The D SERIES-NVC2 is a rotary control that provides volume control and muting on one or two Dante/AES67 network audio channels. One or two mono audio sources or one stereo audio source may be routed to the -NVC2, then from the -NVC2 to a network destination, typically a power amplifier. Audio level adjustment is performed digitally in the -NVC2. The installer has the option of setting the unit to sum the left and right channels of a stereo source with the mono sum feeding both outputs. The level of each output channel may be adjusted separately or together. If two or more user adjustment controls are desired in the same zone, an RDL D-NMC1R may be used to remote control the -NVC2, allowing adjustment by either unit. Network bandwidth typically supports up to 4 remote controls per zone.