AKG K391-NC  Headphones Review

Reviewed Feb 26, 2016 at 12:00am
Test bench update Aug 10, 2017 at 11:33am
Tested using Methodology v1.0 
AKG K391-NC

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 AKG K391-NC are a good set of in-ear buds that sound great and isolate the listener really well. Their outstanding noise cancellation and leakage performance are recommended for noisy commutes. The sound profile works well for most music genres, but their in-ear design might not be for everyone.

Our Verdict

0.0
Mixed Usage 

Above-average as everyday headphones. They're compact and have a good sound. They can also handle loud environments well, thanks to their great noise cancelling. This makes them versatile enough to use in most situations.

Pros
  • Outstanding noise isolation.
  • Accurate audio reproduction.
  • Very little sound leakage.
Cons
  • Unexciting design.
  • Uncomfortable "in ear" fit.
0.0
Critical Listening 

Average for critical listening. Above-average sound quality but the small in-ear buds aren't optimized to produce a good soundstage, which isn't ideal for pure critical listening.

0.0
Commute/Travel 

The AKG K391-NC have a great isolation performance, which makes them easy to recommend to anyone who travels a lot or has very noisy daily commutes. They'll reduce a significant amount of ambient noise, and they're easy to carry around.

0.0
Sports/Fitness 

Above-average for sports. The AKG K391-NC will easily fit into most pockets, and they're stable enough to run with. As long as are comfortable with the in-ear fit.

0.0
Office 

Above-average for studio use. Leakage is barely audible and won't disturb anyone around you even at higher volumes.

0.0
Home Theater 

Above-average for home theater use. The AKG K391-NC have no latency but they also have a short audio cable. They have the range to watch TV from your couch unless you have an extension cord for the audio cable.

  • 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 Aug 10, 2017: Converted to Test Bench 1.0.
    2.  Updated Feb 26, 2016: Review published.

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    Test Results

    Sort:
    RATINGS
    Category:
    All
    Design
    Style
    TypeLockedIn-ear
    EnclosureLockedClosed-Back
    WirelessLockedNo
    TransducerLockedDynamic
    MicLockedYes

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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

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    0.0
    Build Quality

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    0.0
    Breathability
    Avg.Temp.DifferenceLockedLock °C
    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
    Frequency Response Consistency
    Avg. Std. Deviation
    LockedLock dB
    0.0
    Soundstage
    PRTF Error
    LockedLock dB
    Openness
    Locked
    0.0
    Acoustic Space Excitation
    Locked
    0.0
    Correlated Crosstalk
    LockedLock dB
    0.0
    Imaging
    Phase Error
    LockedLock°
    Driver Mismatch (Amplitude)
    LockedLock dB
    Driver Mismatch (Frequency)
    LockedLock dB
    Driver Mismatch (Phase)
    LockedLock°
    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 Type
    LockedLocked
    Battery Life
    LockedLock hrs
    Charge Time
    LockedLock hrs
    Auto-off
    LockedLocked
    Audio while charging
    LockedLocked
    Passive Playback
    LockedLocked

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    0.0
    App Support

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