Behringer Abacus
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Behringer
Abacus
Product Info
* Prices may vary. Check retailer for current pricing and availability.
The Abacus is a seriously clever little module for the price. It's a great starting point for modular beginners exploring envelope shaping and LFO possibilities, or a useful utility for seasoned synth explorers who need extra routing flexibility on a budget. It's not going to replace a top-tier envelope module, but it's surprisingly versatile.
Product Description
- Behringer Abacus
- Eurorack Module
- 2-Channel function generator and CV processor
- 2 Function generators with setting options for attack
- decay and characteristic curve (from logarithmic to linear to exponential)
- loop button
- trigger and signal input
- CV inputs for attack
- decay and loop
- Signal output per function generator as well as "End of Attack" trigger output for channel 1 and "End of Cycle" trigger output for channel 4
- Possible applications: AD and AHD envelope
- oscillator
- slew limiter
- filter
- clock divider and more.
- 4-Channel bipolar mixer for both function generators and 2 external signals
- Single outputs per channel plus outputs for sum
- inverted sum and logic OR
- Power consumption: 60 mA (+12 V) / 50 mA (-12 V)
- Width: 20 U
- Depth: 24 mm
PROS
- • Highly flexible function generation for diverse synthesis tasks.
- • 4-channel mixer expands routing options considerably.
- • Compact 20HP footprint maximizes Eurorack space efficiency.
- • Remarkably affordable, offering exceptional value for its capabilities.
CONS
- • Plastic construction feels less robust than higher-end modules.
- • Limited curve shaping compared to dedicated envelope generators.
- • Trigger outputs may lack the precision of more expensive counterparts.
Product Video
Key Features
Type
Function Generator / CV Processor
Stages
2 (AD, AHD, LFO)
HP Width
20
Depth
24 mm
Power Draw
60 mA (+12V) / 50 mA (-12V)
CV Outputs
2 (Attack, Decay, Loop) + 4 (Signal Outputs) + 3 (Mixer Outputs)
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Frequently Asked Questions
While it’s primarily an envelope/LFO generator, clever routing with the mixer and CV inputs can achieve basic stepped sequences, though it's not its forte.
It changes the rate at which the function generator's output changes, ranging from a slow, logarithmic rise to a more abrupt, exponential response, significantly impacting the tone and movement.
Absolutely; it allows you to combine the function generator outputs with external CV signals or audio, creating complex modulation patterns or unique sound textures.
