Fredenstein Bento 10S, 10-slot rack, 19"" module carrier, For Fredenstein Series 500 modules, Internal 90- 240 V AC power supply with +/- 16 V /+48 V, Built-in audio routing: modules can be daisy-chained via switches on the back panel, Intelligent voltage distribution, Energy efficient, Extremely low noise integrated power supply, Incl. 19"" rackmount