--- product_id: 412277143 title: "KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black)" brand: "koss" price: "$123.08" currency: USD in_stock: true category: "Koss" url: https://www.desertcart.us/products/412277143-kph40-utility-on-ear-headphones-detachable-interchangeable-cord-system-retro store_origin: US region: United States of America --- # Open-back on-ear design Ultra lightweight stainless steel chassis Detachable interchangeable cords KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black) **Brand:** koss **Price:** $123.08 **Availability:** ✅ In Stock ## Summary > 🎶 Retro style meets next-level utility—hear the difference, feel the freedom. ## Quick Answers - **What is this?** KPH40 Utility On-Ear Headphones, Detachable Interchangeable Cord System, Retro Style, Ultra Lightweight Design (Stealth Black) by koss - **How much does it cost?** $123.08 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/412277143-kph40-utility-on-ear-headphones-detachable-interchangeable-cord-system-retro) ## 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 - • **Featherlight Comfort:** Ultra lightweight stainless steel frame and soft foam cushions keep you comfortable during long workdays or workouts. - • **Plug & Play Simplicity:** No batteries, no fuss—just pure wired audio performance with zero latency and no compatibility headaches. - • **Retro Vibes, Modern Sound:** Classic 80s-inspired design meets audiophile-grade clarity with punchy bass and crisp mids/highs for a timeless listening experience. - • **Seamless Device Switching:** Detachable 3.5mm, USB-C, and Lightning cords let you effortlessly connect across all your gadgets—future-proof your audio setup. - • **Audiophile-Approved Performance:** 60 Ohm impedance and 101 dB sensitivity deliver rich, immersive sound that outperforms pricier competitors. ## Overview The Koss KPH40 Utility On-Ear Headphones combine a retro open-back design with ultra lightweight stainless steel construction and a versatile detachable cord system. Engineered for audiophile sound quality with 60 Ohm impedance and 101 dB sensitivity, these headphones deliver punchy bass and clear mids/highs without the need for batteries. Compatible with 3.5mm, USB-C, and Lightning connections, they offer seamless device switching and all-day comfort with soft foam cushions. ## Description The Koss KPH40 Utility On-Ear Headphone is part of the Koss Utility Series, an all-new listening experience that features three new headphones, three new cords and one seamless experience where everything works together. No batteries, no audio compromises, no compatibility issues. It's that simple. Included with every Koss Utility Series Headphones is a detachable 3.5mm standard headphone jack cord. Need more options? Bundle the available USB-C or Lightning Utility cords (includes in-line microphone & remote) and connect to other devices you own. Koss Utility Series features a detachable cord system giving listeners the flexibility to seamlessly swap between devices, allowing you to connect to the devices you own now or in the future. What's Included? KPH40 Utility, 3.5mm Utility Cord. ## 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 | 743 in In-Ear Headphones | | Box Contents | Cable | | Brand Name | Koss | | Cable Features | Detachable | | Colour | Grey | | Compatible Devices | Devices with 3.5 mm audio jack, certain Android devices with USB-C, and Apple devices with Lightning connections | | Control Method | Touch | | Control Type | Media Control | | Country of Origin | China | | Customer Package Type | FFP file | | Customer Reviews | 4.4 4.4 out of 5 stars (962) | | Earpiece Shape | On-Ear | | Enclosure Material | Stainless Steel | | Frequency Range | 20 Hz - 20,000 Hz | | Frequency Response | 25000 Hz | | Headphone Form Factor | On Ear | | Headphone Jack | 3.5 mm Jack | | Headphones Ear Placement | On Ear | | Impedance | 60 Ohms | | Is Autographed | No | | Item Weight | 0.11 Kilograms | | Manufacturer | Koss | | Model Name | KPH40 Utility | | Model Number | KPH40 Utility Parent | | Network Connectivity Technology | Wired | | Noise Control | None | | Number of Items | 1 | | Product Features | Lightweight | | Sensitivity | 101 dB | | Specific Uses For Product | Running, Exercising | | Style Name | open-back | | Theme | Retro | | UPC | 021299197455 | | Unit Count | 1.0 count | | Water Resistance Level | Not Water Resistant | | Wireless Technology Type | Bluetooth | ## Product Details - **Brand:** Koss - **Colour:** Grey - **Ear placement:** On Ear - **Form factor:** On Ear - **Frequency response:** 25000 Hz - **Headphone jack:** 3.5 mm Jack - **Impedance:** 60 Ohms - **Model name:** KPH40 Utility - **Noise control:** None - **Sensitivity:** 101 dB ## Images ![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/51Sm7vzebiL.jpg) ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/412277143-kph40-utility-on-ear-headphones-detachable-interchangeable-cord-system-retro](https://www.desertcart.us/products/412277143-kph40-utility-on-ear-headphones-detachable-interchangeable-cord-system-retro) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-09*