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Item#: N82E16826263113

KOSS Race Tracker Black QZ5 3.5mm Connector Circumaural Passive Noise Reduction Headphone

  • 40Hz-20KHz
  • 3.5mm Connector
  • 8 feet Cord Length

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews


Koss QZ5 Passive Noise Reduction Headphones

The Koss Race Tracker black headphone is an extra-durable headphone that delivers amazing passive noise reduction. The Race Tracker was initially designed for use with racing radio scanners and metal detectors users, and provided a behind-the-head headband design. Since then, the Race Tracker has become a favorite for a wide range of listeners who need to cut high levels of ambient noise and do not want the constraints of a conventional headband.

Like the QZ99, the Koss QZ5 Passive Noise Reduction headphones were initially designed for racing radio scanner and metal detector users, with its superior isolating capabilities and unique behind-the-head headband design. It has since become a favorite for audiophiles who crave the ability to cut out high levels of ambient noise without the constraint of a conventional headband. The QZ5 are not only for noise isolation, but also for sound quality.

The QZ5 Passive Noise Reduction headphones sport neodymium magnet structures that deliver outstanding clarity and definition. The closed Pneumalite ear cushions and extra-secure headband create a tight seal around the ear eliminating all ambient noise. Durable and built to withstand the rigors of indoor and outdoor use, the Koss QZ5 also include a volume control on the ear cup that makes adjusting sound levels a snap, and a stereo/mono switch that extends user flexibility. Sporty and strong with superior sound quality, these Passive Noise Reduction headphones are every audiophile’s dream.


  • Neodymium magnet structures deliver outstanding clarity and definition
  • Closed Pneumalite™ ear cushions and extra-secure headband seal ears, eliminate all ambient noise
  • Volume control on ear cup allows easy level adjustment
  • Volume control on ear cup allows easy level adjustment
  • Includes 8 foot, coiled, single-entry cord with 3.5 mm plug and 6.3 mm adapter
  • Covered under the Koss Stereophones Limited Lifetime Warranty


Frequency Response 40-20,000 Hz
Impedance 60 ohms
Sensitivity 102 dB SPL/1mW
Cord Coiled, Single Entry, 8ft

Learn more about the Koss QZ5

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): Lifetime
  • Limited Warranty period (labor): Lifetime
  • Read full details

Customer Reviews of the Koss QZ5

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  • Allen C.
  • 8/31/2014 10:24:44 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggspassive noise reduction headphone

Pros: I've owned one of these for years before I loaned it to someone who never returned it. Great for doing jobs that electronic noise reduction headsets are useless; like cutting grass, using gas weed eaters and pressure washers. One should ware a noise reduction headset doing high noise jobs anyway so listing to music at the same time is awesome. It does fit tightly but that is a requirement to block out all noise. I have worn it for 6 hours at a time with no problem.

Cons: I don't have any.

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  • Joshua B.
  • 12/1/2011 11:22:07 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsA bit uncomfortable, but otherwise nice

Pros: 1. Abosolutely fantastic noise cancellation. They're not silence chambers, but I can't hear my phone when it's right infront of me sometimes.

2. Nice long, thick springed cord. Guaranteed to last a LOT longer than those skimpy noodle-thin cords companies insist on giving really expensive headphones.

3. On-headphone volume adjustment, which is really useful when you don't want to mess with program settings, or things are suddenly just a little too low/loud.

4. The stereo/mono switch is useful as well, when you're not dealing with L/R or surround sound.

Cons: The metal band that goes behind your head is a little too concave. As in it really squeezes your head if you don't have a tiny head. I'm in the process of trying to make their bend angle a little more obtuse, so instead of a "C" they're a "(".

For me, out of the box, wearing them for about 30 minutes caused me to have a headache and I had to take them off to allow circulation to continue normally.

Other Thoughts: If you're okay with attempting to bend tough metal while attached to your headphones to loosen their grip on your head I'd reccomend these in a heartbeat.

If you're looking for really comfortable headphones I would look elsewhere, but if you want great noise reduction with a durable build and cord, these are the ones for you.

8 out of 8 people found this review helpful. Did you? Yes No

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Item#: N82E16826263113
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