Behringer ABACUS Analog Music Computer for Eurorack

Buchla’s legendary 257 and 281 analog synthesizers are considered classics of their genre, implemented in a wide range of musical applications. The Behringer ABACUS is modelled after these original instruments, featuring an array of linear, logarithmic and exponential triggered or continuous functions.

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Behringer ABACUS Analog Music Computer for Eurorack

Buchla’s legendary 257 and 281 analog synthesizers are classics of their genre. In fact, you will hear them in a wide range of musical applications. The Behringer ABACUS takes its inspiration from these original instruments, featuring an array of linear, logarithmic and exponential triggered or continuous functions.

Modulate and Push the Tempo

The ABACUS can generate musical envelopes or LFO signals up to 25 minutes in length. Also, it can generate them as fast as 1 kHz. Designed for use with other modules, it also allows you to change the modulation depth, and modulate backwards. You can create even more musical events by manipulating the tempo.

Unlimited Creativity

By manipulating the ABACUS’ control knobs, incoming signals can be amplified, attenuated, integrated or inverted for unlimited creativity. Also, implement totally unique and crazy warp effects like lag, slew or portamento to control voltages. Specifically, it’s perfect for use with a sequencer, or synth keyboard. You are able to combine up to 4 control voltages and generate even more complex modulations.

ABACUS Key Highlights:

  • Algebraic sound processor modeled after Buchla’s* models 257 and 281 from the ’60s
  • Perform wide range of linear, logarithmic and exponential triggered or continuous functions
  • Generate musical envelopes or LFO signals up to 25 minutes and as fast as 1 kHz
  • Algebraic sound processor modeled after Buchla’s* models 257 and 281 from the ’60s
  • Perform wide range of linear, logarithmic and exponential triggered or continuous functions
  • Generate musical envelopes or LFO signals up to 25 minutes and as fast as 1 kHz
  • Change the depth of modulation or even modulate backwards
  • Create musical events such as ramping up or down in tempo
  • Amplify, attenuate, integrate or invert incoming signals for unlimited creativity
  • Apply lag, slew or portamento to control voltages for unique warped effects
  • Initiate musical events upon sensing motion in the system
  • Create note division and flam for amazing effects
  • Generate complex modulations by combining up to 4 CVs
  • LEDs indicate activity on all outputs for visual monitoring
  • Eurorack specs: 20 HP, 60 mA +12 V, 50 mA -12 V

Inputs:
– CV 1-4, Trig 1-4, Rise 1 & 4, Fall 1 & 4
– Both 1 & 4, Cycle 1 & 4: 3.5 mm jack

Outputs:
– CV 1-4, OR, SUM, INV, ƒ1 & 4, 1 EOR, 4 EOC
– 3.5 mm jack

Controls:
– 1 & 4 Rise, 1 & 4 Fall, 1 & 4 Response knobs
– 1 – 4 attenuverter knobs
– 1 & 4 Cycle buttons

Impedances:
– Rise & Both CVs: 100 kΩ
– Fall CVs: 33 kΩ
– CV Inputs 1 & 4: 33 kΩ
– CV Inputs 2 & 3: 75 kΩ
– Trigger Inputs: 100 kΩ
– Cycle Trigger Inputs: 50 kΩ
– Outputs 1-4, INV, SUM, OR: 680 Ω
– EOR/EOC: 2.2 kΩ
– ƒ 1 & 4: 100 Ω

Sensitivities:
– Trigger 1 & 4: 4 V minimum
– Cycle 1 & 4: 1.8 V minimum

Power Consumption:
– 60 mA +12 V / 50 mA -12 V

Dimensions:
– 20 hp
– 10 cm x 12.8 cm x 2.4 cm

Weight:
191 g

Packaged Weight:
284 g

For more information, please visit the manufacturer's website.