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  • Koss QZ-Pro Active Noise Cancellation Stereophone
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Koss QZ-Pro Active Noise Cancellation Stereophone

by Koss

List Price: $59.99
Price: $42.93 & FREE Shipping. Details
You Save: $17.06 (28%)
Only 4 left in stock.
Ships from and sold by Amazon.com. Gift-wrap available.
  • Delivers Combination Of Passive and Active Noise Reduction (Anr)
  • Soft Vinyl, Closed Cushions Create A Seal Around The Ear
  • Active Noise Reduction Circuitry Built Directly Into The Ear Cups
  • Noise Reduction Circuitry Can Be Turned On and Off With A Flip Of A Switch
  • Reduces harmful and annoying low frequency sounds in noisy environments
  • Closed leatherette ear cushion for added passive noise reduction
  • Dynamic stereophone element for extended frequency response (40-20,000Hz)
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39 new from $28.51 2 used from $14.00

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$42.93 & FREE Shipping. Details Only 4 left in stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

Koss QZ-Pro Active Noise Cancellation Stereophone + Koss PORTABLE Replacement Cushions
Price for both: $46.92

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Technical Details

  • noise-cancellation

Product Description

The Koss Quiet Zone QZ PRO stereophone delivers a winning combination of passive and active noise reduction (ANR) for music lovers who are looking for a little peace and quiet on the go.Designed with soft, vinyl closed cushions that create a seal around the ear, the QZ PRO creates a passive, mechanical seal that reduces ambient noise while retaining bass frequencies.Koss’s active noise reduction circuitry is built directly into the earcups using tiny microphones that sense surrounding low frequency. Information about the undesirable sound waves is processed through the circuitry and creates an "anti-wave." The sound wave and "anti-wave" counteract each other at the wearer’s ear, reducing the irritating low frequency noise and increasing listening pleasure.Designed to reduce low frequency, repetitive noise, the QZ PRO is most effective at blocking out noises you want to eliminate while not affecting things you want to hear- like voice and music.

Product Details

  • Product Dimensions: 6.5 x 3.5 x 9.8 inches ; 1 pounds
  • Shipping Weight: 1.1 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B00029TLMW
  • Item model number: QZ-Pro
  • Batteries 2 AA batteries required.
  • Average Customer Review: 3.0 out of 5 stars  See all reviews (26 customer reviews)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
  • Date first available at Amazon.com: May 20, 2004

Customer Questions & Answers

Customer Reviews

The noise cancellation isn't that good.
Anon_nonA
This process looks like it could tear the super thin fabric on the first try... Cord is too short.
BRUTL1
I've had the Koss QZ-Pro headphones for several years and cannot recommend them to anyone.
Rick_E

Most Helpful Customer Reviews

29 of 31 people found the following review helpful By D. Fredriksen on January 4, 2006
I asked for, and received, these for Christmas. I tried them without the noise canceling feature enabled. They are closed-ear and do reduce ambient noise from the environment (about the same as any other closed-ear phones). I was very disappointed to find that when I turned on the noise cancellation, it actually INTRODUCED MORE noise. They apparently have poorly designed amplification circuitry and there is a signficant amount of hiss when the noise cancellation is turned on. I have not yet evaluated their ability to cancel low frequency sounds (like road and aircraft noise) but the high frequency hiss makes them unacceptable for listening to music with this feature turned on.

Bottom line: they are a little pricey for use as low end closed-ear headphones, which is their only suitability. Buy a pair of Sennheiser HD201's or HD202's for this purpose at half the price. If you want noise cancellation, buy something else.
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13 of 13 people found the following review helpful By S. Parshley on January 15, 2007
The sound is mediocre to subpar and the fit is painful. The noise cancelation depends on a skull-crushing fit to be effective. I got these as a gift and I'm certain I wouldn't have purchased them on my own (without random and extremely manipulative council or, winning them with a 28% interest credit card).

The AAA battery-powered noise cancellation is a pain in the arse because it is easy to leave it switched on after you take them off. Thus, going through batteries quickly. There is a red LED incicator light but, it is on the right speaker/driver shell and still easy for this dumb bell to notice it on. If the batteries are weak, the sound gets really crappy with extreme bass distortion. Also, after about 10 mins of play (with even new batteries), volume loss is apparent.

This isn't ideal for sports activities so I do not understand why there is such a short cable lead of only about 3 feet(??).

All-in-all, kinda crappy.

-Cooked (pronounced like "crooked")
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15 of 18 people found the following review helpful By ebmanhattan on June 28, 2006
i just bought these at radio shack for $50. the fit is ok but they pinch a bit after a while. the sound is pretty dissapointing. the noise cancellation feature doesn't do a lot and they sound quite muddy. the only thing i do like about them is their size. i will probably return them.
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6 of 6 people found the following review helpful By Francisco D. Villanueva on April 10, 2007
QZ-Pro performs as advertised. Noise cancellation is excellent and you can use the earphone for your mp3 player as well as for the audio the airplane has in the seats. There is one small problem though, the battery placement. It's not easy putting in the battery. Also, the picture advertised is black, but the headphone comes in chrome.
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4 of 4 people found the following review helpful By R. Ford on December 26, 2012
I have had several sets of noise canceling headphones over the years due to suffering from an anxiety disorder. Granted these are not in the league of the Bose Quiet comfort line but they do what they are advertised to do. The hiss people on here seem to complain about is intentional white noise. That is part of the "Active noise cancellation". You don't use that when your listening to music.

They do a good job of both passive and active noise cancellation. They have good sound quality for listening to music and I find them very comfortable. I can wear them for hours without discomfort or headache.

I really don't know what these other reviewers want out of a set of $50 headphones, but if your looking for Bose quality, then pony up the cash and buy the high end ones that you are comparing these to.
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4 of 6 people found the following review helpful By Nick on February 18, 2007
While these headphones sounded decent to me, they became too much of a headache after a couple months.

The plastic >:( part that holds one of the speakers to the headstrap broke I guess because I pulled them too far apart to fit over my head...

Koss replaced them, and the same exact thing happened a month later and it was a brand new pair. I found a piece of metal to brace the crack so it would stay straight and that has worked fine. Apparently they cheaped out on a very important part here.

And last night, they just stopped working all together. I tried them on different music players with no success.

Save yourself the annoyance that I went through with these headphones. Oh and I never even bothered with the noise cancellation feature. It just sounded odd when in use.
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By LVgardner on October 14, 2014
The sound is great. I have to take off my earring in order to prevent the cushion from mashing my ear. The cord is not long enough, I don't know if I can add an extension.

I bought it to create privacy in a two person office. When the other person talks on the phone it distract me from my work. I can still hear him but not as bad. I don't want to turn up the volume to loud because I might not be able to hear my phone ring.
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By Jay Gallagher on January 29, 2010
I have a pair of these. The sound cancelation feature is poor. It does introduce more hiss when it's on than when it's off. It is easy to leave the noise cancelation on and not realize it when the headphones aren't in use. Sound quality is just ok. The cord is too short. Overall I'm really not happy with them. I only wish I had bought a pair of Pro4 AA's. I'm really kicking myself for not getting the Pro4's.
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Koss QZ-Pro Active Noise Cancellation Stereophone
This item: Koss QZ-Pro Active Noise Cancellation Stereophone
Price: $59.99 $42.93
Ships from and sold by Amazon.com