TESNA is known for its rigorous commitment to quality and innovation. Both its headphone driver R&D and proprietary chip production are carried out under exceptionally high European standards. The company operates manufacturing facilities in Kallenberg, Denmark, and Shenzhen, Guangdong, China.

In 2017, TESNA entered a strategic collaboration with the renowned Bayer Group in Heilbronn, Germany, to develop high-performance Tesla driver units. These units have received widespread acclaim for their outstanding acoustic quality and reliability.

Building on its success, TESNA officially expanded into the Southeast Asian market in November 2023. The brand is now available in Singapore, Malaysia, Thailand, South Korea, Japan, Hong Kong, Taiwan, Mainland China, and other regions. It continues to serve discerning consumers with a broad range of premium products, including Bluetooth headsets, 3C digital accessories, Bluetooth audio systems, and more.