---
product_id: 565138913
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: "$129.12"
currency: USD
in_stock: true
reviews_count: 5
category: "Koss"
url: https://www.desertcart.us/products/565138913-koss-x-retrospekt-p-21-retro-on-ear-headphones-retro
store_origin: US
region: United States of America
---

# 104 dB sensitivity for rich sound 30-17,000 Hz frequency range 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:** $129.12
**Availability:** ✅ In Stock

## Summary

> 🎶 Rock the retro look with next-level sound clarity!

## 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?** $129.12 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/565138913-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

- • **Adjust to Your Beat:** Flexible, size-adjustable headband for a perfect fit every time
- • **Open-Back Experience:** Hear-through design delivers expansive, immersive soundstage
- • **Plug & Play Simplicity:** Universal 3.5mm wired connection for seamless compatibility
- • **Comfort Meets Durability:** Ultra-lightweight stainless steel frame designed for all-day wear
- • **Vintage Vibes, Modern Sound:** Iconic retro orange foam with Koss' signature audio clarity

## Overview

The Koss x Retrospekt P/21 Retro On-Ear Headphones blend nostalgic 80s style with modern audio technology, featuring a 30-17,000 Hz frequency response, 104 dB sensitivity, and a durable adjustable stainless steel headband. Designed for wired 3.5mm connectivity, these lightweight headphones offer an open-back design that delivers an expansive listening experience, perfect for music lovers craving both style and sonic richness.

## 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.

Review: The sound quality is very good, even if the frequency range spec says 30-17,000Hz. Light weight and comfortable. Yes, others can hear what you are listening to, like in the 80's. Best Sony's style 70's headphones I can find today. Bought this to match my newly purhcased cassette tape walkman.
Review: Mejor de lo qué esperaba, la calidad del sonido te lleva a los 80 y los materiales son muy buenos.

## 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
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B092DX27G9 |
| Age range (description) | Adult |
| Best Sellers Rank | #17,672 in Electronics ( See Top 100 in Electronics ) #65 in On-Ear Headphones |
| Cable feature | Retractable |
| Compatible devices | Any audio device with a 3.5mm audio jack or wireless capabilities |
| Connectivity technology | Wired |
| Control method | Remote |
| Control type | Media Control |
| Frequency response | 17000 Hz |
| Headphone jack | 3.5 mm Jack |
| Included components | Cable |
| Item model number | P/21 |
| Manufacturer | Koss |
| Material | Metal |
| Model name | P21 |
| Noise control | None |
| Number of Items | 1 |
| Package Dimensions | 22.2 x 15.29 x 5.51 cm; 109 g |
| Package type | FFP |
| Recommended uses for product | Calling, Gaming, Music |
| Sensitivity | 104 dB |
| Specific uses for product | Music |
| Style | Retro |
| Unit count | 1 Count |
| Water resistance level | Not Water Resistant |
| Wireless communication technologies | Bluetooth |

## Product Details

- **Brand:** Koss
- **Colour:** Retro 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)

## 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***E on 14 November 2025*

The sound quality is very good, even if the frequency range spec says 30-17,000Hz. Light weight and comfortable. Yes, others can hear what you are listening to, like in the 80's. Best Sony's style 70's headphones I can find today. Bought this to match my newly purhcased cassette tape walkman.

### ⭐⭐⭐⭐⭐ Review
*by D***N on 15 December 2025*

Mejor de lo qué esperaba, la calidad del sonido te lleva a los 80 y los materiales son muy buenos.

### ⭐⭐⭐ Review
*by B***I on 11 January 2025*

I bought them for the looks hoping they sound as good as porta pro or kph40 but nah these are worse in sound.

## Frequently Bought Together

- Koss x Retrospekt P/21 Retro On-Ear Headphones, Retro Orange Foam, Adjustable Headband, Wired 3.5mm Plug, Orange Black and Silver
- Guardians Of The Galaxy: Awesome Mix Vol. 1
- Maxell UR 90 Normal Bias Blank Audio Recording Cassette Tape, Low Noise, 90 Minute Recording Time, 5 Pack

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-10*