Sonova Holding AG engages in the manufacture of innovative hearing care solutions. It operates through Hearing Instruments and Cochlear Implants segments. The Hearing Instruments segment develops and sells hearing instruments. The Cochlear Implants segment manufactures and distributes hearing implants. Its products include Phonak, Unitron, Connect Hearing, and Advanced Bionics. The company was founded by Andreas E. Rihs, Beda Diethelm, and Hans-Ueli Rihs in 1985 and is headquartered in StÃ¤fa, Switzerland.