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Behringer System 55 Complete Modular Synth

Manufacturer: Behringer
SKU: 450692
Complete "System 55" Modular Synthesizer with 38 Modules, MIDI-to-CV Converter and 2 EURORACK GO cases
Availability: Backorder - Contact for ETA
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The first System 55, 35 and 15 synth modules came out in the early 70's and tended to be extremely expensive. They were mainly all discrete transistor designs as op-amps at the time were very high cost.

The discrete circuitry gave the modules a very distinctive sound and were used by artists like Keith Emerson, Stevie Wonder, Tangerine Dream and so many more, giving us some of the greatest records we’ve ever heard. Modular synths were a landmark development in electronic music and today, it’s about to get better.


  • Pre-assembled ”SYSTEM 55“ modular synthesizer with 38 vintage sounding modules from the ’70s
  • 1x 914 FIXED FILTER BANK with 12 active bandpass filters ranging from 125 Hz - 5.6 kHz and LP/HP filters
  • 1x 923 FILTERS modules with 6 dB low and high pass filters and white/pink noise sources
  • 1x 992 CONTROL VOLTAGES module allows CV mixing and switching with 1 inverting attenuator
  • 5x 902 VOLTAGE CONTROLLED AMPLIFIER with 3 summed CV inputs and dual audio inputs and outputs
  • 4x 911 ENVELOPE GENERATORS with S-trig inputs and CV outputs
  • 1x 911A DUAL TRIGGER DELAY module with S-trig input and output
  • 2x 921A OSCILLATOR DRIVER with 6x 921B VCOs and 1x 921 VCO gives you 7 fully featured voices
  • 1x 960 SEQUENTIAL CONTROLLER module provides up to 24-step sequences in 8 steps with 3 rows
  • 1x CM1A MIDI to CV converter enables control by MIDI keyboards or DAW, V-trig or S-trig outputs
  • 3x CP3A-O module allows CV mixing and switching for the VCOs with 1 attenuator
  • 3x CP3A-M 4 input mixer with master level, 4 outputs and 2 sets of 4 multiples
  • 2x 995 ATTENUATORS modules with 3 linked passive attenuators
  • 1x 903A RANDOM SIGNAL GENERATOR module provides dual white and pink noise sources
  • 1x CP35 ATTENUATORS module with 4 linked attenuators, 2 sets of 4 multiples and reference voltages
  • 1x 961 INTERFACE module converts multiple V-trig to S-trig for compatibility with other Eurorack modules
  • 1x 962 SEQUENTIAL SWITCH module expands the 960 module into a 24 step sequencer
  • 1x BP28, 2x BP56 and 2x BP2 blanks panels for a total of 144HP expansion space
  • 1x CM1A MIDI-to-CV converter enables control via MIDI keyboards or DAW, V-trig or S-trig outputs
  • 2x EURORACK GO cases including PSUs
  • 2x EURORACK GO BRACKETS to link the 2 EURORACK GO cases together for easy patching


Voltage Control (pitch)

  • Source: Destination
  • External MIDI Keyboard – MIDI Out: CM1A MIDI Interface MIDI In
  • CM1A CV Output: 921A Frequency Input
  • 21A Frequency Output: 921B Frequency Link (in series)


  • 921B Waveform Outputs (three of four): CP3A-M Inputs
  • CP3A-M Output: 904A Signal Input
  • 904A Signal Output: 902 Signal Input
  • 902 Signal Output: Your mixer/amplifier/DAW

Voltage Control (amplitude)

  • CM1A s-trigger Output: Multiple
  • Multiple Output (three of): 2 x 911 s-trigger Input & 911A s-trigger Input
  • 911A Output: 3rd 911
  • 1st 911 Output: 1st 902 Control Input

Voltage Control (modulation)

  • 2nd 911 Output: 904A Control Input
  • 921 Aux Sine Output: 2nd 902 Signal Input
  • 2nd 902 VCA Signal Output: CP3A-O Input 4
  • CP3A-O Outputs: 921B DC Mod Input (three of )
  • 3rd 911 Output: 2nd 902 Control Input

Watch: Introducing the Behringer SYSTEM-15/35/55


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