RYO Optodist

Name: Optodist
Brand: RYO

OptoVCA with distortion and LED limiting.

6 HP Eurorack module

Optodist is an optocoupler-based VCA that can operate cleanly or add overdrive distortion, with a four-LED soft-clipping limiter.

Features

Exponential VCA with gain-CV attenuation and manual initial-level/overdrive control.
Four-LED limiter circuit soft-clips the signal.
Accepts DC and AC signals.

Signal In Level— Sets the audio input level; increasing it can contribute to distortion.
Gain— Sets the VCA's initial open level and/or overdrive gain; above approximately 50% it increasingly boosts and distorts the signal.
Gain CV Input— Control-voltage input for the exponential VCA; accepts 0–8 V by default and is scaled by the Gain CV Level control.
Gain CV Level— Attenuates the control voltage applied to the Gain CV Input.
Limiter— Engages or disengages the four-LED soft-clipping circuit.
Audio Output— Processed audio output.
Audio Input— Audio input; its level is set by the Signal In Level control.
Limiter LED 3— One of four visible LEDs in the limiter circuit that soft-clips the audio signal.
Limiter LED 1— One of four visible LEDs in the limiter circuit that soft-clips the audio signal.
Limiter LED 4— One of four visible LEDs in the limiter circuit that soft-clips the audio signal.
Gain Indicator— Indicates gain or the VCA initial level.
Limiter LED 2— One of four visible LEDs in the limiter circuit that soft-clips the audio signal.