Doepfer A-100

A Doepfer A-100 in a P6 suitcase enclosure
Example piece of music performed entirely on a Doepfer A-100

The Doepfer A-100 is an analog modular synthesizer system introduced by German audio manufacturer Doepfer in 1995. Although it only had 10 modules at time of release,[1] it currently has more than 120 modules[2] plus several different enclosures and accessories.

A-100 modules are designed to be rackmounted, each being 3U tall and a multiple of 2HP wide, though a variety of cases are available to house them. This type of racking system, 'Eurorack', has been adopted by many other manufacturers of synthesiser modules. Modules are patched using standard mono miniature (3.5 mm) leads. This combination of 3U height, multiples of 2HP width, and 3.5 mm leads is known more generally as the Eurorack standard, and is in contrast to the older combination of 5U height and 6.35 mm leads pioneered by Moog. Other companies such as Analogue Solutions, Analogue Systems, Roland, Moog and Cwejman have also adopted the Eurorack standard, making it relatively easy to integrate their modules into each other's systems.

Using certain modules designed specifically for the purpose, it is possible to use the A-100 system to emulate a Trautonium or a Theremin, as well as to use it as a vocoder.[3]

Modules

The following modules have been, or are still being, manufactured by Doepfer:[4]

  • A-101-1 Vactrol multimode filter
  • A-101-2 Vactrol low-pass filter / VCA
  • A-101-3 12 stage vactrol phaser
  • A-101-9 Dual universal vactrol module
  • A-102 EMS VCS 3 style 18 dB/octave diode low-pass filter
  • A-103 Roland TB-303 style 18 dB/octave transistor ladder low-pass filter
  • A-104 Trautonium style formant filter
  • A-105 24 dB/octave SSM2044 based 24 dB/octave low-pass filter
  • A-106-1 Korg MS-20 style 12 dB/octave low-pass / 6 dB/octave high-pass filter
  • A-106-5 Oberheim SEM style 12 dB/octave multimode filter
  • A-106-6 Oberheim Xpander style multimode filter
  • A-107 Oberheim Xpander style multimode filter
  • A-108 6, 12, 24, and 48 dB/octave low-pass / band-pass transistor ladder filter
  • A-109 Signal processor
  • A-110 Standard VCO
  • A-110-2 Basic VCO
  • A-110-4 Thru zero quadrature VCO
  • A-111 High end VCO
  • A-111-5 Mini synthesizer voice (combination VCO / filter / VCA / LFO / ADSR envelope generator)
  • A-112 Sampler / wavetable oscillator
  • A-113 Trautonium style subharmonic generator
  • A-114 Dual ring modulator
  • A-115 Audio divider
  • A-116 Waveform processor
  • A-117 Digital noise generator / Roland TR-808 style discordant sound source
  • A-118 Analog noise generator / random voltage
  • A-119 External input / envelope follower
  • A-120 Moog style 24 dB/octave low-pass filter
  • A-121 12 dB/octave multimode filter
  • A-122 Oberheim style 24 dB/octave low-pass filter with CEM 3379 chip
  • A-123 24 dB/octave high-pass filter
  • A-124 EDP Wasp style 12 dB/octave multimode filter
  • A-125 Phaser
  • A-126 Frequency shifter
  • A-127 Triple resonance filter
  • A-127 Filter breakout module
  • A-128 Fixed filter bank
  • A-129/1 Vocoder analysis
  • A-129/2 Vocoder synthesis
  • A-129/3 Vocoder slew limiter
  • A-129/4 Slew limiter controller
  • A-129/5 Voiced/unvoiced detector
  • A-130 Linear VCA
  • A-131 Exponential VCA
  • A-132-1 Dual linear low cost VCA
  • A-132-2 Quad VCA
  • A-132-3 Dual linear / exponential VCA
  • A-132-4 Quad exponential VCA / mixer
  • A-133 Dual polarizer
  • A-134-1 Panner
  • A-134-2 Dual crossfader
  • A-135 Mixer
  • A-136 Distortion / waveshaper
  • A-137-1 Wave multiplier I
  • A-137-2 Wave multiplier II
  • A-138A Linear mixer
  • A-138B Exponential mixer
  • A-138C Polarizing mixer
  • A-138D Crossfader / effect insert
  • A-138E Quad three-way crossfader / mixer / polarizer
  • A-138X Mixer expander (for use with A-138A or A-138B)
  • A-138M 4x4 matrix mixer
  • A-139 Headphone amplifier
  • A-140 ADSR envelope generator
  • A-141 Voltage controlled ADSR envelope generator
  • A-141-2 Voltage controlled ADSR / LFO
  • A-142 Decay envelope generator / gate
  • A-143-1 Complex envelope generator / quad AD envelope generator / quad LFO
  • A-143-2 Quad ADSR envelope generator
  • A-143-3 Quad LFO
  • A-143-4 Quad voltage controlled LFO / VCO
  • A-143-9 Quadrature LFO
  • A-144 Morphing controller
  • A-145 LFO I
  • A-146 LFO II
  • A-147 Voltage controlled LFO
  • A-148 Dual sample and hold / track and hold
  • A-149-1 Buchla 200 style quantized random voltages / stored random voltages
  • A-149-2 Eight digital random voltages
  • A-150 Dual voltage controlled switch
  • A-151 Quad sequential switch
  • A-152 Addressed track and hold / analog shift register / octal switch (multiplexer)
  • A-154 Sequencer controller
  • A-155 Analog / trigger sequencer
  • A-156 Dual quantizer
  • A-160 Clock divider
  • A-161 Clock sequencer
  • A-162 Dual trigger delay
  • A-163 Frequency divider
  • A-164-1 Manual gate
  • A-165 Dual trigger inverter
  • A-166 Dual logic gate
  • A-167 Analog comparator / subtractor / offset generator
  • A-170 Dual slew limiter
  • A-171 Voltage controlled slew limiter
  • A-171-2 Voltage controlled slew processor / generator
  • A-172 Maximum / minimum selector
  • A-174-1 Joystick
  • A-174-2 Wheels
  • A-175 Dual voltage inverter
  • A-176 Manual control voltage source
  • A-177-1 Foot controller I
  • A-177-2 Foot controller II
  • A-178 Theremin style antenna
  • A-179 Light controlled voltage source
  • A-180 Multiples I
  • A-181 Multiples II
  • A-182 Switched multiples
  • A-183-1 Dual attenuator
  • A-183-2 Offset generator / attenuator / polarizer
  • A-183-3 Amplifier
  • A-185-1 Bus access
  • A-185-2 Precision adder
  • A-186 Gate/trigger combiner
  • A-187-1 DSP effects
  • A-188-1 BBD
  • A-188-2 Tapped BBD
  • A-189-1 Bit modifier
  • A-190-1 MIDI to CV/gate/sync interface
  • A-190-2 MIDI to CV/gate interface
  • A-190-3 USB/MIDI to CV/gate interface
  • A-190-4 USB/MIDI to CV/gate/sync interface
  • A-190-5 Polyphonic USB/MIDI to CV/gate interface
  • A-190-8 USB/MIDI to sync interface
  • A-191 MIDI to CV interface / shephard generator
  • A-192 CV to MIDI interface
  • A-192-2 CV/gate to MIDI/USB interface
  • A-196 Phase-locked loop
  • A-197-1 VU meter
  • A-197-2 LCD oscilloscope
  • A-198 Trautonium style ribbon controller
  • A-199 Spring reverb

Notable users

References

External links

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