BUILT MODULE – ST Modular – CION (CV Function Generator)

£95.99 (exc VAT)

ST Modular website



This listing is for a BUILT MODULE with power cable & mounting screws.


In stock


CV Generator with four connected Triangle LFOs

The rate of each LFO may be adjusted with the dedicated potentiometers. Each LFO signal is supplied on the four outputs on the bottom side of the module. Depending on the potentiometer settings also slopes or square-waves can be generated. Please refer to the demo video below.

The fours LFOs are connected to each other creating an LFO-chain. If the first LFO reaches its highest value, the second LFO starts to rise. And when the first output reaches its lowest voltage, the second channel starts to decrease and so on. Each potentiometer controls the time it takes for the LFO to reach its maximum voltage, which also controls the time it takes to reach 0 volts for its inverted counterpart (1&3 and 2&4). Simultaneously the pots control the time the other two LFOs hold their maximum voltage level.

Patching all LFOs into a VCO´s sound shaping functions you can create wave-like sounding effects that will repeat periodically. This module is very good for generating very slow cycles when the RATE switch is set to SLOW. Conversely, it can also generate fast cycles when the switch is set to FAST.

The state of each LFO is being indicated by the illuminated letters W A V E on top of the module. Each letter will light up when its dedicated LFO outputs a voltage.

• 4x LFO Out
• 4x LFO Rate
• Rate Switch
• Skiff friendly
• Wrong polarity protection
• Illuminated Wave-Logo


CV Function Generator

CION is something of a jack-of-all-trades. It can be a CV AD or ASD envelope, a basic filter, a distortion effect, a slew limiter or even a voltage controlled oscillator with waveshape.

The function generator offers an ATTACK and a DECAY potentiometer, which represent the attack and decay times, the positive or negative slew time or the rising and falling edges of an oscillation, depending on the application.
There is a CV input for ATTACK and DECAY. The rise and fall times are individually voltage controllable, but they can also be controlled together via the AD input. A shape knob lets you change the CV curve from exponential to logarithmic. The time range per cycle can be as fast as 3ms and last for up to 20 minutes depending on the position of the RANGE switch.

The TRIG socket is used to start the envelope via CV. This can also be done by the press of a push-button.
Connect any signal (CV or audio) to be processed to the INPUT jack. Insert a gate signal to add a sustain stage to the AD envelope.

If no external signal is available to trigger the envelope, the function generator can be set to loop mode by the CYCLE switch. When the switch is active, the envelope starts again from the beginning as soon as it reaches the end of a cycle. The CYCLE CV input activates or deactivates the cycle functionality depending on the switch position.

An End-Of-Cycle signal is available at the EOC socket.

• Attack & Decay Envelope
• Attack & Decay CV (also both simultaneously)
• Shape Control
• CV Processing via Input Socket
• Trigger Input
• Cycle Functionality with CV Control
• EOC Output
• LEDs indicate Activity on all Outputs
• Wrong Polarity Protection
• Skiff friendly


Additional information

Weight 150 g
Dimensions 128.5 × 20 × 4 mm

Synthesiser parts/components