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About this product
Product Information
The Koss QZ/999 noise reduction stereophones utilize a Passive Noise Reduction stereophone system that isolates you from ambient sounds. They have a volume control on earcup for easy level adjustment and can be used when operating racing scanners and metal detectors.Product Identifiers
BrandKoss
MPN134122, QZ99 134122, QZ99
UPC0021299134122
ModelQZ99
eBay Product ID (ePID)114561488
Product Key Features
ColorBlack
Connectivity3.5mm Jack
FeaturesVolume Control, With Volume Control, Closed Back
TypeEar-Cup (Over the Ear)
Additional Product Features
Brand ColorBlack
Connector(s)6.3mm (1/4in), 3.5mm (1/8in)
Impedance60ohm
Maximum Frequency20
Number of EarpiecesEar-Cup (Over the Ear), Headband
Sensitivity102dB
Minimum Frequency40
Ratings and reviews
Most relevant reviews
- 20 Aug, 2018Most favourable review
Awesome Find o Ebay...!
I bought these to go with a used Metal Detector I got locally. Brand name M/D headphones are terribly overpriced..! The Koss QZ-99's worked flawlessly and even the used, the owner took good care of them because they were just like new. These Koss QZ-99's are full over-the ear coverage which block out ambient noises like passing vehicles, airplanes, etc., I like that because it means less distractions..! If you Metal Detect, forget the high priced headphones, get yourself some of these babies, they're great...!Verified purchase: YesCondition: Pre-owned
- 26 Jul, 2020Most critical review
Lacks true ambience sounds, music and tv sounds horrible and like tin.
Sound is that of a cheap and small headset. Not natural sounding, bass and mid range is not there. Only one frequency and blocks quality of sound from laptop and Yamaha Stereo Receiver. Surprised this is a Koss headphone, not quality like I expect from Koss Headphones. I may have got a defective pair. I read good reviews on these. The one I got is not good at all. One side is lacking volume on the side with the volume control even on stereo setting. Comfort lacking, across the top of my head hurts from the band pressing hard after a few minutes.Verified purchase: YesCondition: New
- 12 Jan, 2021
great for detectors. Even works for hearing protection.
sound quality is adequate. the low end is attenuated, but still there. These are not for listening to music, although they would dowel ok with appropriate bass boost. the sealing off of external noise is excellent. these are as good as ear muffs for hearing protection. better than 30 db external noise reduction. I could see they would be excellent for acoustic leak detectors, or metal detectors, or ultrasonic treasure finders.Verified purchase: YesCondition: New
- 22 Dec, 2020
Koss QZ99
Perhaps the only headphones for drummers that really dampen perfectly. (unlike Vic Firth, and the like). Sound quality and gain is not the best, but sufficient. They are a little heavier, but it's a fee to flawless sound insulation.Verified purchase: YesCondition: Pre-owned
- 08 May, 2020
Great headphones
Very good pair of headphones. Noise cancelling is great. They are heavy in weight. Koss is my preferred choice for headphones and these do not disappoint.Verified purchase: YesCondition: New
- 19 Sep, 2018
You can feel the quality
I like the feel of the headphones the stay put on your headVerified purchase: YesCondition: New
- 27 Oct, 2022
Headset
I have hearing issues and this headset works nicely over the aids. The volume control also allows me to adjust for the difference in the hearing between my ears.Verified purchase: YesCondition: Pre-owned
- 13 Jun, 2018
Review
I love these headphones. I'd love them more if the band oner my head wasn't poking my scalp with the steel not covered.Verified purchase: YesCondition: New
- 30 Dec, 2015
Not good
can not even handle 200 watts which they are supposed to. Garbage as far as I'm concerned. I put them on and put a cd in so I could jam on the drums. Right side was crackling like crazy.Verified purchase: YesCondition: New
- 24 Jan, 2018
Great Headphones for Metal Detectoring
These are a great over the ear Headphones, and a great price point.Verified purchase: YesCondition: Pre-owned
