Befaco A * B + C is a two-channel VC offset four-quadrant multiplier that acts as a dual ring modulator, dual VCA, and four-channel mixer.
Each channel can perform an analog multiplier on the two signals (A and B) and add an offset (C).
The A input is used as is. The B input is multiplied by A after passing through an amplifyable attenuverter of -2 to 2 times. Since 5V is internally connected to the B input, if it is not patched to B, A will be attenuated (amplification is also possible) and sent to the addition section.
Signals that pass through the multiplication section add the C input.Actually, after C input, the signal that has passed through the Attenu barter (-1x to 1x) is added. Since 10V is internally connected to the C input, if it is not patched to C, it will be offset to the output from the multiplication section and output.
Since OUT A is internally connected to OUT B, if it is not patched to OUT A, A and B will be mixed and output from OUT B.
Other main features are as follows
- 2-channel bipolar VCA
- Equipped with adjustable VC offset for each channel
- AM and ring modulation capabilities
- Can also be used as a 4-channel mixer due to output normalization