dreadbox-eudemonia

Dreadbox Eudemonia

Analog filter-mixer-VCA: 3-in mixer, dual series filters, exponential VCA

10 HP Eurorack module

The Dreadbox Eudemonia is an analog signal processor that combines a 3-to-1 mixer, dual filters in series (24dB/oct resonant low-pass and 18dB/oct non-resonant high-pass), and an exponential VCA into a compact 10HP module. Audio enters via three mixer inputs, is blended using dedicated level knobs, then passes through the LP and HP filters before reaching the VCA output stage. Four CV inputs provide voltage control over the LP cutoff (with 1V/oct tracking and a separate bipolar CV input), HP cutoff, and VCA amplitude. LED indicators show signal presence at the input and clipping at the output.

Features

  • 3-to-1 analog audio mixer with independent level controls
  • 24dB/oct (4-pole) resonant low-pass filter
  • 18dB/oct (3-pole) non-resonant high-pass filter
  • Dual filters in series for LP+HP (bandpass-capable) filtering
  • Exponential VCA with smooth dynamics response
  • Self-oscillating LP filter usable as sine oscillator
  • 1V/oct tracking input for precise filter pitch control
  • Three dedicated CV inputs: LP cutoff, HP cutoff, VCA
  • Separate 1V/OCT and bipolar CV inputs for LP filter
  • LED indicators for input presence and output clipping
  • VCA LED changes orange to red above +/-5V output
  • Compact 10HP form factor

Controls & Jacks (17)

  • LP CV In
  • Mixer In 1
  • Mixer In 2
  • Mixer In 3
  • LP Cutoff
  • HP Cutoff
  • Resonance
  • VCA Level
  • 1V/OCT In
  • HP CV In
  • VCA CV In
  • Output
  • Input LED
  • VCA LED
  • Level 3
  • Level 1
  • Level 2

How-To Guides

  • Classic Subtractive Voice
  • Bandpass Filter Effect
  • Self-Oscillating Filter as Sine Source
  • Tremolo and VCA Ducking
  • Three-Oscillator Mix with Filtering

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

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