Sonexos
Sonexos develops plasma-based active noise control systems to reduce low-frequency sound in ventilation, vehicles, and industrial settings.
Sonexos is a hardware & semiconductors company based in Lausanne, CH, founded in 2022. It has raised $6.04 million in disclosed funding. Its latest round was a Seed of €5.4 million in October 2026.
Overview
Sonexos manufactures plasma-based active noise control technology designed to address low-frequency sound challenges where traditional materials fail. The company’s core technology, the Plasmacoustic® platform, employs cold atmospheric plasma to actively manage acoustic pressure, providing a lighter and more efficient alternative to passive insulation like foam or heavy barriers [0]. Its product suite includes the Plasmapanel® for integration into various hardware, including ventilation systems, automotive cabins, and industrial machinery [0, 1]. In addition to its hardware, the company provides strategic advisory services—such as product design, acoustic benchmarking, and system integration support—to help original equipment manufacturers deploy these acoustic solutions [1]. Founded in 2022, the startup operates from headquarters in Lausanne, Switzerland, with facilities in Italy, New Zealand, the United States, and Hong Kong [0]. As of October 2026, Sonexos is at the seed stage and has raised $6.04M in funding [Registry].
Funding
Total disclosed: $6M across 1 round. Computed only from sourced rounds.
Investors
Questions and answers
What does Sonexos do?
Sonexos develops plasma-based active noise control systems to reduce low-frequency sound in ventilation, vehicles, and industrial settings.
How much has Sonexos raised?
Sonexos has raised $6.04 million in disclosed funding across 1 round tracked by OSH.
Who has invested in Sonexos?
Investors in Sonexos include Valquest Partners and Robert Bosch Venture Capital GmbH.
When and where was Sonexos founded?
Sonexos was founded in 2022 and is based in Lausanne, CH.
Timeline
Founded
Sources
- 1.Lausanne’s Sonexos raises €5.4 million to tackle low-frequency noise from fans, compressors and even data centres — EU-Startups, Oct 26, 2026
- 2.Sonexos · Official
- 3.Sonexos · Official