---
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: "3175728₫"
currency: VND
in_stock: true
reviews_count: 5
category: "Koss"
url: https://www.desertcart.vn/products/565138913-koss-x-retrospekt-p-21-retro-on-ear-headphones-retro
store_origin: VN
region: Vietnam
---

# 30-17,000 Hz frequency range 104 dB sensitivity for rich audio 32 Ohms impedance for balanced sound 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:** 3175728₫
**Availability:** ✅ In Stock

## Summary

> 🎶 Rock the retro look, feel the future of sound!

## 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?** 3175728₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/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 Style:** Flexible, size-adjustable headband guarantees a perfect fit for every head shape.
- • **Lightweight Durability:** Ultra-light stainless steel frame ensures all-day comfort without compromising on toughness.
- • **Plug & Play Simplicity:** Universal 3.5mm wired connection works seamlessly with all your favorite devices.
- • **Open-Back Audio Freedom:** Hear-through design delivers an expansive soundstage that immerses you in every beat.
- • **Vintage Vibes, Modern Sound:** Classic retro orange foam meets Koss' cutting-edge audio tech for a nostalgic yet premium listening experience.

## Overview

The x Retrospekt P/21 Retro On-Ear Headphones combine iconic 80s style with Koss' advanced audio technology, featuring a 30-17,000 Hz frequency response, 32 Ohm impedance, and 104 dB sensitivity. Lightweight stainless steel construction and an adjustable headband ensure comfort and durability, while the open-back design offers an immersive listening experience through a wired 3.5mm connection compatible with any audio device.

## 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 | #8,393 in Electronics ( See Top 100 in Electronics ) #48 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 Vietnam*
*Store origin: VN*
*Last updated: 2026-01-24*