---
product_id: 379307046
title: "Koss KPH40 Utility On-Ear Headphones, Stealth Grey, Interchangeable Cord | Lightweight, Ultra-Wide Frequency Response, Stainless Steel Adjustable Headband"
brand: "koss"
price: "¥12715"
currency: JPY
in_stock: true
category: "Koss"
url: https://www.desertcart.jp/products/379307046-koss-kph40-utility-on-ear-headphones-stealth-grey-interchangeable-cord
store_origin: JP
region: Japan
---

# Open-back design for immersive sound Interchangeable 3.5mm cord for versatile use Stainless steel chassis for durability Koss KPH40 Utility On-Ear Headphones, Stealth Grey, Interchangeable Cord | Lightweight, Ultra-Wide Frequency Response, Stainless Steel Adjustable Headband

**Brand:** koss
**Price:** ¥12715
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your everyday audio with timeless style and unmatched comfort

## Quick Answers

- **What is this?** Koss KPH40 Utility On-Ear Headphones, Stealth Grey, Interchangeable Cord | Lightweight, Ultra-Wide Frequency Response, Stainless Steel Adjustable Headband by koss
- **How much does it cost?** ¥12715 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/379307046-koss-kph40-utility-on-ear-headphones-stealth-grey-interchangeable-cord)

## 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

- • **Seamless device compatibility:** Includes detachable 3.5mm utility cord compatible with all your essential devices—stay connected effortlessly.
- • **Audiophile-grade sound clarity:** Experience ultra-wide frequency response up to 25kHz for crisp highs and deep lows.
- • **Retro style meets modern utility:** Stand out with a sleek stealth grey finish and open-back design that’s as stylish as it is functional.
- • **Built to last with premium materials:** Durable stainless steel adjustable headband blends retro style with modern resilience.
- • **Featherlight comfort for all-day wear:** Ultra-lightweight design (0.11 kg) with soft foam ear cushions keeps you focused, not fatigued.

## Overview

The Koss KPH40 Utility On-Ear Headphones combine audiophile-quality open-back sound with a lightweight stainless steel frame and interchangeable 3.5mm cord, delivering durable, comfortable, and versatile listening for professionals on the move.

## Description

Buy Koss KPH40 Utility On-Ear Headphones, Stealth Grey, Interchangeable Cord | Lightweight, Ultra-Wide Frequency Response, Stainless Steel Adjustable Headband: On-Ear Headphones - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## 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 |
| Additional Features | Lightweight |
| Age Range Description | Adult |
| Antenna Location | Everyday Use, Traveling, Exercising, Recording |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #4,543 in Electronics ( See Top 100 in Electronics ) #112 in On-Ear Headphones #360 in Earbud & In-Ear Headphones |
| Brand Name | Koss |
| Built-In Media | Cable |
| Cable Features | Detachable |
| Color | Stealth Black |
| 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 Package Type | FFP |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,348) |
| Earpiece Shape | Rounded, flat or slightly curved surface |
| Enclosure Material | Stainless Steel |
| Frequency Response | 25000 hertz |
| Headphone Folding Features | On Ear |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | On Ear |
| Impedance | 60 ohm |
| Item Weight | 0.11 kg |
| Manufacturer | Koss |
| Model Name | KPH40 Utility Parent |
| Model Number | KPH40 Utility Parent |
| Noise Control | None |
| Number of Items | 1 |
| Sensitivity | 101 db |
| Style Name | open-back |
| Theme | Retro |
| UPC | 021299197455 |
| Unit Count | 1 Count |
| Warranty Description | Limited Lifetime Warranty |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | Bluetooth |

## Product Details

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

## Images

![Koss KPH40 Utility On-Ear Headphones, Stealth Grey, Interchangeable Cord | Lightweight, Ultra-Wide Frequency Response, Stainless Steel Adjustable Headband - Image 1](https://m.media-amazon.com/images/I/51Sm7vzebiL.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.

## 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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**Shop now:** [https://www.desertcart.jp/products/379307046-koss-kph40-utility-on-ear-headphones-stealth-grey-interchangeable-cord](https://www.desertcart.jp/products/379307046-koss-kph40-utility-on-ear-headphones-stealth-grey-interchangeable-cord)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-12*