Koss Porta Pro Classic On-Ear Headphones, Black/Silver

From the brand The Original American Stereophone Company

John C. Koss changed the way we all listen to music when he invented the world's first SP/3 stereophone in 1958. Koss sought to replicate the excitement of a live musical performance, allowing listeners to experience sound as they had never before, bringing them closer to the music they love. Music lovers around the world recognize that dedication to accuracy in sound reproduction as: The Sound of Koss.

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Birth of the Stereophone

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

In 1960, Koss released the predecessor to the SP/3 with a lighter design, more comfortable headband and superior sound quality – the SP/3X.

In 1970, the Pro/4AA set the standard for full-size professional headphones, delivering true full frequency performance.

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 and set performance and comfort standards worldwide for decades to come.

In 1989, the JCK/300 Kordless Headphone system set the standard for infrared wireless headphones.

In 1990, Koss's revolutionary ESP/950 electrostatic headphones introduced breakthrough high-fidelity sound.

Carrying on the legacy of the Pro/4 line, the 2014 Pro4S Studio Headphone was specifically designed for audio professionals.

In 2017, Koss released the acclaimed KPH30i, featuring an ultra-light weight design with remarkable high-fidelity sound.

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.

Porta Pro Collection

Introduced in 1984, for over 40 years, the Porta Pro continues to be one of the most recognized headphones around the world.

Legendary Sound Experience breathtaking high-fidelity audio at 15-25,000Hz with deep bass and a remarkable midrange.

Perfectly Portable Porta Pro Limited Edition's unique collapsible design and included case allows for easy portability.

40 Years of Perfection Introduced in 1984, Porta Pro has stood the test of time thanks to its durable, lightweight design.

The Perfect Fit An adjustable headband with ComfortZone temporal pads provide a comfortable listening experience.

Legendary Design The acclaimed Koss Porta Pro was introduced in 1984 and continues to be one of the most recognized headphones around the world.

Perfectly Portable Porta Pro features a unique collapsible design for easy storage and ultimate portability.

The Sound of Koss Koss engineered 60 Ohm drivers deliver remarkable high-fidelity audio at 15-25,000Hz producing deep bass, crisp highs and superior midrange.

Comfort Zone Adjustable headband and ComfortZone temporal pads providing a comfortable listening experience.

Two Classics. One Remarkable Listening Experience.

Porta Pro Classic True to the original, Porta Pro Classic remains virtually unchanged since its introduction in 1984 using the same 60 Ohm drivers, producing deep bass, crisp highs and superior midrange.

Porta Pro Black Looking for a modern look with a retro soul? Porta Pro black shares everything listeners love from the original, now in a sleek jet black colorway.

Legendary Sound. Legendary Design. For over 40 years, the Koss Porta Pro has delivered a rich and expansive audio experience with deep bass, crisp highs and a breathtaking midrange you have to hear to believe. #HearingIsBelieving

The Koss Porta Pro embodies the perfect blend of high-fidelity audio and nostalgic style. Its distinctive retro style design has become an iconic symbol in the world of fashion and portable audio.

Frequency Response: 15 - 25,000 Hz Impedance: 60 Ohms SPL: 111 dB Drivers: Koss Dynamic Cushions: Foam Connector: 3.5mm ComfortZone: Adjustable Temporal Pads Included: Porta Pro, carrying pouch

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