Koss QZ-99 Noise Reduction Stereophone

Other products by Koss

Product Details

• Product Dimensions: 9 x 8.5 x 4.2 inches ; 1.6 pounds
• Shipping Weight: 2 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000051SD1
• Item model number: QZ99
• Average Customer Review: 4.1 out of 5 stars  See all reviews (35 customer reviews)
• Amazon.com Sales Rank

  Popular in these categories: (What's this?)

  #34 in	Electronics > Accessories & Supplies > Headphones > Noise-Canceling Headphones
  #58 in	Electronics > Accessories & Supplies > Headphones > Over-the-Head Headphones

• Discontinued by manufacturer: Yes
• Date first available at Amazon.com: September 4, 1973

Product Description

Amazon.com Product Description

The Koss QZ99 headset is a passive noise-reduction stereophone system that isolates the listener from ambient sounds, allowing clear and focused listening of the intended aural signal. Ideal for use with racing scanners and metal detectors, it includes a volume control on the earcup for easy level adjustment, a stereo/mono switch for added flexibility, and a single entry, 8 foot coiled cord.

Product Description

The QZ-99 Noise Reduction Stereophone features revolutionary Passive Noise Reduction stereophone system that isolates listener from ambient sounds. It is ideal for use with racing scanners and metal detectors. The features include volume control on earcup for easy level adjustment, Stereo/Mono switch for added flexibility and single entry, 8 foot coiled cord.

See all Product Description

Customer Reviews

Most Helpful Customer Reviews

19 of 20 people found the following review helpful:

4.0 out of 5 stars Excellent for listening to narration, March 18, 2002

By A Customer

The Koss QZ-99 is a very nice product, for certain things. I would never recommend this type of product, without knowing the context. I use it for listening to books on tape, on the street or in a gym, on an old portable tape player. Since I am just listening to narration, I care much more about outside sound being blocked out than I care about sound quality. If you use Bose headphones in this context, you are going to get much better sound, but that is a drawback: you will hear the crackles and rattles and pops on the your 8 year old Walkman and the 5 year old library book-on-tape. Noise reducing headphones can be too good. If I were listening to classical music on a CD player, in an airplane, a higher quality, and/or active noise reducing product would be better. But for my situation the Koss is very nice. I did not realize, until recently, that I could swivel the ear pads as well a lengthen and shorten the band between the pads. It works very well.

13 of 14 people found the following review helpful:

5.0 out of 5 stars Serious noise blocking, July 27, 2006

By	Cisco Kid "Cisco Kid" (Middle of nowhere) - See all my reviews

These headphones are basically a pair of noise blocking earmuffs with speakers inside.

These are NOT light, NOT small and not the most comfortable.

BUT they are the absolute best noise blocking headphones I have ever used. They are Noise blockers first, headphones second.

I use mine to listen to music while I mow my lawn, I also wear them during target practice. I would not use them for travelling or in the office but thats ok.

Every one who mows their own lawn, works in a machine shop, or works around very loud areas should own a pair of these. Protect your hearing and listen to music at the same time.

22 of 27 people found the following review helpful:

4.0 out of 5 stars Slightly Sound Proof, September 29, 2001

By	Dale A. Crum Jr. "doc4" (United States of America) - See all my reviews (REAL NAME)

Overall I enjoy these headphones. I love the way the look and feel, the weight of them and the comfort factor. I have only a few complaints; One, they are not as sound proof as I was hoping they would be. Random noises still manage to creep in and disturb the your listening. Two, Although they don't hurt at all to wear for long periods of time, if by chance, someone knocks on the ear piece your in for a world of hurt my friend. Three, I bought a [less expensive] pair of headphones for [a few] dollars and noticed the bass and treble are slightly better than in the KOSS pair. At times I wondered if too much bass would blow them out or if they were really designed for music at all.

I'm not saying KOSS isn't a great headphone maker, but if your looking for something soundproof avoid these headphones. If your looking to block out ambient noise and the majority of sounds then these are definitley yours all the way. Very comfortable and well made, KOSS is an amazing company I was looking for total soundproof protection though. In the end I kept them and still use them for my music. I very much enjoyed this product and highly recommend it to anyone out there.