- XMOS is a premier provider of voice and music connectivity and control ICs. Our XS1 xCORE Multicore Microcontroller solutions have been the driving force behind the highest quality consumer, studio and broadcast audio equipment from over 200 vendors. Now on its second generation, the xCORE-200 family of Multicore Microcontrollers is pushing the boundaries of quality and integration - delivering premium quality music, and the most comprehensive Voice User Interface (VUI) controller solutions for IoT devices.