4-Quadrant Multiplier

The X is a modulator for universal use. The two input voltages X and Y are multiplied together. In comparison to a VCA (2-quadrant operation), a multiplier also works with negative control voltages, causing a polarity (plus/minus) inversion of the modulated signal (4-quadrants). This can be used for ring/amplitude modulation. In addition, one input (X) is equipped with a switchable exponential converter for VCA-like applications and more. The X input also has a manual level control to amplify or attenuate the input signal, an inversion switch and an adjustable offset, which is added to the X input. By using these two control knobs, one has a ‘dry/wet’ style control over the Y input and the modulated signal.
The output (W out) is internally attenuated to ensure that the product voltage of X×Y is almost in the range between the ±12V voltage supply.

• Working both with audio and CV signals
• Ring / amplitude modulation
• Voltage controlled amplification
• Exponential conversion
• Wave shaping
• Dynamic expansion
• One input with adjustable offset voltage
• Easy to use
• Optional with banana or 3,5mm minijack

http://www.cg-products.de/module/x/

• 25 mA +12V
• ? mA -12V
• ? mA 5V
• 35 mm Depth

No info about availability.