---
product_id: 631809385
title: "Koss x Retrospekt P/21 Retro On-Ear Headphones, Retro Orange Foam, Adjustable Headband, Wired 3.5mm Plug, Orange Black and Silver"
brand: "koss"
price: "₩220134"
currency: KRW
in_stock: true
url: https://www.desertcart.kr/products/631809385-koss-x-retrospekt-p-21-retro-on-ear-headphones-retro
store_origin: KR
region: South Korea
---

# 30-17,000 Hz frequency range Wired 3.5mm plug with 4ft retractable cord Adjustable stainless steel headband Koss x Retrospekt P/21 Retro On-Ear Headphones, Retro Orange Foam, Adjustable Headband, Wired 3.5mm Plug, Orange Black and Silver

**Brand:** koss
**Price:** ₩220134
**Availability:** ✅ In Stock

## Summary

> 🎧 Own the Retro Sound Revolution – Because Classic Never Goes Out of Style

## Quick Answers

- **What is this?** Koss x Retrospekt P/21 Retro On-Ear Headphones, Retro Orange Foam, Adjustable Headband, Wired 3.5mm Plug, Orange Black and Silver by koss
- **How much does it cost?** ₩220134 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/631809385-koss-x-retrospekt-p-21-retro-on-ear-headphones-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

- • **Plug In & Play Anywhere:** Universal 3.5mm wired connection compatible with all your favorite devices—no Bluetooth fuss.
- • **Built to Last with Style:** Durable metal frame and limited lifetime warranty make these headphones a timeless investment.
- • **Retro Vibes, Modern Sound:** Classic orange foam meets Koss' cutting-edge audio tech for rich, immersive sound.
- • **Hear-Through Open-Back Design:** Experience expansive, natural soundstage that keeps you connected to your environment.
- • **Tailored Fit, All-Day Comfort:** Ultra-lightweight stainless steel adjustable headband ensures a perfect fit for every head.

## Overview

The Koss x Retrospekt P/21 Retro On-Ear Headphones combine iconic 1970s-inspired design with modern audio performance. Featuring a 30-17,000 Hz frequency response, 32 Ohm impedance, and 104 dB sensitivity, these wired headphones deliver rich, expansive sound through an open-back design. The adjustable stainless steel headband and lightweight build ensure comfort and durability, while the 3.5mm retractable cord offers universal compatibility. Perfect for music lovers craving vintage style with contemporary quality.

## Description

The ultimate retro headphones, made by Koss and available exclusively from Retrospekt. They combine classic orange foam and a flexible and adjustable metal band to provide an unmatched throwback look, but are so much more than just aesthetics. Powered by Koss technology, these stereophones offer state-of-the-art sound reproduction and intensity for unmatched sonic richness.

## Features

- Frequency Response: 30-17,000 Hz - Impedance: 32 Ohms - Sensitivity: 104 dB SPL - 4 foot Cord
- Hear-through open-back design that delivers an exceptional, expansive listening experience
- Durable, ultra lightweight stainless steel design
- Integrated size-adjustable headband
- Limited Lifetime Warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Noise Control | None |
| Frequency Response | 17000 Hz |
| Sensitivity | 104 dB |
| Headphones Jack | 3.5 mm Jack |
| Model Name | Retro On-Ear Headphones |
| Connectivity Technology | Wired |
| Wireless Communication Technology | Bluetooth |
| Included Components | Cable, Ear Cushions, Headband |
| Age Range (Description) | Adult |
| Material | Metal |
| Specific Uses For Product | Music |
| Recommended Uses For Product | Calling, Gaming, Music |
| Compatible Devices | Any audio device with a 3.5mm audio jack or wireless capabilities |
| Control Type | Media Control |
| Cable Feature | Retractable |
| Water Resistance Level | Not Water Resistant |
| Customer Package Type | FFP |
| Style | Retro |
| Control Method | Remote |
| Number of Items | 1 |
| Controller Type | Wired |
| Audio Driver Type | Dynamic Driver |
| Carrying Case Material | Stainless steel |
| Earpiece Shape | On-Ear |
| Hardware Interface | 3.5mm Audio |
| UPC | 021299197639 021299196670 |
| Input Device Interface | Audio jack |
| Special Feature | Adjustable Headband |
| Manufacturer | Koss Corporation |
| Model | P/21 |
| Package Dimensions | 22.2 x 15.29 x 5.51 cm; 109 g |
| Item model number | P/21 |
| Special Features | Adjustable Headband |
| Batteries Included | No |
| Batteries Required | No |
| Cable feature | Retractable |
| Country of Origin | USA |
| Item Weight | 109 g |

## Product Details

- **Brand:** Koss
- **Colour:** Orange
- **Ear Placement:** On Ear
- **Form Factor:** On Ear
- **Impedance:** 32 Ohms

## Images

![Koss x Retrospekt P/21 Retro On-Ear Headphones, Retro Orange Foam, Adjustable Headband, Wired 3.5mm Plug, Orange Black and Silver - Image 1](https://m.media-amazon.com/images/I/716Ss8sYruL.jpg)
![Koss x Retrospekt P/21 Retro On-Ear Headphones, Retro Orange Foam, Adjustable Headband, Wired 3.5mm Plug, Orange Black and Silver - Image 2](https://m.media-amazon.com/images/I/71Z-84VSIkL.jpg)
![Koss x Retrospekt P/21 Retro On-Ear Headphones, Retro Orange Foam, Adjustable Headband, Wired 3.5mm Plug, Orange Black and Silver - Image 3](https://m.media-amazon.com/images/I/61oHG7kx8eL.jpg)
![Koss x Retrospekt P/21 Retro On-Ear Headphones, Retro Orange Foam, Adjustable Headband, Wired 3.5mm Plug, Orange Black and Silver - Image 4](https://m.media-amazon.com/images/I/71ApUngkdFL.jpg)
![Koss x Retrospekt P/21 Retro On-Ear Headphones, Retro Orange Foam, Adjustable Headband, Wired 3.5mm Plug, Orange Black and Silver - Image 5](https://m.media-amazon.com/images/I/71vOR-Z14rL.jpg)

## Questions & Answers

**Q: Are these essentially the same as the KPH40?**
A: looks like it except for the orange foam cushion.  mine sound clear and bright, great midrange and presence.

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-03*