PreSonus Central Station PLUS monitoring controllerIntroducing the PreSonus Central Station PLUS When you want to switch between multiple sets of monitors and multiple analog and digital sources to hear exactly what your mix sounds like, with no coloration, you need the PreSonus Central Station PLUS professional monitor controller. Its audiophile quality, passive signal path, with no op amps or ICs, and its S PDIF inputs with 24 bit, 192 kHz D A converters ensure the sonic transparency that pros need.