Siemens Hearing Instruments
A Siemens hearing-aid business that became Sivantos, Inc. after Siemens AG sold its audiology operations in 2015.
Last updated August 24, 2026
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Overview
Siemens Hearing Instruments was the hearing-aid business associated with Siemens AG and its healthcare and audiology operations. It operated within Siemens Audiology Solutions, later referred to as the Siemens Audiology Group, and developed and supplied hearing aids primarily through hearing-care professionals rather than as a conventional direct-to-consumer electronics brand. The business served an international market and formed part of a broader portfolio that included the Siemens, Audio Service, Rexton, and A&M hearing-aid brands. The United States operation was based in Piscataway, New Jersey. Before the corporate separation, the affiliate supported manufacturing, research and development, sales, marketing, finance, and customer-care activities. The wider Sivantos organization supplied hearing-care professionals in more than 120 countries, giving the Siemens hearing-aid business a substantial international distribution and professional-services footprint. A major change occurred in 2015, when Siemens AG sold its hearing-aid business to EQT VI and Santo Holding GmbH. The business was separated from Siemens Audiology Solutions and renamed Sivantos, Inc. in the United States, while the global organization became Sivantos Group. This transaction ended the business's status as a Siemens-owned audiology operation, although Siemens-branded hearing aids remained part of the historical product and brand portfolio during the transition. The company was therefore both a product brand and a corporate operating business: Siemens was the consumer-facing name on hearing aids, while Siemens Hearing Instruments also described the associated organization and United States affiliate. After the 2015 divestiture, the corporate identity shifted toward Sivantos, and the Siemens name gradually receded from the market as the new owner developed its own multi-brand structure. In 2019, Sivantos Group combined with Widex, a hearing-aid company headquartered in Lynge, Denmark, to create WSA. Siemens Hearing Instruments is consequently best understood as a historical Siemens audiology brand and business rather than an independent active company today.
History
Siemens Hearing Instruments developed as part of Siemens AG's broader healthcare and audiology activities. Its corporate history is linked to Siemens Audiology Solutions, which was also described as the Siemens Audiology Group. Rather than operating only as a consumer brand, the business combined hearing-aid development and manufacture with professional distribution, sales, marketing, research and development, finance, and customer support. Its products were supplied through hearing-care professionals and specialist channels in international markets. The business formed part of a wider hearing-aid portfolio. The Siemens name was used on hearing aids, while the associated organization also maintained or distributed products under the Audio Service, Rexton, and A&M brands. In the United States, the operating affiliate was located in Piscataway, New Jersey, where its activities included manufacturing, research and development, sales, marketing, finance, and customer care. The parent group served hearing-care professionals in more than 120 countries. The decisive turning point came in 2015. Siemens AG sold its hearing-aid business to EQT VI and Santo Holding GmbH. The divestiture separated the audiology operation from Siemens Audiology Solutions and created the independently owned Sivantos Group. In the United States, Siemens Hearing Instruments changed its name to Sivantos, Inc. The transaction changed the legal and corporate identity of the business, while the Siemens name remained historically associated with products and market relationships during the transition. Following the sale, Sivantos developed as a multi-brand hearing-aid group rather than as a Siemens division. The Siemens brand gradually phased out as the organization operated under the Sivantos identity and managed its broader portfolio. This makes Siemens Hearing Instruments a historical brand and former business unit whose legacy continued through the successor company, personnel, technologies, distribution relationships, and product brands associated with Sivantos. On March 1, 2019, Sivantos Group joined with Widex, a hearing-aid company based in Lynge, Denmark. The combination formed WSA, creating a larger hearing-aid group and marking another stage in the corporate evolution of the former Siemens audiology business. Siemens Hearing Instruments is therefore no longer best characterized as an active standalone company. Its principal historical significance lies in its role as Siemens AG's hearing-aid operation and in its transition into Sivantos, Inc. and subsequently the WSA organization.
- 2019
Sivantos and Widex form WSA
[1]Sivantos Group combined with Widex on March 1, creating WSA and extending the post-Siemens corporate development of the hearing-aid business.
- 2015
Siemens divests its hearing-aid business
[1]Siemens AG sold its hearing-aid business to EQT VI and Santo Holding GmbH. The operation was separated from Siemens Audiology Solutions and became Sivantos Group; the United States affiliate adopted the name Sivantos, Inc.
Products and positioning
A professional hearing-care brand focused on hearing aids distributed and supported through audiologists, hearing-care professionals, and specialist channels.
Hearing aids
Siemens hearing aids
The core Siemens Hearing Instruments offering was a range of hearing aids supplied through hearing-care professionals. The products formed part of Siemens AG's audiology business and were supported by specialist sales, research and development, customer care, and professional distribution. After the 2015 divestiture, the Siemens name became part of the historical portfolio managed by the successor Sivantos organization and was gradually phased out.
Hearing aids
Audio Service
Audio Service was one of the hearing-aid brands included in the broader Sivantos portfolio associated with the former Siemens audiology business. It represented the group's multi-brand approach to serving hearing-care professionals alongside Siemens, Rexton, and A&M. The available reference material does not identify specific models or launch dates for this brand within the Siemens Hearing Instruments article.
Hearing aids
Rexton
Rexton was another hearing-aid brand associated with the Sivantos Group portfolio after the Siemens business was separated. Its inclusion illustrates that the successor organization operated more than one hearing-care brand rather than simply continuing Siemens as a single-brand business. Specific products and dates are not established by the supplied reference.
Hearing aids
A&M
A&M was listed among the hearing-aid brands offered by Sivantos Group alongside Siemens, Audio Service, and Rexton. The brand formed part of the successor group's professional hearing-care portfolio. The supplied material does not provide model-level details, launch dates, or a separate history for A&M in relation to Siemens Hearing Instruments.
Brand decisions
2019
Combination with WidexM&ABackground
Sivantos Group pursued a combination with Widex, another international hearing-aid company.
Action taken
Sivantos Group joined forces with Widex on March 1, forming WSA.
Aftermath
The former Siemens hearing-aid operation became part of a larger hearing-aid group operating under the WSA structure.
2015
Divestiture of the Siemens audiology businessM&ABackground
Siemens AG transferred its hearing-aid business out of the Siemens group as part of the separation of Siemens Audiology Solutions.
Action taken
The business was sold to EQT VI and Santo Holding GmbH and reorganized as Sivantos Group. The United States affiliate changed its name from Siemens Hearing Instruments to Sivantos, Inc.
Aftermath
The operation became an independent multi-brand hearing-aid group, and the Siemens brand gradually phased out.
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