R-120 Random CV

R-120 Random CV for Eurorack / Doepfer A100 system.

From top:
input trig/gate + LED
random voltage center knob + input CV jack
random voltage spread knob + input CV jack
quantization mode knob + LED
random CV output

Rising edge of input trig/gate generates random output voltage according to center, spread and quantize settings.
Center and spread can be set in range 0-5V, output CV is distributed around center symmetrically (under and above).
Output random CV can be raw (unquantized – knob CCW) or quantized in 16 modes

Jumper settings:
top jumper allows generation of repeating CV for consecutive trigs (jumper set) or forces output to generate different CVs for each trig (if spread is wide enough, jumper removed)
bottom jumper allows „oveflowing“ CV (jumper set) or keeps CV in current range (jumper removed).
Imagine 2-octave spread and center set to 0V: jumper removed causes generating CV in most bottom octave only (0-1V). Jumper set allows generation in most bottom octave (0-1V) AND in most top octave (overflowed CVs – 4-5V). Similar overflowing can occurs over top of range if center is set high.


  • 25 mA +12V
  • ? mA -12V
  • 0 mA 5V
  • 45 mm deep
  • Ø 4.60 (5 Votes) Average Rating

This Module is currently available.

$67 Price in € submitted Jul 24th 2016, 02:32 by heinrich.himmelwasser | last Change Oct 5th 2016, 21:13 by acgenerator