Robert Sigmuntowski for the usage of the sequencer A-155 in combination with the sequential switch A-151 to switch the CV rows of the A-155 on-the-fly: A155_A151_demo.mp3