Koss QZ-99 Technology Stereo Headphone - 134122
Binaural - Ear-cup

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Koss QZ-99 Technology Stereo Headphone
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Product Summary
Manufacturer: Koss
Mfg Part#: 134122
UPC: 00021299134122
Buy.com Sku: 10283066
Item#: C6LK2K
Buy.com Sales Rank: 7884
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New advances in materials and design have served to expand the performance of stereo phones. Koss Product Development team and engineers look for the most innovative combinations of existing and new technologies to deliver the most exciting products possible.
 
Features
Earpiece Design   Over-the-head
Connectivity Technology   Wired
Manufacturer   Koss Corporation
Earpiece Type   Binaural
Manufacturer Part Number   QZ99
Standard Warranty   Lifetime Limited
Manufacturer Website Address   www.koss.com
Host Interface   Phono
Form Factor   Ear-cup
Weight   15 oz
Product Name   QZ-99 Technology Stereo Headphone
Product Type   Headphone

 
Tech Specs
Connectivity Technology   Wired
Host Interface   Phono
Earpiece Technology   Dynamic
Manufacturer   Koss Corporation
Earpiece Controls   Volume
Earpiece Design   Over-the-head
Standard Warranty   Lifetime Limited
Manufacturer Part Number   QZ99
Additional Information  
  • Passive Noise Reduction stereo phone system isolates listener from ambient sounds
  • Ideal for use with racing scanners and metal detectors
  • Ear Cushions: closed
  • Cord: Coiled, single entry
  • Operating Distance   96"
    Form Factor   Ear-cup
    Earpiece Type   Binaural
    Manufacturer Website Address   www.koss.com
    Sound Mode   Stereo
    Brand Name   Koss
    Distortion   < 0.3%
    Shipping Dimensions   4.25" Height x 8.50" Width x 9" Depth
    Impedance   60 Ohm
    Weight   15 oz
    Minimum Frequency Response   40 Hz
    Shipping Weight   1.60 lb
    Earpiece Sensitivity   102 dB SPL/1 mW
    Maximum Frequency Response   20 kHz
    Product Name   QZ-99 Technology Stereo Headphone
    Product Type   Headphone

      
    Product Image


    Customer Reviews
    Value 5
    Performance 4.5
    Ease of Use 4.5
    Overall Satisfaction 5
    Write a Review


     
    5 of 5 Spectacular Durability Wednesday, November 11, 2009
    Matt S from Oregon  

    I've owned these headphones for over four years now, and have used them heavily. I work in a cube farm with obnoxious neighbors, and I have the phones on for on average about 6 hours per day, every day of the workweek. I haven't been gentle with them, yet they are still going strong, with no mechanical issues whatsoever. The durability is way above and beyond what I ever could have expected. The audio quality isn't as good as you'd find in studio cans, but its considerably better than your average active noise-cancelling headphones. As for the noise-cancelling itself, since the phones are passive rather than active, everything is blocked out, not just background noise. Active noise-cancelling excels at blocking out background noise, but does little to eliminate conversations or other inconsistent noises, which almost defeats the purpose of noise-cancelling in a work environment. These passive headphones avoid this critical weakness, and do so without needing frequent battery replacements like active noise-cancelling phones require. These headphones are virtually indestructible, and they perform as advertized. I've had similar experiences with other Koss headphones, and will never buy anything else.
     
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    1 of 1 customers found this review helpful.
     
    5 of 5 Outstanding Value! Wednesday, April 29, 2009
    A Customer from Lansing Michigan  
    They work very well at cutting down the outside noise and are comfortable to wear for long periods. The build quality is also exceptional. I use them mainly to listen to music while mowing and it's amazing at how well they cut out the noise of the mower.
     
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    5 of 5 Best headphones for the money!! Sunday, January 11, 2009
    Kris W from Lakeland, Fl  
    These are the best headphones for the price, period. They are comfortable for hours on end and cancel most of the external noise. I originally borrowed these from a friend when my old headphones broke and then decided I needed a set for myself. The sound quality is excellent and they work equally good on my laptop, home stereo, and even the airplane! I highly recommend these to anyone wanting a great headset at a low price. For what they cost, you can buy them just to try them out and then give them away if you don't like them! Only the truly high maintenance individual will have any problems with them at all!!
     
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    0 of 1 customers found this review helpful.
     
    5 of 5 Excellent purchase excellent service Monday, October 27, 2008
    anonymous from Apple Valley, California  
    Buy.com offered the Koss Headpones at a great price, delivered them incredibly fast, and was in every way courteous and professional. I highly recommend them to anyone for quality merchandise, at a bargain price, delivered as fast and professionally as any seller I have come across online.
     
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    5 of 5 Great noise reduction headphones Monday, October 13, 2008
    joan.bishop from toledo, ohio  
    I bought the headphones to use at my office as I work in a noisy atmosphere. I am very happy with the noise reduction. I can barely hear my phone ring and it sits right next to me! The headphones are big in size, a little bulky but they come with a long cord and are flexible for sizing. The sound is very good as well. I had KOSS headphones that I purchased probably 15 years ago and they just recently fell apart from use! I'm glad that I stayed with the same manufacturer.
     
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    5 of 5 Great headphones. Wednesday, January 16, 2008
    Matt from Buffalo, NY  
    For the price, you can't beat these Koss headphones. They block out enough noise to make listening that much more enjoyable. Having a volume control is also nice. The only issue I have is that there's no left/right label. I'm assuming that the volume knob is on the right, but I haven't tested to confirm it yet. The sound quality is great enough for me to not care that much.
     
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    5 of 5 The Best "Phones" Tuesday, March 13, 2007
    A Customer from Melbourne, FL  
    I have owned Koss headphones for 33 years.My Pro4-AA's finally gave out and i was using a pair of Realistics, made by Koss, until i found THESE!!!!! with mono-stereo capability switch and volume knob on the earpiece!!! - wales
     
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    5 of 5 Koss headphones are still the best Monday, March 12, 2007
    A Customer from sioux falls, south dakota  
    I've worked in Radio since 1981, and have been using Koss headphones since 1979. The durability of their product is 2nd to none and the sound reproduction is absolutely amazing!!! The Koss QZ99 have the sound that makes it easy for me to do my job without worrying about a loss of signal from the source.
     
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