---
product_id: 311367469
title: "Koss QZ-77 Active Noise Reduction Ear Plug System"
brand: "koss"
price: "₨2845"
currency: SCR
in_stock: true
reviews_count: 5
category: "Koss"
url: https://www.desertcart.sc/products/311367469-koss-qz-77-active-noise-reduction-ear-plug-system
store_origin: SC
region: Seychelles
---

# Dynamic stereo element covers 10-20,000Hz range Active noise reduction cuts low-frequency noise Custom-fit ear cushions for max isolation Koss QZ-77 Active Noise Reduction Ear Plug System

**Brand:** koss
**Price:** ₨2845
**Availability:** ✅ In Stock

## Summary

> 🔕 Tune out the noise, tune into your world.

## Quick Answers

- **What is this?** Koss QZ-77 Active Noise Reduction Ear Plug System by koss
- **How much does it cost?** ₨2845 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/311367469-koss-qz-77-active-noise-reduction-ear-plug-system)

## 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

- • **Tailored Comfort:** Specialty ear cushions mold slowly to your ear canal for a personalized, secure fit.
- • **Silence the Chaos:** Advanced active noise reduction silences jet engines and subway rumbles alike.
- • **Full Spectrum Sound:** Dynamic stereo phone element delivers clear audio across a wide 10-20,000Hz frequency range.
- • **Travel-Ready Design:** Compact, lightweight metal build fits discreetly and comfortably for hours on the go.
- • **Reliable Passive Protection:** Even without batteries, enjoy solid passive noise isolation in noisy environments.

## Overview

The Koss QZ-77 Active Noise Reduction Ear Plug System combines wired connectivity with advanced active noise cancellation technology to reduce harmful low-frequency sounds. Featuring custom-molding ear cushions and a dynamic stereo element spanning 10-20,000Hz, it offers both comfort and clear audio for travelers and commuters seeking effective noise isolation.

## Description

Koss QZ-77 Active Noise Reduction Ear Plug System

Review: Things I liked about these earplugs: (1) They look cheap. And I don't want to be mugged. (2) Contrary to what other people stated in their reviews, I found the noise cancellation pretty good. I was traveling right beside the plane jets and when I turned the noise cancellation on (without even turning on my ipod), the hiss of the jets would nearly die out. (3) The passive noise reduction is pretty good too. I forgot to buy batteries and was using it without the noise cancellation in the subways and I say it was worth it. (4) the sound quality is decent. But don't expect that any amount of money you expend on earplugs is going to buy you bose-like bass. Bad things: (1) They go deep into the ear canal. I can't wear them for too long. In the beginning it is not uncomfortable. The rubber in the earplugs is soft enough. But after like three hours I want to take them off. All in all, I think this is a good option for noise-cancelling earplugs, even without taking price into consideration. But don't expect any earplugs to compare to $500 bose earphones.
Review: Works as intended.

## Features

- Reduces harmful and annoying low frequency sounds in noisy environments
- Specialty ear cushion material forms slowly in ear canal providing a custom fit and maximum isolation
- Dynamic stereo phone element for extended frequency response (10 - 20, 000Hz)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000HQ1RGI |
| Connectivity technology | Wired |
| Headphone jack | 3.5 mm Jack |
| Item model number | QZ77 |
| Item weight | 454 g |
| Manufacturer | Koss |
| Material | Metal |
| Model name | Koss |
| Number of Items | 1 |
| Package type | standard packaging |
| Product Dimensions | 2.54 x 2.54 x 2.54 cm; 453.59 g |
| Specific uses for product | Travel |
| Unit count | 1.0 Count |

## Product Details

- **Brand:** Koss
- **Colour:** Silver
- **Ear placement:** In Ear
- **Form factor:** In Ear
- **Noise control:** Active Noise Cancellation

## Images

![Koss QZ-77 Active Noise Reduction Ear Plug System - Image 1](https://m.media-amazon.com/images/I/51alTWVh-dL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ Review
*by R***O on 24 March 2009*

Things I liked about these earplugs: (1) They look cheap. And I don't want to be mugged. (2) Contrary to what other people stated in their reviews, I found the noise cancellation pretty good. I was traveling right beside the plane jets and when I turned the noise cancellation on (without even turning on my ipod), the hiss of the jets would nearly die out. (3) The passive noise reduction is pretty good too. I forgot to buy batteries and was using it without the noise cancellation in the subways and I say it was worth it. (4) the sound quality is decent. But don't expect that any amount of money you expend on earplugs is going to buy you bose-like bass. Bad things: (1) They go deep into the ear canal. I can't wear them for too long. In the beginning it is not uncomfortable. The rubber in the earplugs is soft enough. But after like three hours I want to take them off. All in all, I think this is a good option for noise-cancelling earplugs, even without taking price into consideration. But don't expect any earplugs to compare to $500 bose earphones.

### ⭐⭐⭐⭐ Review
*by K***O on 10 November 2024*

Works as intended.

### ⭐⭐⭐ Review
*by A***R on 7 June 2018*

Headphones with great potential, but several flaws that bring it down. I had to return 1st set because right speaker was not working. 2nd set works fine, but cables on this set are not the most resiliant and considering they carry additional wires for the noise cancelling microphones it's expectable they won't last. Noise cancelation capability is actually quite good, giving you only slight hiss and making noisy flight very bearable. Advantage I appreciate is they don't make your ears hot like the noise cancelling sets sitting outside around your ears. However they do get uncomfortable after several hours. I'm used to wear Koss Plug without any problems for many hours at a time, but these QZ77 still get uncomfortable much sooner. Unlike the Plug these headphones also sit partially on your head/ear with the plastic, not just on the foam plug, so they transfer vibrations from walking, giving unpleasant bass at every step. Last negative is poor insulation from induction noise caused by data transfers on your phone. At first I thought cable is already getting broken, but when in flight mode, sound from my phone became crystal clear. These headphones will pick-up noise during heavy data transfers on the phone.

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-05-04*