The TSD-ZDC is a universal impedance divider/combiner for passively summing or splitting of mic or line level signals. Features include four unbalanced 10K and four balanced 150 ohms inputs/outputs that may be passively split or combined in any arrangement.Typical applications include passive summation of multiple 150 ohms mics or stereo 10 ohm K sources and passive splitting of 150 ohm or 10K ohms input sources to multiple outputs.To ease contractor use and installation the TSD-ZDC includes individual ground connectors for each input/ output.The unit's compact footprint allows for easy standalone mounting or an optional rack mount adapter may be used to facilitate up to (4) TSD devices.