The Behringer Powerplay 16 P16-D 16-Channel Digital Ultranet Distributorconnects to the Behringer P16-I Input Module (sold separately) and provides 8 additional Ultranet connections (6 are available on the P16-I), allowing for more P16-M monitor mixers (sold separately) to be used in the Powerplay 16 monitor mixing system. The P16-D Digital Ultranet Distributor sends bus power and signal to the connected P16-M monitor mixers, and LEDs indicate both input and output signals. The P16-D 16-Channel Digital Ultranet Distributor effectively expands the system for use with large bands, vocal groups, choirs and more.