The Wohler ARS-21C is a 1RU rackmount switchable audio router, with 10 mono inputs on a set of 10 phoenix connectors, set up as two independent groups of 5 assigned as A and B. Any or all of the inputs may be routed to a pair of independent A and B balanced XLR outputs via a set of 10 front panel selector switches, also grouped A and B. This rugged, streamlined device is a professional solution for installation routing application requirements.