The SAPL is a random control voltages source for Eurorack modular systems. It is composed of two main sections, one that generates audio noises, in 4 different versions, and another which includes two specular random clock, random voltages, and clock sources.

Noise outputs are color coded, based on the noise colors, and include:

blue (+3dB/octspectrum)

white noise (0dB/octspectrum)

pink noise (-3dB/octspectrum)

red noise, a.k.a.brown or brownian (-6dB/octspectrum).

The random voltage and clock section featuresfour uncorrelatedrandom CV generation paths, divided in;

fluctuatingrandom voltage;

quantized random voltage with 2n stages tuned in semitones referred to 1V/octscale;

quantized random voltage with n+1 stages tuned in octaves referred to 1V/octscale;

non-quantized sample & hold.

It is also possible to set a probability distribution with a potentiometer, and apply (or do not apply) the chosen distribution setting to each of the four paths independently.

Furthermore, each of the two random sources section features an independent built-inclock generator, with clock output and random clock output, which can be used in more than or less than mode. It is possible to use an external clock signal as a clock source, bypassing the built-in one. In addition to that, it is also possible to hand trigger the clock via a manual sample & hold button, which can be also modulated by gate signals.

true analog random/noise generation with 4 stages of independent and uncorrelated thermal noise

8 random voltages and up to 4 random clocks

continuous fluctuating voltages

change quantization stages with gradual transition for more usable results

stage-assignable probability distribution

built-in clock generators

sample & hold manual buttons and inputs for realtime performance and ease of interaction

analog design