Koss Porta Pro On-Ear Communication Headset with Microphone

The Original American Stereophone Company's Legacy

In 1958, John C. Koss revolutionized the way we listen to music by inventing the world's first SP/3 stereophone. Koss' mission was to replicate the excitement of live musical performances, allowing listeners to experience sound like never before and bringing them closer to the music they love. This dedication to accurate sound reproduction is recognized worldwide as the "Sound of Koss."

The Birth of the Stereophone

Before the world's first SP/3 Stereophone in 1958, John C. Koss had developed a portable stereo photograph player with side-wing speakers. In 1958, Koss then invented the groundbreaking SP/3 Stereophone, introducing personal stereo audio to the world.

Building on Innovation

In 1960, Koss released the SP/3X, the predecessor to the SP/3, featuring a lighter design, a more comfortable headband, and superior sound quality. In 1970, the Pro/4AA set the standard for full-size professional headphones, delivering true full-frequency performance.

Expansion and Advancement

On June 25, 1971, John C. Koss unveiled the new Koss World Headquarters in Milwaukee, Wisconsin. In 1974, Koss released the HV/1A, the first dynamic headphone capable of reproducing all 10 audible octaves. In 1984, the acclaimed Porta Pro was released, setting performance and comfort standards worldwide for decades.

Wireless and Electrostatic Innovations

In 1989, the JCK/300 Kordless Headphone system set the standard for infrared wireless headphones. In 1990, Koss' revolutionary ESP/950 electrostatic headphones introduced breakthrough high-fidelity sound.

Continuing the Legacy

In 2014, the Pro4S Studio Headphone was specifically designed for audio professionals, carrying on the legacy of the Pro/4 line. In 2017, Koss released the acclaimed KPH30i, featuring an ultra-lightweight design with remarkable high-fidelity sound.

Expanding the Utility Series

In 2021, Koss Utility Series introduced three new headphones, allowing listeners to connect via Lightning, USB-C, and 3.5mm. In 2023, Koss continued its evolution of wireless headphones with the TWS250i True Wireless Earbuds.

The Porta Pro Communication Headset

The Porta Pro Communication Headset takes everything listeners love about the original Porta Pro and adds a noise-cancelling electret microphone for crystal-clear communication, all while maintaining its lightweight, portable design and legendary sound.

Delivering Legendary Sound

Koss engineered 60-Ohm drivers that deliver remarkable high-fidelity audio at 15-25,000Hz, producing deep bass, crisp highs, and superior midrange. The electret microphone helps reduce ambient noise and background distractions, resulting in improved voice clarity during calls and recordings.

Perfectly Portable and Comfortable

The Porta Pro Communication Headset features a unique collapsible design for easy storage and portability. The adjustable headband and ComfortZone temporal pads provide a comfortable listening experience for hours of use.

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