---
product_id: 379307046
title: "Koss KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black)"
brand: "koss"
price: "€ 86.83"
currency: EUR
in_stock: true
reviews_count: 8
category: "Koss"
url: https://www.desertcart.es/products/379307046-koss-kph40-utility-on-ear-headphones-detachable-interchangeable-cord-system
store_origin: ES
region: Spain
---

# Open-back for immersive sound Ultra lightweight stainless steel frame Detachable, interchangeable cords Koss KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black)

**Brand:** koss
**Price:** € 86.83
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound game with retro style and modern versatility!

## Quick Answers

- **What is this?** Koss KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black) by koss
- **How much does it cost?** € 86.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/379307046-koss-kph40-utility-on-ear-headphones-detachable-interchangeable-cord-system)

## Best For

- koss enthusiasts

## Why This Product

- Trusted koss brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Iconic Retro Vibes:** Timeless design that sparks nostalgia while elevating your desk setup.
- • **Featherlight Comfort:** Ultra-lightweight stainless steel chassis and soft foam cushions keep you focused, not fatigued.
- • **Audiophile-Grade Sound:** Dynamic drivers deliver crystal-clear, concert-hall quality audio at 25kHz frequency response.
- • **Customizable Connectivity:** Swap cables effortlessly with 3.5mm, USB-C, or Bluetooth upgrade options for ultimate versatility.
- • **Lifetime Warranty Assurance:** Koss backs your investment with hassle-free lifetime warranty and a thriving modding community.

## Overview

The Koss KPH40 Utility On-Ear Headphones combine a retro open-back design with audiophile-quality dynamic drivers and a lightweight stainless steel frame. Featuring a detachable, interchangeable cord system compatible with 3.5mm, USB-C, and Bluetooth upgrades, these headphones offer customizable connectivity and exceptional comfort with soft foam ear cushions. Backed by Koss’s lifetime warranty, they deliver premium sound performance and durability for everyday use and professional listening.

## Description

Buy Koss KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black): On-Ear Headphones - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great Koss sound! Found the perfect cable extension. - I wanted a lightweight & comfortable, affordable, yet great-sounding pair of on-hear headphones to sit at my desk (not travel) with. Fortunately, Koss came up in one of my many searches and I suddenly remembered my very first pair of headphones for my very first stereo back in the late 70's. They surprisingly blew away all the competition back then, even Pioneer, Panasonic and Sony headphones. Sounded like you were right in the concert hall! So I looked at all the latest offerings by Koss, and really appreciated the long review for this pair by the top reviewer 'Ender'—comparing different models of Koss & other headphones. (I don't have time to be an audiophile, I just want to enjoy my music collection in iTunes while sitting at the computer). I immediately ordered these headphones. I knew I would also want to extend the cable, but waited until after they arrived to see the size and types of plugs they were fitted with. (The Q&A for this product in regard to that was too technical & confusing to follow.) These headphone did not disappoint! They have that great Koss sound, with a comfortable lightweight band on my head, which gratefully doesn't get snagged in my thick curly hair. Don't let the appearance of the thin foam earpads fool you— they are comfy, secured well and transmit the audio clearly. (UPDATE: I had initially tried adding a pair of Yaxi pads as suggested by another helpful reviewer, but those would not stay on, and were so thick the sound was being muffled. Stick with the OEM earpads!) Next up was to find a longer extension cable that fit. Curious that Koss doesn't offer anything—even on their website. I first noted that the tip that plugs into the cable that is permanently attached to the headphones is 2.5mm (male) and the other plug that goes into your computer, music device, etc. is 3.5mm (thicker plug), also male. Then I had to learn the difference between TRRS (3 black rings on the tip of the plug) and TRS (2 black rings). So the search was on for a quality extension cable with a 2.5mm male TRRS plug and a 3.5mm male TRS plug—which is exactly what these headphones require. I found only one such cable on desertcart—ASIN: B08MX53T1T and took a chance despite the ridiculous product name. Turns out it is of solid build and does not diminish the sound quality of these Koss headphones. Total length of combined straight & coiled cord is 51 inches, not stretched. Minimal upgrade costs and these headphones are customized for my comfort & listening pleasure! I recommend all of these parts, but probably not as a mobile on-the-go setup—I'm not sure the headphones would hold up to that, they seem too fragile for traveling with. (The extension cable would certainly hold up, though.) Enjoy, and I hope this helped!
Review: Amazing Sound, Strong Metal Band, Light and Comfy, Lifetime warranty! - These are Gods headphones. You won't find more amazing sound for the money than with any of the KOSS titanium driver headphones like these! Had these for a year now. They have the same exact drivers as the KTXPro1 and other Koss titanium headphones but the durable and lightweight metal headband is stronger and comfy. Feels almost like your not even wearing headphones. Because the speaker pivots in the center they perfectly angle themselves to fit your ears unlike the KTXPro1 or PortaPro. The cord can be swapped and upgraded to a USB-C version with a built in high res DAC that really improves the already amazing sound when connected to your smartphone or PC. They also now make a bluetooth upgrade module for these! The original cord was damaged when I got it caught on a door knob one day and kept walking. KOSS shipped me a new one within 5 days no questions asked. The USB-C utility cable got snagged at the gym after having it almost a year and again to my surprise KOSS replaced this much more expensive upgrade cable no questions asked and mailed it to me in just a few days. Koss provides their famous Lifetime warranty on these and will replace them with no hassle. I have used the warranty in the past on a pair of KTXPro1 headphones that were 7 years old and they actually honored the warranty. There are also awesome customization accessories available for these online. Besides the USC-C and Bluetooth upgrades I mentioned Koss also sells many different color earpads. Aftermarket companies make speaker housing replacements in many colors, speaker mod and cable upgrade kits from Hundo and even replacement metal headbands on some sites are available in both black and stainless steel. There is even a Koss modding community on Reddit.

## Features

- Open-Back, On-Ear Design, Retro Look
- Ultra Lightweight, Stainless Steel Chassis
- Audiophile Sound Performance
- Soft, Foam Ear Cushions
- 3.5mm Utility Cord Included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09KZC94X1 |
| Age Range (Description) | Adult |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #5,807 in Electronics ( See Top 100 in Electronics ) #118 in On-Ear Headphones #486 in Earbud & In-Ear Headphones |
| Cable Feature | Detachable |
| Compatible Devices | Devices with 3.5mm audio jack, USB-C port, or Lightning port |
| Connectivity Technology | Wired |
| Control Method | Touch |
| Control Type | Media Control |
| Controller Type | Wired |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,284) |
| Date First Available | November 3, 2021 |
| Earpiece Shape | Rounded, flat or slightly curved surface |
| Frequency Response | 25000 Hz |
| Generation | 1 x |
| Hardware Interface | 3.5mm Audio |
| Headphones Jack | 3.5 mm Jack |
| Included Components | Cable |
| Input Device Interface | 3.5 mm jack |
| Item Weight | 3.84 ounces |
| Item model number | KPH40 Utility Parent |
| Manufacturer | Koss |
| Material | Stainless Steel |
| Model Name | KPH40 Utility Parent |
| Noise Control | None |
| Number of Items | 1 |
| Package Dimensions | 8.54 x 6.02 x 2.17 inches |
| Recommended Uses For Product | Everyday Use, Traveling, Exercising, Recording |
| Sensitivity | 101 dB |
| Special Feature | Lightweight |
| Style | open-back |
| Supports Bluetooth Technology | Yes |
| UPC | 021299197455 |
| Units | 1.0 Count |
| Water Resistance Level | Not Water Resistant |
| Wireless Communication Technology | Bluetooth |

## Product Details

- **Brand:** Koss
- **Color:** Stealth Black
- **Ear Placement:** On Ear
- **Form Factor:** On Ear
- **Impedance:** 60 Ohms

## Images

![Koss KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black) - Image 1](https://m.media-amazon.com/images/I/613Q78K5VML.jpg)
![Koss KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black) - Image 2](https://m.media-amazon.com/images/I/517BJ7hlLBL.jpg)
![Koss KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black) - Image 3](https://m.media-amazon.com/images/I/618uRgf0rVL.jpg)
![Koss KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black) - Image 4](https://m.media-amazon.com/images/I/513KkfERbwL.jpg)
![Koss KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black) - Image 5](https://m.media-amazon.com/images/I/51WLnpf9qiL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Do these use same speakers as Porta Pros?**
A: Officially, I have never seen Koss admit that Kph40 and Porta Pros have the same driver.  But having both, I tested them on a Steely Dan song "Lunch with Gina" and I can't tell any difference in the sound.  So I think it comes to which head band you prefer, the folding Porta Pros or the single band 40.

**Q: Where can you buy a balanced cable for the KPH40 utility headphones?**
A: Just got mine KPH40 and checked the cable. It seems that 2.5mm TRRS socket is indeed balanced, but configured in 3.5mm standard (T: R+, R: L+, R: L-, S: R-). So it's NOT compatible with 2.5mm balanced output (like FIIO BTR5) using "straight" cable. You would have to use crossed cable for this setup (haven't found one yet), or use device with 3.5mm balanced standard.

**Q: Does anyone know when these will be back in stock? I would love to get a pair! :-)**
A: I Believe these are Quite available now (compared when 1st introduced !) either through Amazon- or Koss Factory Direct.

**Q: Koss should make a bluetooth ‘pendant’ for the utility series. that would be the icing. does any know of a bluetooth receiver with 2.5 mm termination?**
A: There are none. The problem here is you need to convert the 2.5mm trrs configuration with a wire. You can get any wire which fits hd598 either balanced or unbalanced. Then only connect to a Bluetooth pendant.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Koss sound! Found the perfect cable extension.
*by C***S on July 7, 2023*

I wanted a lightweight & comfortable, affordable, yet great-sounding pair of on-hear headphones to sit at my desk (not travel) with. Fortunately, Koss came up in one of my many searches and I suddenly remembered my very first pair of headphones for my very first stereo back in the late 70's. They surprisingly blew away all the competition back then, even Pioneer, Panasonic and Sony headphones. Sounded like you were right in the concert hall! So I looked at all the latest offerings by Koss, and really appreciated the long review for this pair by the top reviewer 'Ender'—comparing different models of Koss & other headphones. (I don't have time to be an audiophile, I just want to enjoy my music collection in iTunes while sitting at the computer). I immediately ordered these headphones. I knew I would also want to extend the cable, but waited until after they arrived to see the size and types of plugs they were fitted with. (The Q&A for this product in regard to that was too technical & confusing to follow.) These headphone did not disappoint! They have that great Koss sound, with a comfortable lightweight band on my head, which gratefully doesn't get snagged in my thick curly hair. Don't let the appearance of the thin foam earpads fool you— they are comfy, secured well and transmit the audio clearly. (UPDATE: I had initially tried adding a pair of Yaxi pads as suggested by another helpful reviewer, but those would not stay on, and were so thick the sound was being muffled. Stick with the OEM earpads!) Next up was to find a longer extension cable that fit. Curious that Koss doesn't offer anything—even on their website. I first noted that the tip that plugs into the cable that is permanently attached to the headphones is 2.5mm (male) and the other plug that goes into your computer, music device, etc. is 3.5mm (thicker plug), also male. Then I had to learn the difference between TRRS (3 black rings on the tip of the plug) and TRS (2 black rings). So the search was on for a quality extension cable with a 2.5mm male TRRS plug and a 3.5mm male TRS plug—which is exactly what these headphones require. I found only one such cable on Amazon—ASIN: B08MX53T1T and took a chance despite the ridiculous product name. Turns out it is of solid build and does not diminish the sound quality of these Koss headphones. Total length of combined straight & coiled cord is 51 inches, not stretched. Minimal upgrade costs and these headphones are customized for my comfort & listening pleasure! I recommend all of these parts, but probably not as a mobile on-the-go setup—I'm not sure the headphones would hold up to that, they seem too fragile for traveling with. (The extension cable would certainly hold up, though.) Enjoy, and I hope this helped!

### ⭐⭐⭐⭐⭐ Amazing Sound, Strong Metal Band, Light and Comfy, Lifetime warranty!
*by J***N on March 2, 2026*

These are Gods headphones. You won't find more amazing sound for the money than with any of the KOSS titanium driver headphones like these! Had these for a year now. They have the same exact drivers as the KTXPro1 and other Koss titanium headphones but the durable and lightweight metal headband is stronger and comfy. Feels almost like your not even wearing headphones. Because the speaker pivots in the center they perfectly angle themselves to fit your ears unlike the KTXPro1 or PortaPro. The cord can be swapped and upgraded to a USB-C version with a built in high res DAC that really improves the already amazing sound when connected to your smartphone or PC. They also now make a bluetooth upgrade module for these! The original cord was damaged when I got it caught on a door knob one day and kept walking. KOSS shipped me a new one within 5 days no questions asked. The USB-C utility cable got snagged at the gym after having it almost a year and again to my surprise KOSS replaced this much more expensive upgrade cable no questions asked and mailed it to me in just a few days. Koss provides their famous Lifetime warranty on these and will replace them with no hassle. I have used the warranty in the past on a pair of KTXPro1 headphones that were 7 years old and they actually honored the warranty. There are also awesome customization accessories available for these online. Besides the USC-C and Bluetooth upgrades I mentioned Koss also sells many different color earpads. Aftermarket companies make speaker housing replacements in many colors, speaker mod and cable upgrade kits from Hundo and even replacement metal headbands on some sites are available in both black and stainless steel. There is even a Koss modding community on Reddit.

### ⭐⭐⭐⭐ The Only Thing Hurting Them is the Hype
*by J***S on December 4, 2025*

The Koss KPH40 headphones are really good for what they are — a lightweight, budget headphone. If you ended up here after watching a glowing review by a tech influencer stating that these compete with $200 cans, you will probably be disappointed. They just don't, especially if you appreciate strong bass. Detail in the mids and highs are outstanding; no notes. Crisp, sparkly, but not fatiguing. The low end lacks any 'oomph.' I suppose that is mostly to do with how open they are. There is none of the sound pressure you feel from over-the-ear sets. If you try to force them with EQ, you get a ton of distortion. Their comfort is amazing. That is what you get in the trade for the bass, and I think the compromise is a fair one in the right usage case. I forget that I'm wearing these. They're a dream. Getting them adjusted properly is a bit fidgety, but it can be done. They're so light, the clamp force is just right, and the ear pads are soft & breathable. No noise cancellation to speak of; you will be very aware of your surroundings. Whether that is a positive or negative is up to you. Avoid using at high volumes in quiet public places, sound bleeding is significant; don't be *that* person. These are great for casual listening. Teleconferencing. I think they would be amazing for gaming. I have headphones that sound better for not a lot more money, but they're big, hot, and uncomfortable. I reach for the Koss KPH40 far more often. They are not "the best headphones under $200!!!!," but they may be the best for you during most points of the day.

## Frequently Bought Together

- Koss KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black)
- YAXI EARPADS for Koss PORTAPRO (Black)
- Koss KSC75 Portable On-Ear Clip Headphones, Retro Style, Ultra Lightweight, Silver and Black

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-03-14*