Sennheiser HD 400S Wired Over-Ear Headphones

Sennheiser is a prestigious audio brand with a long history of engineering excellence in high-fidelity sound. The product pictured belongs to the HD series, known for delivering balanced acoustics and a comfortable over-ear design. While the brand is synonymous with German engineering, high-volume consumer models like the HD 400S are typically manufactured in China to meet global demand while maintaining strict quality control standards.

In 2022, Sennheiser electronic GmbH & Co. KG transitioned its consumer electronics division to the Swiss-based Sonova Group. This strategic move allowed Sennheiser to focus on its professional audio and business communications business, while Sonova took charge of developing and marketing Sennheiser-branded headphones and hearing aids. Despite this change in corporate ownership, the brand remains deeply rooted in its German heritage, with development still heavily influenced by the founding company’s original principles.