Lightweight Listening
KPH40 Utility packs remarkable high-fidelity audio into a sleek, ultra lightweight design.
The Sound of Koss
Experience remarkable high-fidelity audio at 15-25,000Hz with deep bass and superior highs/midrange.
Detachable Cord System
Enjoy the freedom to connect to USB-C, 3.5mm and Bluetooth devices with a detachable cord system.
There's a DAC for That
Enjoy high resolution 24-bit/96kHz audiowith the built in DAC found on the USB-C Utility cord.
Bold Sound. Bold Colors.
Bundle Koss Standard and Oversized cushions available in orange, red, blue, purple and yellow.
Premium Design
KPH40 Utility features a sleek stealth grey stainless steel headband and soft foam cushions providing an ultra lightweight listening experience.
Koss Utility Series
Koss Utility Series features a detachable cord system giving listener's the freedom to connect to the devices they own now, or in the future.
The Choice is Yours
Get started right with the included 3.5mm Utility cord or bundle an additional USB-C or UtilityBluetooth adapter to connect to more of your devices.
The Perfect Fit
KPH40 Utility features an adjustable headband and articulating ear cups providing a comfortable listening experience for hours of use.
Two Colors. One Remarkable Listening Experience.
Stealth Grey
KPH40 Utility sports a sleek stealth grey headband with soft foam cushions which provides an ultra lightweight listening experience for hours of use.
Rhythm Beige
KPH40 Utility now comes in the iconic Koss Rhythm Beige colorway first found on the legendary Pro/4AA, Porta Pro Limited Edition and KPH30i.
How it Works
Utility Series
The Koss Utility Series is an all-new way to experience The Sound of Koss. Three new headphones, three new cords, one seamless experience where everything works together.
Koss Utility Series features a detachable cord system giving listeners the flexibility to switch easily between multiple devices. Get listening right away with the included 3.5mm Utility cord. Need something different? Bundle the additional USB-C or Utility Bluetooth adapter with your headphone purchase.
KPH40 Utility Headphone
Merchant Video
More Products From Koss
 KPH40 Utility |  Standard Cushions |  Oversized Cushions |  Porta Pro Wireless |  Porta Pro Utility |  Porta Pro |  Porta Pro Limited Edition | |
|---|---|---|---|---|---|---|---|
Customer Reviews | — | — | — | — | — | — | — |
Price | — | — | — | — | — | — | — |
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 |
The Original American Stereophone Company
In 1958 John C. Koss changed the way we all listen to music when he invented the world's first SP/3 stereophone.
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
Standard & Oversized Cushions
Porta Pro Collection
Retro Headphones
Utility Series
Best Sellers
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.
World's First SP/3 Stereophone
in 1958 John C. Koss invented the world's first SP/3 Stereophone introducing personal stereo audio to the world.
SP/3X
In 1960 Koss released the predecessor to the SP/3 with a lighter design, more comfortable headband and superior sound quality.
Pro/4AA
In 1970 Pro/4AA set the standard for full-size professional headphones delivering true full frequency performance.
Koss World Headquarters
On June 25, 1971 John C. Koss unveiled the new Koss World Headquarters in Milwaukee, Wisconsin.
HV/1A
In 1974, Koss released the HV/1A the first dynamic headphone capable of reproducing all 10 audible octaves.
Porta Pro
In 1984 the acclaimed Porta Pro was released and set performance and comfort standards worldwide for decades to come.
JCK/300 Kordless System
In 1989 the JCK/300 Kordless Headphone system set the standard for infrared wireless headphones.
ESP/950
In 1990 Koss's revolutionary ESP/950 electrostatic headphones introduced breakthrough high-fidelity sound.
Pro4S Studio
Carrying on the legacy of the Pro/4 line, 2014's Pro4S Studio Headphone was specifically designed for audio professionals.
KPH30i
In 2017 Koss released the acclaimed KPH30i featuring an ultra-light weight design with remarkable high-fidelity sound.
Utility Series
In 2021 Koss Utility Series introduced three new headphones allowing listeners to connect via Lightning, USB-C and 3.5mm.
True Wireless Earbuds
In 2023 Koss continued it's evolution of wireless headphones with the TWS250i True Wireless Earbuds.
Lightweight Listening
KPH40 Utility packs remarkable high-fidelity audio into a sleek, ultra lightweight design.
The Sound of Koss
Experience remarkable high-fidelity audio at 15-25,000Hz with deep bass and superior highs/midrange.
Detachable Cord System
Enjoy the freedom to connect to USB-C, 3.5mm and Bluetooth devices with a detachable cord system.
There's a DAC for That
Enjoy high resolution 24-bit/96kHz audiowith the built in DAC found on the USB-C Utility cord.
Bold Sound. Bold Colors.
Bundle Koss Standard and Oversized cushions available in orange, red, blue, purple and yellow.
Premium Design
KPH40 Utility features a sleek stealth grey stainless steel headband and soft foam cushions providing an ultra lightweight listening experience.
Koss Utility Series
Koss Utility Series features a detachable cord system giving listener's the freedom to connect to the devices they own now, or in the future.
The Choice is Yours
Get started right with the included 3.5mm Utility cord or bundle an additional USB-C or UtilityBluetooth adapter to connect to more of your devices.
The Perfect Fit
KPH40 Utility features an adjustable headband and articulating ear cups providing a comfortable listening experience for hours of use.
Two Colors. One Remarkable Listening Experience.
Stealth Grey
KPH40 Utility sports a sleek stealth grey headband with soft foam cushions which provides an ultra lightweight listening experience for hours of use.
Rhythm Beige
KPH40 Utility now comes in the iconic Koss Rhythm Beige colorway first found on the legendary Pro/4AA, Porta Pro Limited Edition and KPH30i.
KPH40 Utility Headphone
Merchant VideoHow it Works
Utility Series
The Koss Utility Series is an all-new way to experience The Sound of Koss. Three new headphones, three new cords, one seamless experience where everything works together.
Koss Utility Series features a detachable cord system giving listeners the flexibility to switch easily between multiple devices. Get listening right away with the included 3.5mm Utility cord. Need something different? Bundle the additional USB-C or Utility Bluetooth adapter with your headphone purchase.
The Choice is Yours
Get started right away with the included 3.5mm Utility cord or bundle the additional Lightning or USB-C Utility cord.
Control Your Music
Lightning and USB-C Utility cords come with an additional in-line remote for taking calls and controlling your music.
Detachable Cord System
Never worry about dead batteries or the wrong connector again with detachable 3.5mm, Lightning and USB-C Utility cords.
Adjustable Headband
Get the perfect fit with an adjustable headband and soft foam cushions all in an ultra lightweight listening experience..
The Sound of Koss
Dynamic 60 Ohm drivers deliver remarkable high-fidelity audio at 15-25,000Hz producing deep bass, crisp highs and superior midrange.
Premium Build
Sleek ultra lightweight stainless steel headband with soft foam cushions provide a comfortable listening experience for hours of use.
| Frequency Response | 15 - 25,000 Hz |
|---|---|
| Impedance | 60 Ohms |
| SPL | 111 dB |
| Drivers | Dynamic |
| Headband | Stainless Steel |
| Utility Connector | 2.5mm |
| Cushions | Foam |
| Included | KPH40 Utility, 4 ft / 1.2m 3.5mm Utility cord |
More Products From Koss
KPH40 Utility | Standard Cushions | Oversized Cushions | Porta Pro Wireless |  Porta Pro Utility | Porta Pro | Porta Pro Limited Edition |
|---|---|---|---|---|---|---|
| Customer Reviews | ||||||
| — | — | — | — | — | — | — |
| Price | ||||||
| — | — | — | — | — | — | — |
| 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 |
The Original American Stereophone Company
In 1958 John C. Koss changed the way we all listen to music when he invented the world's first SP/3 stereophone.
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
Standard & Oversized Cushions
Porta Pro Collection
Retro Headphones
Utility Series
Best Sellers
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.
World's First SP/3 Stereophone
in 1958 John C. Koss invented the world's first SP/3 Stereophone introducing personal stereo audio to the world.
SP/3X
In 1960 Koss released the predecessor to the SP/3 with a lighter design, more comfortable headband and superior sound quality.
Pro/4AA
In 1970 Pro/4AA set the standard for full-size professional headphones delivering true full frequency performance.
Koss World Headquarters
On June 25, 1971 John C. Koss unveiled the new Koss World Headquarters in Milwaukee, Wisconsin.
HV/1A
In 1974, Koss released the HV/1A the first dynamic headphone capable of reproducing all 10 audible octaves.
Porta Pro
In 1984 the acclaimed Porta Pro was released and set performance and comfort standards worldwide for decades to come.
JCK/300 Kordless System
In 1989 the JCK/300 Kordless Headphone system set the standard for infrared wireless headphones.
ESP/950
In 1990 Koss's revolutionary ESP/950 electrostatic headphones introduced breakthrough high-fidelity sound.
Pro4S Studio
Carrying on the legacy of the Pro/4 line, 2014's Pro4S Studio Headphone was specifically designed for audio professionals.
KPH30i
In 2017 Koss released the acclaimed KPH30i featuring an ultra-light weight design with remarkable high-fidelity sound.
Utility Series
In 2021 Koss Utility Series introduced three new headphones allowing listeners to connect via Lightning, USB-C and 3.5mm.
True Wireless Earbuds
In 2023 Koss continued it's evolution of wireless headphones with the TWS250i True Wireless Earbuds.
