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

£95.99 (exc VAT)

cion / cv function generator / 6 HP

CION embodies versatility, functioning as a CV AD or ASD envelope, basic filter, slew limiter, and even a voltage-controlled oscillator with variable waveshapes.


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


In stock


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

CION – Quick Start Guide


Build Docs 


Additional information

Weight 150 g
Dimensions 128.5 × 20 × 4 mm

Synthesiser parts/components