The APB-D116 R-D is an active 19″ rack, AudioPressBox Drive Unit, 1 LINE Input, 1-channel Dante Interface, 16 Line/MIC Outputs, 1 buffered Output for up to 3 AudioPressBox expanders
The APB-D216 R-D is an active 19″ rack, AudioPressBox Drive Unit, 2 LINE Inputs, 2-channel Dante Interface, 16 Line/MIC Outputs, 2 buffered Outputs for up to 6 AudioPressBox expanders.