A-100 prototype
Doepfer A-100 prototype
The A-100 prototype was a Eurorack format analogue modular synthesiser made by Doepfer circa 1995.
It quickly evolved into the regular A-100.
Standard configurations
| A-110 VCO | A-110 VCO | A-154 Ring Mod. | A-181 Waveform Processor | A-180 Frequency Divider | A-188 Trigger Inv. | A-189 Multiples | A-170 Mixer | A-120 VCF 1 | A-131 VCA Log. | A-130 VCA Linear | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A-190 MIDI to CV / Sync | A-190 Clock Divider / Sequencer | A-150 LFO | A-150 LFO | A-150 LFO | A-115 Noise / Random | A-152 Dual S&H | A-140 ADSR | A-140 ADSR | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Modules
The following modules were included in the Base System. There may or may not be any others.
| Model | HP | Description | Evolution |
|---|---|---|---|
| A-110 | 10 | VCO | Footing range increased |
| A-115 | 10 | Noise | Narrowed to 8 HP; renumbered A-118 |
| A-120 | 10 | 24 dB lowpass VCF | Narrowed to 8 HP |
| A-130 | 8 | Linear VCA | LED replaced with overall volume knob |
| A-131 | 8 | Exponential VCA | LED replaced with overall volume knob |
| A-140 | 10 | ADSR envelope generator | Narrowed to 8 HP |
| A-150 | 10 | LFO | Narrowed to 8 HP |
| A-152 | 4 | Dual S&H | Renumbered A-148 |
| A-154 | 4 | Ring Mod / Dual Voltage Inverter | Split into A-114 dual ring mod and A-175 Dual voltage inverter |
| A-170 | 10 | Mixer | Split into A-138a and A-138b |
| A-180 | 8 | Frequency divider | Renumbered A-115 |
| A-181 | 8 | Waveform processor | Renumbered A-116 |
| A-188 | 4 | Trigger inverter | Various; renumbered A-165 |
| A-189 | 4 | Multiples | Renumbered A-180 |
| A-190 | 10 | Clock divider / Gate sequencer | Split into A-160 and A-161 |
| A-190 | 10 | MIDI to CV and sync converter | Various |
A-100: A-100 prototype
