# Sonova (Phonak, Unitron, Hansaton)

> <p><strong>Known for:</strong> World's largest hearing-aid maker by revenue. Acquired Sennheiser's consumer audio business in 2022 — a deliberate move into the consumer hearables/over-the-counter hearing-device category that's reshaping the industry.</p>

**Ownership:** Listed (SIX Swiss Exchange). Stäfa, Switzerland since 1947.

**Employees:** ~17,000

**Key products:** Phonak, Unitron, Hansaton hearing aids; Sennheiser consumer audio (acquired 2022); Advanced Bionics cochlear implants

**Key markets:** Global — hearing aids in 100+ countries via clinical channels

**Known for:** World's largest hearing-aid maker by revenue. Acquired Sennheiser's consumer audio business in 2022 — a deliberate move into the consumer hearables/over-the-counter hearing-device category that's reshaping the industry.

https://www.sonova.com