Play-through volume control To adjust the play-through volume, drag this slider. The play-through hardware might be disabled at this time, in order to prevent feedback between the internal microphone and speaker. soundInputDeviceName Play-through volume control The soundInputDeviceName sound input device does not support play-through. Play-through volume control To adjust the play-through volume, drag this slider. Currently no sound input is in progress. Play-through volume control To adjust the play-through volume, drag this slider. Currently no sound input is in progress. To start sound check, click the Sound Check button. Play-through volume control To adjust the play-through volume, drag this slider.