I should have gone into what the potential uses are for this. It is not a synth module, this is from the pre CV filter days. You could go the VCA route but I wouldn’t go to the expense of going in that direction because i would be using this between a sound source and a recorder’s onboard pre, if that.
The impedance is 100 ohms with the right connectors this would mate well with a good microphone. Something like this would be used to record Delias lampshade, water, room tone or some other sound in movement
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Gino Wong Birgelo
BSComm, BSEE, CG, ReRED, CSEC