Dual VCA

This Dual VCA module features two high quality analogue VCA with low noise and low CV breakthrough.

If the output socket of channel one is unused then that signal will be mixed with the output channel two.

The first VCA can simply be taken out of the mixing process by inserting a jack lead into its respective output socket.

Each VCA has two controls.
•Firstly, there is GAIN, a fixed bias to set the initial gain of the VCA, it can also be used a volume control.
•Secondly, the CV pot allows you to alter the sensitivity of the external CV that controls the VCA's gain. The pot is a 'reversible attenuator, so you are able to control not only the depth of the modulation but also the polarity. With the CV pot set straight up no CV signal reaches the VCA. With it fully right the CV is applied so that positive CVs increase the gain of the VCA. With the pot fully left then increasing positive CVs reduce the gain of the VCA.

Each VCA can be either direct coupled (DC) or high pass filtered (AC). The former allows DC and low frequency signals to be processed. While the latter provides a DC block to process only alternating audio frequencies.

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