befaco/noise-plethora

Noise Plethora

Befaco

Multitimbral noise monster with three digital sound generators followed by three analog multimode filters. First two channels choose from dozens of algorithms with two CV controls each; third channel has gritty noise, white noise, and filtered outputs.685

Capabilities 4

Multimode Filtermultimode-filter
Three OTA-based analog multimode filters (one per generator), switchable between LP, BP, HP with CV-controlled cutoff and resonance.685
Noise Generatornoise-generator
685
Random Sourcerandom-source
685
Vcfvcf
685

Jacks 11 — 10 in / 1 out

NameSignalVoltageDescription
Inputs (10)
A Filter Cutoff CVcv—685
A Program CVcv—Selects between programs on the selected Bank for Generator A.685
A X CVcv≤10VCV input for X parameter on Generator A. Summed with X knob. 10Vp-p range; higher voltages ignored.685
A Y CVcv≤10VCV input for Y parameter on Generator A. Summed with Y knob. 10Vp-p range; higher voltages ignored.685
B Filter Cutoff CVcv—685
B Program CVcv—Selects between programs on the selected Bank for Generator B.685
B X CVcv≤10VCV input for X parameter on Generator B. Summed with X knob. 10Vp-p range; higher voltages ignored.685
B Y CVcv≤10VCV input for Y parameter on Generator B. Summed with Y knob. 10Vp-p range; higher voltages ignored.685
C Filter Cutoff CVcv—685
Grit Qty CVcv≤10VCV input for Grit Quantity on Generator C. Summed with Grit Qty knob. 10Vp-p range.685
Outputs (1)
White Noise Outputaudio—Direct white noise output from Generator C, without filtering.685

Parameters 19

NameTypeRangeBehavior
A Filter Cutoffknob—685
A Filter Cutoff CV Attenuatorknob—685
A Filter Modeswitch—Switches the analog multimode filter for Generator A between Low-Pass, Band-Pass, and High-Pass modes.685
A Filter Resonanceknob—685
A Xknob—Algorithm-dependent X parameter for Generator A. CV input is summed with knob position. Meaning changes per algorithm (e.g. frequency, modulation rate, etc.).685
A Yknob—Algorithm-dependent Y parameter for Generator A. CV input is summed with knob position. Meaning changes per algorithm.685
B Filter Cutoffknob—685
B Filter Cutoff CV Attenuatorknob—685
B Filter Modeswitch—Switches the analog multimode filter for Generator B between Low-Pass, Band-Pass, and High-Pass modes.685
B Filter Resonanceknob—685
B Xknob—Algorithm-dependent X parameter for Generator B. CV input is summed with knob position. Meaning changes per algorithm.685
B Yknob—Algorithm-dependent Y parameter for Generator B. CV input is summed with knob position. Meaning changes per algorithm.685
C Filter Cutoffknob—685
C Filter Cutoff CV Attenuatorknob—685
C Filter Modeswitch—Switches the analog multimode filter for Generator C between Low-Pass, Band-Pass, and High-Pass modes.685
C Filter Resonanceknob—685
Grit Quantityknob—Controls the quantity of gritty granular noise. CV input is summed with the knob position. CV range 10Vp-p.685
Program/Bank Displaymenu_setting—Shows the current Program or Bank number. The dot at the bottom right corner indicates which Generator (A or B) is selected.685
Program/Bank Selectorknob—Turn to select programs within the current bank. Push quickly to toggle between Generator A and B. Hold for 1 second to access Bank selection (Bank LED blinks). After a couple of seconds of inactivity, returns to program selection.685

Firmware history 2 versions

VersionReleasedNotes
1.5—685
1.1—685

References 2

  1. [685]
    Befaco Noise Plethora Manualmanual
    source 685 canonical ↗ archived ↗
    ⚠ verified 2026-05-21 · manufacturer changed since last verified
  2. [686]
    Befaco Noise Plethora product pageproduct_page
    source 686 canonical ↗ archived ↗
    ⚠ verified 2026-05-21 · manufacturer changed since last verified