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Widex is the only company added to the VAâs new roster of suppliers, who were notified of their selection on August 20. ReSound, Oticon, Phonak, Siemens, and Starkey Hearing Technologies were also chosen by the VA in 2009, when it last solicited bids from hearing aid makers.
Major Hearing Aid Manufacturers. 1  Phonak - One of the worlds leading hearing aid manufacturers, Phonak is a Swiss company known for cutting-edge technology and style. Phonak is owned by Sonova Holding AG who also owns Unitron Hearing. Unitron generally offers the same core technologies as Phonak but with fewer features and at low prices.