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Koss QZ-99 Noise Reduction Stereophone, Standard Packaging,Black

4.2 4.2 out of 5 stars 847 ratings
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Amazon's Choice in Over-Ear Headphones by Koss

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Standard Packaging

Purchase options and add-ons

Brand Koss
Model Name Noise-Cancelling-Feature
Color Black
Form Factor Over Ear
Connectivity Technology Wired

About this item

  • Passive Noise Reduction Headphones.Connectivity Technology: Wired
  • Neodymium Magnet Structures Deliver Outstanding Clarity & Definition
  • Closed Pneumalite(Tm) Ear Cushions & Extra Secure Headband Seal Ears, Eliminate All Ambient Noise
  • Volume Control On Ear Cup Allows Easy Level Adjustment
  • Stereo/Mono Switch Extends User Flexibility
  • Passive noise reduction stereophone system isolates listener from ambient sounds
  • Volume control on earcup for easy level adjustment

Additional Details

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$51.99
Get it as soon as Tuesday, Apr 2
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Koss QZ-99 Noise Reduction Stereophone, Standard Packaging,Black
Koss QZ-99 Noise Reduction Stereophone, Standard Packaging,Black
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Price-13% $51.99
List:$59.99
-10% $314.10
List:$349.00
-20% $39.99
List:$49.99
-20% $40.10
List:$49.99
-13% $32.99
List:$37.99
$69.99
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Noise cancellation
4.2
4.5
3.0
3.0
4.0
4.1
Sound quality
3.9
4.4
4.6
4.6
4.4
4.4
Bass quality
3.6
4.6
4.6
4.3
Volume control
4.6
4.0
4.0
4.2
Quality of material
4.1
4.1
4.2
4.6
Sold By
Amazon.com
RuggedRadios
Koss Stereophones
Amazon.com
OneOdio USA
Koss Stereophones
connectivity tech
Wired
Wired
Wired
Wired
Wired
Wired
headphones form factor
Over Ear
On Ear
On Ear
On Ear
Over Ear
Over Ear
connector type
Headphone Jack
3.5mm Jack
3.5mm Jack
connector type
plug in
Wired
noise control
sound isolation
sound isolation
sound isolation
headphones jack
3.5 mm Jack
3.5 mm Jack
3.5 mm Jack
3.5mm/6.35mm
6.35 mm Jack
cable feature
Retractable
Retractable
The ultra portable on-ear headphones Comfort Zone setting on temporal pad for comfortable secure fit The ultimate active headphones with a collapsible headband design for protective storage Dynamic element for extended frequency response Oxygen-free copper voice coils deliver deep bass and signal clarity Includes a convenient carrying case for protective storage Limited Lifetime Warranty
Retractable
Retractable
Noise isolating professional studio headphones The first dynamic headphones to deliver true full frequency, high fidelity performance Standard-setting design incorporates performance-enhancing technology Superior isolation, accurate sound reproduction and the excitement of a live performance with every recording Durable steel and generously padded rubber headband Adjustable slide bars ensure snug fit 8 foot coiled cord with 6.3 mm (1/4") plug Covered under the Koss Stereophones Limited Lifetime Warranty

What's in the box

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    Product information

    Warranty & Support

    Product Warranty: For warranty information about this product, please click here [PDF ]

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    Koss QZ-99 Noise Reduction Stereophone, Standard Packaging,Black


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    Product Description

    Product Description

    Product Description The QZ99 Passive Noise-Reducing Over-Ear Headphones from KOSS are designed to make the world disappear. Pneumalite(TM) ear cushions and an extra-secure headband help with passive sound isolation, allowing for listening without outside noise. A volume control is located on the ear cup for maximum ease of use.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. From the Manufacturer New advances in materials and design have served to expand the performance of stereophones. 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 Frequency Response: 40-20,000 Hz Passive Noise Reduction stereophone system isolates listener from ambient sounds Ideal for use with racing scanners and metal detectors Volume control on ear cup for easy level adjustment Stereo/Mono switch for added flexibility Single entry, 8 foot coiled cord 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.

    Amazon.com

    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.

    Customer reviews

    4.2 out of 5 stars
    4.2 out of 5
    847 global ratings

    Customers say

    Customers like the sound quality, performance and value of the headphones. For example, they mention that they attenuate ambient sounds well, provide acoustic isolation and that they work well. Some appreciate the volume control. That said, some complain about the weight and fit. Opinions are mixed on comfort and construction.

    AI-generated from the text of customer reviews

    290 customers mention210 positive80 negative

    Customers like the sound quality of the headphones. They say it has great sound, they attenuate ambient sounds well, and provides superb noise cancelling. Some customers also say the sound is good for the price and the acoustic isolation is equal to that provided by other high-end models. Overall, customers are satisfied with the performance and recommend the product to others.

    "...All these complaints, I still give them 5 stars because they block out the sound, have local volume control (that knob on the side) and sound decent...." Read more

    "Worked very well with scanner at NASCAR event. Blocked external noise and delivered clear sound from the scanner." Read more

    "...All they said, the sound quality for the price is unbeatable. Sure there is little bass but these headphones are not meant for bassheads...." Read more

    "...Pros:- Great sound. Both volume and sound quality.- Noise reduction is GREAT on these.- Very snug fit. (see cons also)-..." Read more

    115 customers mention80 positive35 negative

    Customers are mixed about the comfort of the headphones. Some mention that they fit snugly and do not hurt to wear for long periods of time. However, others say that they are the most uncomfortable headphones they've ever worn and that the vinyl covering does not feel nice.

    "...They are also decently comfortable with one ear on and the other ear against the side of your forehead or wherever so you can hear the world while..." Read more

    "...Noise reduction is GREAT on these.- Very snug fit. (see cons also)- Seems to be very solidly constructed.Cons:-..." Read more

    "...to the Vic Firth isolation headphones I have—which are the most uncomfortable headphones I've ever worn and, based on my experience and many reviews..." Read more

    "...The headphones are decently comfortable because they fit snugly around the ear, rather than sitting on top of the ear and squishing all of your ear..." Read more

    91 customers mention74 positive17 negative

    Customers like the performance of the headphones. They say that they work well, do the trick, and are impressed with their performance. They also say that the speakers inside work great and that they never had any issues with them. Some mention that the headphones are great for radio work and in a busy area.

    "Worked very well with scanner at NASCAR event. Blocked external noise and delivered clear sound from the scanner." Read more

    "...It does a pretty good job at canceling out the sound of crying children or that annoying person staying with you indefinitely...." Read more

    "...They work really great with my metronome too...." Read more

    "...But great for doing radio work, or in a busy area.Issues I am having after 8 years. The volume knob is touchy and shorting out...." Read more

    57 customers mention57 positive0 negative

    Customers are satisfied with the value of the headphones. They mention that it provides excellent value for money, with great quality and decently priced noise-blocking headphones. Some customers also mention that the volume and bass are great for the price.

    "very good headphones with decent sound quality for the price and amazing noise cancelling too but main flaw is the mono/sterero switch which started..." Read more

    "...He was also stunned at the quality for the price...." Read more

    "...much better sound reproduction than you'd expect, and want excellent value for money, these are for you!..." Read more

    "...Overall this is not a bad product for the price and at least I can hear my music without turning the volume way up." Read more

    49 customers mention39 positive10 negative

    Customers like the volume control of the headphones. They say the individual volume control is nice, and the built-in adjustable volume is good. They also mention that the headphones are tuned for the mids, which makes listening to vocal audio levels easy and crisp.

    "...I still give them 5 stars because they block out the sound, have local volume control (that knob on the side) and sound decent...." Read more

    "like everything about headphones. love the volume control on the headset." Read more

    "...I also use them for music and watching movies. They have a built-in volume switch, and can be switched from mono to stereo with a built-in line..." Read more

    "...PROS: The equalization is pretty flat, so it makes listening to vocal audio levels pretty easy and crisp...." Read more

    96 customers mention57 positive39 negative

    Customers are mixed about the construction of the headphones. Some mention that it's very solidly constructed, while others say that the earpiece seems to always break off.

    "...Very snug fit. (see cons also)- Seems to be very solidly constructed.Cons:- A little too snug...." Read more

    "...bass, I expected that, what I didn't expect was the poor reproduction across the whole spectrum...." Read more

    "...all you're listening to on them is podcasts they might actually be a well-made, comfortable pair of isolation headphones for your application...." Read more

    "...The wires are solid.. the connections are solid.. I believe this intermittant left ear connection is in the variable resistor itself.. not in a..." Read more

    62 customers mention16 positive46 negative

    Customers are dissatisfied with the weight of the headphones. They mention that they are a little bit heavy, bulky, and not light.

    "...Also, posture and neck angle make a difference, because the top is so heavy...." Read more

    "...They are very difficult to adjust the head strap size, they are bulky and have metal clamps on the side where you may even scratch yourself with them..." Read more

    "...I love the way the look and feel, the weight of them and the comfort factor. I have only a few complaints...." Read more

    "...the implied ruggedness of the QZ-99s. My critique: The headphones are heavy and uncomfortable on the head even for short periods...." Read more

    38 customers mention0 positive38 negative

    Customers have negative opinions about the fit of the headphones. They say that they are a little too snug and cause irritation. They also say that the headphones are clunky and huge, and they squeeze your head way too tightly. Some customers also mention that the head strap size is difficult to adjust. Overall, customers are not happy with the fit and recommend avoiding these headphones.

    "These are far from perfect. They are very difficult to adjust the head strap size, they are bulky and have metal clamps on the side where you may..." Read more

    "...Seems to be very solidly constructed.Cons:- A little too snug. Wearing them the way I do, causes irritation...." Read more

    "...He says they are kind of tight on his head and I do notice lately he hasn't been using them as often to listen to his shows on the computer...." Read more

    "...These are not comfortable, plus they are tight against the side of your head to the point of distorting my eyeglasses...." Read more

    Don't throw them away
    5 Stars
    Don't throw them away
    These are great headphones with one glaring flaw. The OEM oil filled ear pads will develop a leak over time. When the do don't throw them away Amazon has several replacement pads options here is a link to a set I found with 2 day shipping that fit great and are more comfortable than the original.https://www.amazon.com/gp/aw/d/B06XRH8WPJ?psc=1&ref=ppx_pop_mob_b_asin_title
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    Top reviews from the United States

    Reviewed in the United States on August 5, 2015
    Product Packaging: Standard PackagingVerified Purchase
    2 people found this helpful
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    Reviewed in the United States on February 26, 2024
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    Reviewed in the United States on September 14, 2022
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    One person found this helpful
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    Reviewed in the United States on March 11, 2013
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    2 people found this helpful
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    Reviewed in the United States on December 3, 2023
    Product Packaging: Standard PackagingVerified Purchase
    Reviewed in the United States on March 18, 2022
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    Reviewed in the United States on November 14, 2023
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    Top reviews from other countries

    Translate all reviews to English
    CuisineC
    5.0 out of 5 stars Bonne qualité +++, très bonne isolation du bruit, portage long terme difficile
    Reviewed in France on June 17, 2023
    Product Packaging: Standard PackagingVerified Purchase
    Miguel
    5.0 out of 5 stars Buena opcion si son para radio, de otra forma sigue buscando
    Reviewed in Mexico on May 30, 2017
    Product Packaging: Standard PackagingVerified Purchase
    One person found this helpful
    Report
    Prasanna Kakunje
    5.0 out of 5 stars Loving it
    Reviewed in India on February 3, 2018
    Product Packaging: Standard PackagingVerified Purchase
    Amazon Customer
    5.0 out of 5 stars Like it so far, nice and sturdy, recommended for professionals.
    Reviewed in Canada on July 23, 2016
    Product Packaging: Standard PackagingVerified Purchase
    3 people found this helpful
    Report
    Wolfgang K. Meister
    5.0 out of 5 stars QZ-99 mit fixem Bügel = optimaler Schutz vor Umgebungsgeräuschen
    Reviewed in Germany on May 17, 2013
    Product Packaging: Standard PackagingVerified Purchase