Sennheiser electronic GmbH & Co. KG

"Sennheiser electronic GmbH & Co. KG (/ˈzɛnhaɪzər/, German pronunciation: [zɛnˈhaɪ̯zɐ]) is a German privately held audio company specializing in the design and production of a wide range of high fidelity products, including microphones, headphones, telephone accessories and aviation headsets for personal, professional and business applications. The company's head office is located in Wedemark, near Hanover, and the company is represented in more than 50 countries worldwide.[2]"--Wikipedia, 2022