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Koss Corporation is an American company renowned for designing and manufacturing high-fidelity headphones and audio accessories. Founded in 1953 by John C. Koss, the company introduced the world's first commercial SP/3 Stereophones in 1958, revolutionizing personal listening. Koss continues to focus on delivering 'The Sound of Koss,' emphasizing accurate sound reproduction, durable product design, and a unique listening experience for audiophiles and everyday consumers alike. The company is publicly traded under the symbol KOSS on the Nasdaq stock market.
Serves as the central hub for Koss's operations, including administration, research and development (R&D), product design, engineering, marketing, sales, and customer support. Some light assembly or specialized manufacturing may also occur on-site.
The facility is primarily functional, geared towards audio innovation and efficient operations. While not a public architectural landmark, it houses specialized acoustic testing labs and product development workshops crucial for maintaining 'The Sound of Koss'.
Given its heritage and relatively small size, the work culture at Koss HQ is likely characterized by a strong sense of tradition, a passion for audio engineering, and close collaboration among teams. Employees often share a long tenure, contributing to a focused atmosphere centered on quality and the brand's legacy.
The Milwaukee headquarters is historically significant as the birthplace of the world's first commercial stereophones. It remains the heart of Koss Corporation, symbolizing its enduring commitment to American audio innovation, quality craftsmanship, and the iconic 'Sound of Koss' that has defined the brand for decades.
Koss Corporation products are sold worldwide through an extensive network of distributors, retailers, and online e-commerce platforms. While its primary operations, R&D, and headquarters are centralized in Milwaukee, USA, Koss supports a global customer base by making its iconic headphones and audio accessories accessible in numerous countries across North America, Europe, Asia, and other regions. Their global reach is focused on product distribution and sales rather than maintaining numerous physical international offices.
4129 N. Port Washington Ave.
Milwaukee
WI
USA
No additional office locations available.
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As of April 2025, Koss Corporation' leadership includes:
Koss Corporation has been backed by several prominent investors over the years, including:
Koss Corporation's executive team has demonstrated considerable stability over the past year. No major new hires or departures at the executive level have been publicly announced in the last 12 months, reflecting consistency in the company's leadership.
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Koss Corporation commonly uses an email format that combines the first initial of an employee's first name with their full last name, followed by the @koss.com domain. This is a standard pattern for many organizations of its size.
[first_initial][last]@koss.com
Format
mkoss@koss.com
Example
90%
Success rate
Yahoo Finance (via Business Wire) • February 8, 2024
Koss Corporation announced its financial results for the second quarter ended December 31, 2023. Net sales were $2.3 million, compared to $2.8 million for the same period in the prior year. The company reported a net loss of $259,187....more
Business Wire • October 26, 2023
Koss Corporation marked its 65th anniversary, highlighting its legacy since John C. Koss invented the world's first high-fidelity stereophones in 1958. The company also teased new product developments and initiatives for the celebratory year....more
Yahoo Finance (via Business Wire) • August 24, 2023
Koss Corporation released its financial results for the fourth quarter and full fiscal year ended June 30, 2023. For the full year, net sales were $9.6 million, and the company reported a net loss. The report touched on market conditions and strategic outlooks....more
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