Measurement's report Geekfly GF8S test and graphs - Reference Audio Analyzer

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Geekfly GF8S (report for a pro)



Test report - general data of Geekfly GF8S headphone

Frequency response


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Range, dB:

Perception of headphone frequency response curves of equal loudness ISO 226-2009


General results
General results Geekfly GF8S
Channel
Summary (Right + Left)
Variation in frequency response in band from 100 Hz to 0,01 kHz, dB
-12,84, 6,73

The table shows a most important technical characteristics of Geekfly GF8S

*Center channel headphone is received by averaging between left and right channels

*impedance value in the table for channel



Test conditions
  • Type of headphones: In-Ear or Tablet
  • Measurements were performed on the stand:
    • Solid simulator-bushing SIEC (emulation of auditory channel)
  • Headphone's impedance has not been tested
    • The model use internal headphone amplifier
    • Can be used only with special AMP
    • By other reason



Frequency response of Geekfly GF8S headphone


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Range, dB:
Channel:




Table of measured characteristics
Frequency response Geekfly GF8S
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-13,22, 6,81
-12,45, 6,66


The RMS variation between the right and left channels
Geekfly GF8S from stand SIEC
Deviation between channels in band 40 Hz to 15 kHz, dB
0,3
Deviation between channels in low-frequency range 40 Hz to 200Гц, дБ
0,4
Deviation between channels in mid-frequency range 200 Hz to 2 kHz, dB
0,2
Deviation between channels in hi-frequency range 2 kHz 15 kHz, dB
0,3

Perception of headphone frequency response curves of equal loudness ISO 226-2009 of Geekfly GF8S headphone


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Channel:




Table of measured characteristics
Perception of headphone frequency response curves of equal loudness ISO 226-2009 from Geekfly GF8S
Channel
Summary (Right + Left)
From level 48 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-14,9, +18,9
From level 36 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-14,4, +15,9
From level 24 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-13,8, +12,8
From level 12 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-13,3, +9,8
From level 0 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-12,8, +6,7
From level -12 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-12,4, +6,9
From level -24 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-12,0, +7,9
From level -36 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-11,7, +8,9

*Center channel is received by data averaging between the left and right channels


Impulse response of Geekfly GF8S headphone


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Impulse Response Envelope (ETC - Energy Time Curve) of Geekfly GF8S headphone


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Step response of Geekfly GF8S headphone


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Square wave of Geekfly GF8S headphone

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QSD / Watterfall of Geekfly GF8S headphone


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Delta QSD / Delta Watterfall of Geekfly GF8S headphone


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Close

Measurements of Geekfly GF8S were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Geekfly GF8S test was conducted as a black box test, without regard to cost and prestige. This is the basic principle for making measurements, measurement reports and developing tests in RAA.




Kuznetsov Roman
Founder of RAA



Known by the nickname romanrex
Аuthor of articles iXBT.com



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