Evolution of the Stereo Headphone

Ever since we invented the World's First SP/3 Stereophone, Koss has been leading the way in the evolution of stereo headphones.

The Story of the Stereo Headphone

In 1958 John C. Koss transformed his hospital television and repair business into a Worldwide Headphone icon when he invented the World's First Sp/3 Stereo Headphone in Milwaukee.

Get Closer to Your Music

Ever since we invented the World's first SP/3 Stereophone back in 1958, Koss Stereophones have been bringing people closer to the music they love.

We've Got a Headphone For That

From the World's First SP/3 Stereophone in 1958 to the BT540i Wireless Bluetooth Headphone, Koss Headphones has a legacy that spans 60 years of bringing people closer to the music they love.

Hearing is Believing

Get closer to the music you love with the Noise Isolating Koss BT540i Wireless Bluetooth Over-Ear Headphones. Featuring up to 12+ hours of battery life, NFC, On-Board Dual Microphones and built in controls.

Concept to Creation

Every creation starts with a concept. When we design a pair of Koss Headphones, we deeply consider how they feel, how they look and how they sound. That is our philosophy, that is the #SoundOfKoss.

Let Your Music Shine

Ever since we invented the World's First SP/3 Stereo Headphone in 1958, our goal has been to bring people closer to the music they love, so let your music shine with the latest Headphones and Speakers from Koss Headphones.

The American Dream

Hard Work, Determination & Initiative are the foundation of the American Dream.   No one exemplifies the American Dream better than John C. Koss, who invented the World’s First SP/3 Stereo Headphone in 1958 and changed the way we all listen to music.

Who Invented the Stereo Headphone?

Renowned for the invention of the World’s First SP/3 Stereophone, Koss has been pioneering hi-fi since 1958 - three generations of American ingenuity, integrity and incomparable quality. 

Koss BT539i Wireless Bluetooth® Headphones

Introducing the Koss BT539i Wireless Bluetooth® Over-Ear Headphone.   Packing powerful wireless sound into a portable fold-flat unit, the BT539i features on-board controls to quickly pause, play, change volume and navigate songs. BT539i delivers up to 12 hours of play/call time, and up to 40 hours of Standby Time.


Koss BTS1 Wireless Bluetooth® Speaker

Small enough to fit in a pocket the BTS1 Wireless Bluetooth® Speaker is designed specifically for portability and on-the-go use.

Plug in Colors

The Koss Plug revolutionized the world of in-ear headphones. A first of its kind, these are stereo, noise isolating in-ear headphones that deliver the kind of accurate acoustical reproduction and isolation typically found in high-end, closed-style high fidelity headphones.

Light The Hoan

The mission is to illuminate the Hoan Bridge in recognition of the countless unseen or under-celebrated acts of kindness, generosity and service that give our city hope.