Frequency Central System X Amplifier

Like all "System X" modules by Frequency Central the circuit of this retro VCA originates in the Roland 100m modular system. A two-channel mixer is integrated, the VCA has two characteristics and two outputs with different audio levels.

All inputs are dual: two adjustable audio inputs save yourselves a mixer, two CV inputs with attenuators allow for simultaneous tremolo and modulation by an envelope for instance.
The "initial gain" potentiometer allows you for opening the VCA manually. The characteristic of the System X VCA can be switched between exponential and linear.
The module has two audio outputs: HIGH carries a signal with the high modular level, LOW has line level which is great for connecting directly to your studio gear.