Hi, in his build report of the all-in-one Midibox CV PCB rvlt reported a problem when using Yamaha CS-series mono synthesizers (CS-40 and below). I'm opening this as a new thread because else the posting may get lost without any notice: It does interest me, too, as I own a Yamaha CS-30 (but I haven't built my Midibox CV yet). According to sequencer.de the cv/gate data is: So Gate Polarity should be set to negative and Output Curve is Hz/V. As far as I understand the documen