dear boxers i've got a hard problem I've made the Aout-ng module of smash tv, in a midibox cv. I use a bipolar PSU -12V + 12v to supply aout ng on J3 (+12, gnd , -12v). i supply the core (completly stuffed) at J1 with gnd and +12V pin of the bipolar PSU. When in unipolar mode, i have the expected range (from zero to 10,67V). it's how i calibrated the gain before the opamp, using P1. Then i switched to bipolar mode, and set P9 (on channel CV1) to adjust the "middle" (in mb cv menu