Phonak: A History of Innovation Phonak is a leader and innovator in digital hearing care. Founded in 1947 in Switzerland, Phonak quickly emerged as a leading developer of early electronic hearing aids. In 2007, the holding company renamed itself Sonova Group. In 2017, Phonak introduced the first hearing aid to feature a built-in lithium-ion rechargeable battery providing all-day power, the Audéo Belong B-R. In 2018, Phonak introduced the first full-featured Bluetooth hearing aid …