The vca – Erica Synths EDU DIY Dual VCA Eurorack Module Kit User Manual
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THE
VCA
The VCA is one of the fundamental building blocks of any modular synthesizer. No rack is
really complete without it – which is why I came up with this simple circuit for my own
modular system. It’s a fairly basic, yet super e
ffi
cient little VCA made of just a couple
transistors and op amps.
Eagle-eyed readers might spot that some resistor values have changed compared to the version
I showed o
ff
in my VCA video. Unfortunately, explaining that was out of scope for this (already
super long) manual. But in e
ff
ect,
those changes reduce the amount of noise on the output
and improve the linearity of the VCA’s CV response
.
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