Koss QZ-77 Active Noise Reduction Ear Plug System

by Koss

Product Details

• Product Dimensions: 6 x 1.6 x 9.2 inches ; 5.8 ounces
• Shipping Weight: 1 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000HQ1RGI
• Item model number: 157976
• Batteries: 1 AAA batteries required.
• Average Customer Review: 2.8 out of 5 stars  See all reviews (10 customer reviews)
• Date first available at Amazon.com: June 17, 2003

Product Description

Reduces harmful and annoying low frequency sounds in noisy environments - ideal for in-flight use Unique earbud design directs sound into the ear canal for deep bassSpecialty ear cushion material forms slowly in the ear canal to provide a custom fit and maximum isolationFrequency response: 10-20kHzIncludes lanyard and airplane adapter

Customer Reviews

Most Helpful Customer Reviews

11 of 11 people found the following review helpful:

4.0 out of 5 stars good depending on your needs, March 24, 2009

By 

Rafael B. Nonato - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Koss QZ-77 Active Noise Reduction Ear Plug System (Electronics)

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.

2 of 2 people found the following review helpful:

4.0 out of 5 stars Pretty good, February 22, 2009

By 

L. Reed "student mom" (TX) - See all my reviews
(REAL NAME)   

This review is from: Koss QZ-77 Active Noise Reduction Ear Plug System (Electronics)

The noise reduction is good, though the sound quality was just okay and I have had to change the battery with only a month use.

4 of 5 people found the following review helpful:

1.0 out of 5 stars Worthless, December 30, 2007

By 

Jocelin D - See all my reviews

This review is from: Koss QZ-77 Active Noise Reduction Ear Plug System (Electronics)

I purchased these earbuds to use when traveling. They are awkward to use, the sound is tinny with no bass whatsoever, and the noise cancellation is nonexistent. When you turn on the noise cancellation it ups the volume a bit and adds a quiet hiss, you can still hear everything going on around you. I am actually astonished at how awful these earbuds are. I was hoping for a 50% reduction in background noise, instead I have a product that is useless in any situation. Traditional earbuds are far superior. I passed the Koss earbuds on to two other people to try with the exact same results, no one wants them even for free.
Bad product, bad design, waste of money.