Description

A*B+C is the ultimate utility for audio and control voltage. It performs multiplication, addition, and attenuation, providing a simple way to create complex signal interactions and timbres.

It is formed by two channels, each of which takes two input signals (A and B), multiplies them (A × B), and then adds a third signal (C) to the result. By combining different blocks, many functions can be achieved:

Audio Processing:

• Four-quadrant amplitude modulation (ring modulation)
• Linear VCA
• Signal mixer
• 2x gain amplifier
• Phase inverter
• Attenuator

CV Processing:

• Voltage-controlled attenuator
• CV mixer
• Attenuator
• Inverter
• VCA
• DC generator

Features:

• DC Coupled
• Signal LED Indicators
• B and C INs normalled to 5V

Specs: 

• Width: 6HP
• Depth: DIY version 35 mm
• Power Consumption: +12V: 50mA, -12V: 50mA
• Designed, kits prepared and assembled in Barcelona.

A*B+C – Build Document | User Manual