Probability Router 125


Also available in The Probability Router Bundle!

Introduce some controlled chaos into your creations - great for unpredictable drum sequencers and drone machines! Probability Router 125 takes a mono or stereo input signal and randomly sends it to one of the five outputs. For example, you could route a trigger to different drum modules, or an audio signal through different effect chains.

A new output is selected every time the Trigger input receives a positive signal or the trigger button is pressed. The probability of each output is set by the Probability sliders. Only the relative positions of the sliders matter, so setting them all to 1 is the same as setting them all to 100. Each probability can be modulated with the corresponding CV In jack and knob. Enabling the Force Switch button selects a new output every time, so that the same output is never chosen two times in a row.

The A(ttack) and R(release) sliders set the time it takes for the selected output to open and for a non-selected output to close. Quick (above zero) attack & release times help prevent clicks in audio when switching outputs, while longer ones can create interesting movement in drone/atmospheric sound generators. You probably want to set both values to OFF when routing trigger signals. With bigger A & R values, the signal can exist in multiple outputs at once.

The Up & Down buttons cycle through the outputs manually, and you can also click the output level meters to switch to a specific output. The switch next to the Trigger jack enables/disables incoming trigger signals. These can be handy when you are in the building/debugging phase and want to test different signal paths.

For mono operation, connect either of the input jacks, which will be then routed to both L & R jacks of the active output. Outputs with neither jack connected will be left out of the random selection.

Tip: You can also set the attack & release times by (double)clicking the sliders or the value display. Type in the time value in ms, or add "s" for seconds.

Check the module in action at