The C44-plus is a 19“/1RU unit, which converts 4 two-channel CAT5 AES Artist matrix ports to 4 powered beltpack lines; up to 16 beltpacks can be daisy-chained on each line, one single C44-plus can power up to 38 beltpacks; 8 Analogue 4-wire I/O´sprovide every partyline channelfor interface to other matrix or non-matrix systems; the C44-plus provides short-circuit protection on each powered line individually and an automatic detection and switching between 60 Ohm /110 Ohm cables. Separate DC inputs and outputs at the rear of the unit can be used to provide redundant power; ioncluded USB-Interface and "Audio Assignment Software" on CD to manage the internal audio matrix for stand alone use. The software supports Windows XP and Windows 7.