The PSU22/1 is the UMD power supply unit. A single serial connection from a Controller provides UMD data and the signal is distributed along with power to up to 96 UMD via the RJ45 connections on the back.
When we started designing our newest OB truck, we were looking for the smallest form audio monitoring unit we could find, that would be flexible and easy to use for our VT operators, and the new MPA1 Solo SDI was just the ticket.
Paul Fournier, Head of Audio at NEP UK