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Product description
Hearing is Beleiving
Legendary. Retro. Sound.
Experience unmatched high-fidelity audio in an ultra-lightweight retro design only Koss can deliver.
15-25,000 Hz
Ultra-Wide Frequency Response
Driven by Koss 60 Ohm dynamic drivers, KPH40/Retro delivers stunning detail, transparency & clarity.
Just 109 grams
Strong as Steel. Light as Air.
An elegant, stainless steel headband delivers a durable, ultra-lightweight listening experience.
The Perfect Fit
A precision-crafted stainless steel headband adapts to every head for unmatched comfort.
Soft Foam Cushions
All Orange Everything
KPH40 Retro features retro-style orange foam cushions for a comfortable listening experience.
1 KPH40/Retro
2 Wide Frequency Response
3 Lightweight Design
4 Adjustable Headband
5 Retro Cushions
High-Fidelity Audio
Koss 60 ohm dynamic drivers deliver breathtaking high-fidelity sound with exceptional clarity and an ultra-wide frequency response from 15–25,000 Hz.
Adjustable Headband
KPH40 Retro features an adjustable headband and articulating ear cups providing a comfortable listening experience for hours of use.
Retro-Style Cushions
Inspired by 1980s Koss classics like P/19 and KFF/100, KPH40 Retro features retro-style orange foam cushions for a comfortable listening experience.
Ultra-Lightweight Design
A precision-engineered stainless steel headband delivers exceptional strength in an ultra-lightweight design, built for portability and longevity.
Real. Retro. Soul. 
The Sound of Koss
Drawing inspiration from 1980s Koss classics like the P/19 and KFF/100, the KPH40 Retro combines iconic retro design with modern high-fidelity performance, featuring an adjustable stainless steel headband and retro-style orange foam cushions for legendary portability and the legendary Sound of Koss.
High-Fidelity Audio
Precision-tuned 60 ohm dynamic drivers, mounted on articulating ear cups, deliver exceptional clarity, nuanced detail, and full transparency across an ultra-wide frequency response spanning 15–25,000 Hz for an immersive, studio-quality listening experience.
Timeless Design. Tuned for Today.
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 durable, stainless-steel headphone paired with vivid orange retro-style cushions adds a vintage hi-fi aesthetic that looks as good as it sounds.
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. KPH40 Retro Unboxing Merchant Video
See What’s Included
Unboxing
Take a closer look at the vibrant retro-style orange cushions, ultra-lightweight stainless steel headband, and 60-ohm dynamic drivers engineered to deliver rich, high-fidelity sound with unmistakable retro soul only Koss can deliver in this unboxing video.
Frequency Response 15 – 25,000 Hz Impedance 60 Ohms SPL 101 dB Drivers Dynamic Headband Stainless Steel Cord 4ft / 1.2m Cushions Orange Foam Included KPH4/Retro with Orange Cushions Connector 3.5mm
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Customer Reviews
4.4 out of 5 stars 1,327
4.6 out of 5 stars 110
4.6 out of 5 stars 110
3.9 out of 5 stars 404
4.0 out of 5 stars 249
4.6 out of 5 stars 17,246
4.4 out of 5 stars 2,241
Price
$39.99$39.99
$9.99$9.99
$9.99$9.99
$99.99$99.99
$49.99$49.99
$39.99$39.99
$59.99$59.99
Type
On Ear
Ear Clip
On Ear
On-Ear
On Ear
On Ear
On Ear
Connection
Utility Series
3.5mm
3.5mm
Bluetooth
Utility Series
3.5mm
3.5mm
Utility Series
3.5mm, USB-C & Lightning
–
–
—
3.5mm, USB-C & Lightning
–
–
Audio Controls
Utility Cord Remote
–
In-Line Remote
Integrated Audio Controls
Utility Cord Remote
–
In-Line Remote
Microphone
Utility Cord Remote
–
In-Line Remote
Integrated Microphone
Utility Cord Remote
–
In-Line Remote
Noise Cancelling
–
–
–
—
–
–
–
Adjustable Headband
Yes
–
Yes
Yes
Yes
Yes
Yes
Collapsible
–
–
–
Yes
Yes
Yes
Yes
Carrying Case/Pouch
–
–
–
Hard Shell Case
Carrying Pouch
Carrying Pouch
Hardshell Case
LEGENDARY RETRO SOUND – Experience unmatched high-fidelity audio in an ultra-lightweight retro design only Koss can deliver.
ULTRA-WIDE FREQUENCY RESPONSE – Driven by Koss 60 ohm dynamic drivers, KPH40 Retro delivers stunning detail and clarity across an ultra-wide 15-25,000 Hz frequency response.
VINTAGE STYLE – Inspired by 1980s Koss classics like P/19 and KFF/100, KPH40 Retro features retro-style orange foam cushions for a comfortable listening experience.
STRONG AS STEEL – An elegant, ultra-durable stainless steel headband with articulating ear cups provides a comfortable listening experience for hours of use.
SIMPLE CONNECTION – Connect to your CD player, tape player and Walkman with a convenient 3.5mm standard headphone jack plug
$29.99