Orange and black headphones on a wooden surface with a blurred background

Headphones on an oscilloscope with a wooden surface background

Koss headphones with text about legendary retro sound and dynamic drivers.

Retro-style headphones with orange cushions and stainless steel headband on a white background.

Orange headphones on a stand with a lamp and books in the background

Orange and silver headphones on a brown surface

Three generations of Koss headphones from 1982 to 2026 with text about sound innovation.

KPH40 RetroOn Ear Headphones

Name: KPH40 Retro
Brand: Koss Stereophones
SKU: 198318.101
Price: 29.99 USD
Availability: InStock

Rediscover the golden age of sound with KPH40 Retro.

KPH40 Retro delivers a timeless audio experience rooted in over 65 years of sound innovation and design only Koss can deliver. Enjoy incredibly spacious, detailed high-fidelity audio with an ultra-wide 15-25,000 Hz frequency response, bringing your music to life with unmatched depth, bass response and detail you have to hear to believe.

A lightweight, ultra durable, retro-style stainless-steel headband houses 60 Ohm dynamic drivers, paired with vivid orange cushions for a bold, old-fashioned hi-fi aesthetic that looks as good as it sounds, all backed by the Koss Limited Lifetime Warranty.

Timeless design. Legendary sound. Tuned for today.

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Koss Stereophones

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Rediscover the golden age of sound with the KPH40 Retro, where classic design meets modern high-fidelity performance.

Every track comes alive with spacious, detailed audio, delivering remarkable clarity, depth, and precision across the frequency spectrum. From delicate highs to rich lows, the KPH40 Retro captures the full nuance of your music, just as Koss has done for generations.

Its lightweight stainless steel headband and open back design provides comfort for long listening sessions while enhancing the expansive soundstage. Vivid orange cushions add a bold, retro hi-fi aesthetic, paying homage to the iconic design of vintage Koss headphones.

Timeless in design, legendary in sound, KPH40 Retro is tuned for today’s listener while honoring the heritage that made Koss a name synonymous with high-fidelity audio.

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