Doepfer A-149-4
Professional music gear - detailed information and where to buy
Doepfer
A-149-4
Product Info
* Prices may vary. Check retailer for current pricing and availability.
The A-149-4 is a fantastic little module for anyone exploring generative music or needing unpredictable voltage sources. It's a great tool for experimental composers and sound designers who want to add controlled chaos to their patches – it's a classic for a reason.
Product Description
- Doepfer A-149-4
- Eurorack Module
- Digital four-channel random voltage source
- Generates 4 triggered and quantised random voltages (range: 0 V to +5 V)
- Adjustable octave range
- Selectable quantisations: octaves
- octaves + fifths
- chords
- scale
- semitones
- continuous
- Minor or major key selectable
- Separate buttons for adding a sixth or seventh
- 4 Trigger inputs and 4 CV outputs
- Power consumption: 50 mA (+12 V) / 10 mA (-12 V)
- Width: 4 U
- Depth: 50 mm
PROS
- • Excellent random voltage generation for experimental soundscapes
- • Flexible quantization options provide musical and unpredictable results
- • Compact 4U format maximizes space in tight Eurorack setups
- • Robust Doepfer build quality ensures long-term reliability.
CONS
- • Limited voltage range restricts extreme modulation possibilities
- • Can be overwhelming for beginners due to its many options
- • Lack of direct sequence recording limits rhythmic complexity.
Product Video
Key Features
Type
Eurorack Module
Functions
Digital four-channel random voltage source with quantization and scale selection
HP Width
4 U
Depth
50 mm
Power Draw
50 mA (+12 V) / 10 mA (-12 V)
Connections
4 Trigger inputs, 4 CV outputs
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Frequently Asked Questions
Unlike many simpler random sources, the A-149-4’s scale selection lets you constrain the randomness to specific musical keys, providing more predictable melodic content.
Yes, the 0-5V range is a standard and compatible with the vast majority of Eurorack modules, although some very high-voltage inputs may be limited.
While it generates random voltages, it doesn’t directly sequence rhythms. You’ll need other modules to translate those voltages into rhythmic patterns.
