dreadbox-utopia

Dreadbox Utopia

Four attenuinverters, mixer, LFO, and Pulserizer in one

10 HP Eurorack module

The Dreadbox Utopia is a compact Eurorack utility module combining four attenuinverters, a four-channel mixer, a Pulserizer (compressed VCA-style processor), an offset generator, and a square-wave LFO. It is designed to be a multi-purpose signal manipulation tool with hidden functions including a splitter and square wave LFO, making it a versatile workhorse for shaping, mixing, and modulating signals in a modular system.

Features

  • Four attenuinverters with individual inputs, amount knobs, and outputs
  • Four-channel mixer with inputs normalised to attenuinverter outputs
  • Three identical mixer sections
  • Pulserizer — a compressed VCA-style processor with input normalised to mixer output
  • Pulserizer output sends +/-5V
  • Offset generator with knob and output sending +/-10V, normalised to mixer unless dummy cable inserted
  • LFO with triangle output sending +/-5V, normalised to mixer unless dummy cable inserted
  • LFO CV input accepting +/-5V for rate modulation
  • Hidden splitter function
  • Hidden square wave LFO function
  • Dummy cable technique to isolate LFO or Offset from mixer routing
  • Attenuinverters support both attenuation and inversion of signals

Controls & Jacks (26)

  • Pulserizer Input— Pulserizer input, normalised to mixer output
  • Pulserizer Output— Pulserizer output, sends +/-5V
  • Attenuinverter 2 Input— Input for attenuinverter channel 2
  • Mixer Output— Mixed audio output
  • Mixer Input A— Mixer input A, normalised to attenuinverter 1 output
  • Attenuinverter 3 Output— Output from attenuinverter channel 3
  • Mixer Input D— Mixer input D, normalised to attenuinverter 4 output
  • Attenuinverter 1 Input— Input for attenuinverter channel 1
  • Attenuinverter 1 Output— Output from attenuinverter channel 1
  • Attenuinverter 4 Output— Output from attenuinverter channel 4
  • Offset CV Input— CV input for offset control, accepts +/-5V
  • Attenuinverter 3 Input— Input for attenuinverter channel 3
  • Mixer Input B— Mixer input B, normalised to attenuinverter 2 output
  • Attenuinverter 2 Output— Output from attenuinverter channel 2
  • Offset Output— Offset output, sends +/-10V unless something is patched to Offset CV Input
  • Attenuinverter 3 Amount— Sets the amount of attenuinverter channel 3
  • Attenuinverter 4 Input— Input for attenuinverter channel 4
  • LFO CV Input— LFO CV input, accepts +/-5V
  • Mixer Input C— Mixer input C, normalised to attenuinverter 3 output
  • Attenuinverter 4 Amount— Sets the amount of attenuinverter channel 4
  • Attenuinverter 2 Amount— Sets the amount of attenuinverter channel 2
  • Attenuinverter 1 Amount— Sets the amount of attenuinverter channel 1
  • Offset Amount— Sets the offset of the Pulserizer
  • LFO Triangle Output— LFO triangle wave output, sends +/-5V unless something is patched to LFO CV Input
  • LFO Rate— Sets the LFO rate
  • CV/AUDIO

How-To Guides

  • Basic Signal Attenuation
  • CV Signal Inversion
  • Four-Channel Signal Mixer
  • Isolated LFO Modulation
  • Tempo-Synced or Voltage-Controlled LFO
  • DC Offset Voltage Source
  • Pulserizer as Compressed VCA
  • Full Normalised Signal Chain
  • Signal Splitter / Multiple
  • Generative Modulation Blender

Explore the interactive Utopia panel on BleepDex — tap any control to learn what it does.

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