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Sonova (Sonova Holding AG) – Phonak (Phonak Holding AG) before 31 July 2007 – is a Swiss company that specializes in hearing and wireless systems. Sonova develops and markets hearing care solutions in two segments, hearing aids and cochlear implants. The group operates through its core business brands Phonak, Unitron, Advanced Bionics and Connect Hearing.

On August 1, 2007 Phonak AG officially changed its name to Sonova Holding AG.