VCA board Posted on 11. February 2015 22:24 by iTist Comment The next step ist building the Voltage controlled amplifier (VCA). For this i use the well known LM13700. For my Polyphonic Synth Project (PSP) I need a fully voltage controlled module with 3 inputs. Here a first impression(board not fully populated) This entry was posted in Allgemein « Update poly synth controller 25-01-2015 Digital to analog board » Leave a Reply Cancel reply You must be logged in to post a comment.