10-slot chassis for 500-series modules Lightweight aluminum enclosure; steel M3 threads No-noise, high-frequency switching power supply, 90-250V Overload and short-circuit protection Gold-plated XLR inputs and outputs dSUb I/O Feed Switch. Mix one channel into another without cables 500mA of power per slot 48V phantom power Power-rail LED indication Comes with removable rack ears and one blank panel