// Not QDial::valueChanged, as we call setValue() all the time.
connect(ui->gainstaging_knob, &QAbstractSlider::sliderMoved, this, &MainWindow::gain_staging_knob_changed);
// Not QDial::valueChanged, as we call setValue() all the time.
connect(ui->gainstaging_knob, &QAbstractSlider::sliderMoved, this, &MainWindow::gain_staging_knob_changed);