Koss QZ900  Headphones Review

Reviewed Feb 29, 2016 at 12:00am
Tested using Methodology v0.9 
Koss QZ900

Track

0.0
Mixed Usage 
0.0
Critical Listening 
0.0
Commute/Travel 
0.0
Sports/Fitness 
0.0
Office 
0.0
Home Theater 

Track

 0
The Koss QZ900 are comfortable mid-tier heaphones that deliver decent noise isolation and passable but bass-heavy audio reproduction. However, the all-plastic build and lack of adequate in-line controls make them feel cheap and less durable.

Our Verdict

0.0
Mixed Usage 

The QZ900 do well as everyday casual headphones. They lack a little isolation for loud environments but perform decently well under other test cases. Sadly their sound quality is not the best.

Pros
  • Lightweight and comfortable.
  • Great seal, leaks very little sound.
Cons
  • Poor in-line control options.
  • All plastic build, feels cheap.
  • Bass-heavy audio reproduction.
0.0
Critical Listening 

Subpar for critical listening. These headphones have a closed sound and a skewed, bass-heavy audio reproduction. This makes them sound too dark for critical listening.

0.0
Commute/Travel 

Not ideal for commuting. They have below-average noise isolation and won't be able to cancel the loud ambient noise of a busy commute.

0.0
Sports/Fitness 

Below-average for sports use. They're lightweight, comfortable and stable. However, they're a bit bulky and don't have a decent control scheme.

0.0
Office 

Below-average for office use. The weak noise isolation does not cancel the ambient noise of busy office, but they don leak much.

0.0
Home Theater 

Mediocre at best for home theater use. They have negligible latency since they're wired headphones. However, their poorly balanced sound and limited range won't be ideal for watching movies.

  • 0.0
    Mixed Usage
  • 0.0
    Critical Listening
  • 0.0
    Commute/Travel
  • 0.0
    Sports/Fitness
  • 0.0
    Office
  • 0.0
    Home Theater
  • Changelog

    1.  Updated Feb 29, 2016: Review published.
    2.  Updated Feb 27, 2016: Our testers have started testing this product.
    How We Test Headphones: Over 800 And Counting!
    How We Test Headphones: Over 800 And Counting!

    Our How We Test Headphones article takes you behind the scenes in our lab. You'll learn how we choose and purchase products and dive into the details of our review philosophy, from testing and scoring to writing and editing.

    You can also discover how we produce recommendations like this one so that you can find the best headphones (or earbuds!) for your needs.

    Test Results

    Sort:
    RATINGS
    Category:
    All
    Design
    Style
    TypeLockedOver-ear
    EnclosureLockedClosed-Back
    WirelessLockedNo
    TransducerLockedDynamic
    MicLockedNo

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    0.0
    Comfort
    WeightLockedLock lbs
    Clamping Force
    LockedLock lbs

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    0.0
    Controls
    Ease of useLockedLocked
    FeedbackLockedLocked
    Call/Music ControlLockedLocked
    Volume ControlLockedLocked
    Noise Canceling ControlLockedLocked
    Talk-ThroughLockedLocked
    Additional ButtonsLockedLocked

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    0.0
    Stability

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    0.0
    Portability
    LLockedLock"
    WLockedLock"
    HLockedLock"
    VolumeLockedLock in³
    Stand requiredLockedN/A

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    0.0
    Case
    TypeLockedLocked
    LLockedLock"
    WLockedLock"
    HLockedLock"
    VolumeLockedLock in³

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    0.0
    Build Quality

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    Cable
    DetachableLockedLocked
    LengthLockedLock ft
    ConnectionLockedLocked

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    Front
    Angled
    Side
    Rear
    Top
    In The Box

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    Sound
    0.0
    Bass
    Std. Err.
    LockedLock dB
    Low-Frequency Extension
    LockedLock Hz
    Low-Bass
    LockedLock dB
    Bass
    LockedLock dB
    High-Bass
    LockedLock dB
    0.0
    Mid
    Std. Err.
    LockedLock dB
    Low-Mid
    LockedLock dB
    Mid
    LockedLock dB
    High-Mid
    LockedLock dB
    0.0
    Treble
    Std. Err.
    LockedLock dB
    Low-Treble
    LockedLock dB
    Treble
    LockedLock dB
    High-Treble
    LockedLock dB
    0.0
    Soundstage
    Openness
    Locked
    0.0
    Acoustic Space Excitation
    Locked
    0.0
    0.0
    Total Harmonic Distortion
    Weighted THD @ 90
    LockedLock
    Weighted THD @ 100
    LockedLock
    Isolation
    0.0
    Noise Isolation
    Overall Attenuation
    LockedLock dB
    Noise-CancellingLockedYes
    Bass
    LockedLock dB
    Mid
    LockedLock dB
    Treble
    LockedLock dB
    Self-Noise
    LockedLock dB

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    0.0
    Leakage
    Overall Leakage @ 1ft
    LockedLock dB

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    Active Features
    0.0
    Wireless
    Type
    LockedN/A
    Obstructed Range
    LockedN/A
    Line of Sight Range
    LockedN/A
    NFC
    LockedLocked
    0.0
    Latency
    Base Latency
    LockedLock ms
    aptX Latency
    LockedN/A
    aptX(LL) Latency
    LockedN/A
    0.0
    Battery
    Battery Life
    LockedN/A
    0.0
    App Support

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