A 1U rack-mount DMX and power splitter for distributing DMX512 signals and operating voltage. The unit provides one 5-pin XLR DMX input, four independently driven 5-pin XLR DMX outputs, and a DMX feed-through output for connecting an additional splitter. It supports RDM, switchable RDM filtering and termination, galvanically isolated inputs and outputs, status indicators for each output, and a maximum power output of 16 A.