Measurement's report FiiO F5 test and graphs - Reference Audio Analyzer
FiiO F5



Manufacturers / FiiO

FiiO F5 (report for a pro)



About this report
This is a headphone report for professionals.
You can see a simple report for "dummies" with explanations of the main characteristics for FiiO F5

One product can have multiple reports in different modes and with different a suite of tests.



Test report - general data of FiiO F5 headphone

Frequency response, Impedance, Frequency response with standard AMPs


Graphics setting view
Frequency band, Hz:
Range, dB:

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


General results
General results FiiO F5
Channel
Center/Summary
Sensitivity average in band from 100 Hz to 10 kHz, dB/V
124,7
Impedance average in band from 40 Hz to 15 kHz, ohm
31,9
For 94,0 dB SPL need, VRMS
0,029
For 94,0 dB SPL need, mW
0,026

The table shows a most important technical characteristics of FiiO F5

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



Test conditions
  • Type of headphones: In-Ear or Tablet
  • Measurements were performed on the stand:
    • Solid simulator-bushing SIEC (emulation of auditory channel)


The tags (specifications) for this report are:
Type of product :
Headphones tested in :
Headphones tested on :
Type of headphones :
The type of acoustic design :


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Sensitivity of FiiO F5 headphone


Graphics setting view
Frequency band, Hz:
Channel:


Brief information
The sensitivity of the headphones F.A.Q. is determined by the amplitude-frequency response curve F.A.Q. with the specified sound pressure dB SPL of 1 VRMS. For 0 dB, 20 μPa is assumed.

By the sensitivity of the headphones, you can predict the volume level developed by the headphones at any chosen frequency with the known supply voltage to the headphones from the amplifier. Three-wave smoothing F.A.Q. is used to eliminate the interference of waves due to the use of a "point" microphone.

The frequency response in RAA is obtained through the reproduction and analysis of a special noise signal with the subsequent generation of an impulse response. The frequency response plot is constructed from the spectrum of the impulse response. During the measurements, a special amplifier was used with zero total output impedance over the entire frequency range, which required no compensation for the amplitude response F.A.Q.. The microphone is calibrated to 45 kHz F.A.Q. with an appropriate frequency response correction.

The difference in amplitudes of 6 dB is equivalent to a twofold ratio of signal levels.

Original text in Russian report. You can help with translation via the forum or feedback.


Table
Sensitivity FiiO F5
Channel
Left
Right
Sensitivity average in band from 100 Hz to 10 kHz, dB/V
124,9
124,6
Sensitivity at 500 Hz at 1 V, dB
124,1
123,6
Sensitivity at 500 Hz at 1 mW, dB
109,1
108,6
Sensitivity at 1000 Hz at 1 V, dB
122,6
122,3
Sensitivity at 1000 Hz at 1 mW, dB
107,6
107,3

The sensitivity was calculated by data from the measuring stand SIEC



Comparison of the parameters by on-line services

Compare the frequency response of headphones with sensitivity

How much sensitivity of the FiiO F5 different from other models?
Comparison the frequency response with sensitivity graph of FiiO F5 on-line.

Comparison of change of SPL and frequency response of headphones depending on the applied voltage level and the impedance of the audio source


Comparison of change of SPL and frequency response of FiiO F5 depending on the applied voltage level and the impedance of the audio source by on-line service.

Comparison of the sensitivity value FiiO F5 versus other models

How much are the characteristics of FiiO F5 different from other models?
This can be compared for all measured headphone models

Determination of the required voltage level from the headphone amplifier and comparison with other models

What voltage range from the amplifier is needed for the FiiO F5?
Comparison of on-line graphs with additional analytics of compatibility with specific amplifiers. In comparison, the required voltage value, which the amplifier should provide for the selected sound pressure, is determined based on the sensitivity value of the FiiO F5.

Frequency response of FiiO F5 headphone


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:


Brief information
Graph of frequency response F.A.Q. the shows the balance of the frequency of the headphones (reproduced frequency spectrum) in dB. 0 dB is the average of the amplitude.

The frequency response of the headphones can be represented as the selected equalizer setting in the player, applicable to headphones with a flat sound. Subjective "flatness" is perceived differently from external conditions: the volume level F.A.Q. of the external noise and noise isolation headphones. When connected to an amplifier, the frequency response can change F.A.Q..

The frequency response in RAA is obtained through the reproduction and analysis of a special noise signal with the subsequent generation of an impulse response. The frequency response plot is constructed from the spectrum of the impulse response. During the measurements, a special amplifier was used with zero total output impedance over the entire frequency range, which required no compensation for the amplitude response F.A.Q.. The microphone is calibrated to 45 kHz F.A.Q. with an appropriate frequency response correction.

According to the frequency response curve, it is possible to calculate the width of the frequency range F.A.Q..

The difference in amplitudes of 6 dB is equivalent to a twofold ratio of signal levels.

Original text in Russian report. You can help with translation via the forum or feedback.


Table
Frequency response FiiO F5
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-9,77, 5,67
-10,95, 5,33


The RMS variation between the right and left channels
FiiO F5 from stand SIEC
Deviation between channels in band 40 Hz to 15 kHz, dB
0,6
Deviation between channels in low-frequency range 40 Hz to 200Гц, дБ
0,0
Deviation between channels in mid-frequency range 200 Hz to 2 kHz, dB
0,1
Deviation between channels in hi-frequency range 2 kHz 15 kHz, dB
0,8


Comparison of the parameters by on-line services

Comparison the frequency response of FiiO F5 versus other models

How much frequency response of the FiiO F5 different from other models?
Comparison the frequency response of


Impedance of FiiO F5 headphone


Graphics setting view
Frequency band, Hz:
Channel:


Brief information
Impedance indicates the resistance of the earphone, depending on the frequency.

The vertical scale of resistance is presented on a logarithmic scale.

The impedance of the headphones affects the current consumption from the amplifier, changes in frequency response when connected to an amplifier F.A.Q. and indirectly on the sensitivity of the headphones F.A.Q. to the voltage.

Original text in Russian report. You can help with translation via the forum or feedback.


Table
Impedance FiiO F5
Channel
Left
Right
Impedance average in band from 40 Hz to 15 kHz, ohm
32,0
31,9
Resistance at 500 Hz, ohm
31,7
31,7
Resistance at 1000 Hz, ohm
31,8
31,7
The minimum value in band from 40 Hz to 15 kHz at frequency, Hz
50,1
50,1
The minimum value in band from 40 Hz to 15 kHz, ohm
31,7
31,6
The maximum value in band from 40 Hz to 15 kHz at frequency, Hz
5241,0
5241,0
The maximum value in band from 40 Hz to 15 kHz, ohm
33,2
33,2


Comparison of the parameters by on-line services

Comparison of the impedance of FiiO F5 versus other models

How much are the characteristics of FiiO F5 different from other models?
This can be compared for all measured headphone models


Electric phase of FiiO F5 headphone


Graphics setting view
Frequency band, Hz:
Range, degree:
Channel:


Brief information
The electrical phase determines the "lightness of the load" for the amplifier.

Original text in Russian report. You can help with translation via the forum or feedback.


Table
Electric phase FiiO F5
Channel
Left
Right
Average variation in phase response in band from 20 Hz to 20 kHz, degree
1,5
1,5
The minimum value in band from 20 Hz to 20 kHz at frequency, Hz
51,9
50,1
The minimum value in band from 20 Hz to 20 kHz, degree
0,1
-0,1
The maximum value in band from 20 Hz to 20 kHz at frequency, Hz
19741,4
19741,4
The maximum value in band from 20 Hz to 20 kHz, degree
9,1
9,1

Frequency response of FiiO F5 headphone when connected to amplifiers with constant output impedance


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:


Brief information
The test shows the frequency response of the headphones when connected to amplifiersF.A.Q., whose output impedance is constantly operating frequency range.



For the analysis, the choice of amplifiers with resistances: 10, 20, 50, 100 and 300 Ohms.

Original text in Russian report. You can help with translation via the forum or feedback.


Table
Frequency response of headphone FiiO F5 with amplifier with a constant impedance
Channel
Left
Right
Variation in FR from AMP 0 ohm in band 100 Hz to 10 kHz, dB
-9,77, +5,67
-10,95, +5,33
Variation in FR from AMP 10 ohm in band 100 Hz to 10 kHz, dB
-9,76, +5,70
-10,94, +5,35
Variation in FR from AMP 20 ohm in band 100 Hz to 10 kHz, dB
-9,75, +5,72
-10,94, +5,36
Variation in FR from AMP 50 ohm in band 100 Hz to 10 kHz, dB
-9,74, +5,74
-10,92, +5,38
Variation in FR from AMP 100 ohm in band 100 Hz to 10 kHz, dB
-9,73, +5,76
-10,92, +5,39
Variation in FR from AMP 300 ohm in band 100 Hz to 10 kHz, dB
-9,73, +5,77
-10,91, +5,40


Comparison of the parameters by on-line services

Compare the frequency response of a bundle of headphones and amplifiers

How much frequency response of the FiiO F5 changes when connected to different amplifiers? In the example the FiiO F5 and AMPs Apple iPhone 5S, Xiaomi Redmi Note 4X PowerAmp, Astell&Kern KANN Balance, Oriolus DP100 Unbalance, Shanling M3s Unbalance . You can choose and compare bundles with other amplifiers.

Deviation of frequency response of FiiO F5 headphone when connected to amplifiers with constant output impedance


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:


Brief information
The test shows only the change frequency response headphones F.A.Q. when connected to amplifiers, whose output impedance is constant in the operating frequency range.

At the amplifier the impedance can be of different sizes and when agreed with the impedance of the headphones, change in the frequency response F.A.Q. to varying degrees. The lower the output impedance of the amplifier and the higher the resistance of the headphones, the smaller the change.

Original text in Russian report. You can help with translation via the forum or feedback.


Table
Variation in frequency response with amplifiers with constant output resistance from FiiO F5
Channel
Center/Summary
With amplifier impedance at 10 ohm in band 20 Hz to 20 kHz, dB
0,1
With amplifier impedance at 20 ohm in band 20 Hz to 20 kHz, dB
0,2
With amplifier impedance at 50 ohm in band 20 Hz to 20 kHz, dB
0,3
With amplifier impedance at 100 ohm in band 20 Hz to 20 kHz, dB
0,3
With amplifier impedance at 300 ohm in band 20 Hz to 20 kHz, dB
0,4

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



Comparison of the parameters by on-line services

Compare the frequency response of a bundle of headphones and amplifiers

How much frequency response of the FiiO F5 changes when connected to different amplifiers? In the example the FiiO F5 and AMPs Apple iPhone 5S, Xiaomi Redmi Note 4X PowerAmp, Astell&Kern KANN Balance, Oriolus DP100 Unbalance, Shanling M3s Unbalance . You can choose and compare bundles with other amplifiers.

Frequency response of FiiO F5 headphone when connected to an amplifier with zero output impedance and raising of output impedanse in low frequencies


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:


Brief information
The test shows the frequency response of the headphones when connected to amplifiersF.A.Q., whose output impedance is close to zero in the mid and high frequency range, but increases in the low frequency range.



An amplifier of this type was chosen for the analysis.

Original text in Russian report. You can help with translation via the forum or feedback.


Table
Frequency response with an amplifier with zero output resistance and raising of output resistance in low frequencies from FiiO F5
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-9,68, 5,76
-10,86, 5,42


Comparison of the parameters by on-line services

Compare the frequency response of a bundle of headphones and amplifiers

How much frequency response of the FiiO F5 changes when connected to different amplifiers? In the example the FiiO F5 and AMPs Inakustik Premium Headphone Amp. No. 1 Out 2, Fly FS504 Cirrus 2 PowerAmp (A5 v703), Hidizs AP100, iBasso D-Zero, iBasso D10 Cobra, Cowon C2, Colorful Colorfly CK4, Colorful Colorfly C4 Pro Jack 3.5, Benjie X1, Lotoo PAW Pico . You can choose and compare bundles with other amplifiers.

Deviation of frequency response of FiiO F5 headphone when connected to an amplifier with zero output impedance and raising of output impedanse in low frequencies


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:


Brief information
The test shows only the change frequency response headphones F.A.Q. when connected to amplifiers, whose output impedance is constant in the operating frequency range.

The lower the impedance of headphones in the low-frequency range, the stronger the low frequencies are weakened. With high-impedance headphones, there is no noticeable change in the frequency response F.A.Q.. Original text in Russian report. You can help with translation via the forum or feedback.


Table
Variance of frequency response FiiO F5 depending on the total output resistance of the amplifier with zero resistance and a rise of resistance at low frequencies
Variance frequency response at the frequency 20 Hz, dB
-5,2
Variance frequency response at the frequency 40 Hz, dB
-2,2
Variance frequency response at the frequency 80 Hz, dB
-0,8


Comparison of the parameters by on-line services

Compare the frequency response of a bundle of headphones and amplifiers

How much frequency response of the FiiO F5 changes when connected to different amplifiers? In the example the FiiO F5 and AMPs Inakustik Premium Headphone Amp. No. 1 Out 2, Fly FS504 Cirrus 2 PowerAmp (A5 v703), Hidizs AP100, iBasso D-Zero, iBasso D10 Cobra, Cowon C2, Colorful Colorfly CK4, Colorful Colorfly C4 Pro Jack 3.5, Benjie X1, Lotoo PAW Pico . You can choose and compare bundles with other amplifiers.

Perception of headphone frequency response curves of equal loudness ISO 226-2009 of FiiO F5 headphone


Graphics setting view
Channel:


Brief information
Brief information
The graph shows the change in the perception of the frequency responseF.A.Q. of the headphones when listening to music with a different loudness relative to the natural level. When listening to headphones at a low volume, the perception of recoil in the low frequency range decreases, and when you listen to it at a high volume, it increases.

According to this graph, you can estimate at what volume the headphones will be perceived more flat.

The perception of the number of low frequencies depends on the volume according to the curves of equal loudness. (ISO 226-2009 Acoustics. Normal equal-loudness-level contours). For the base level, 72 dB SPL (live performance of several instruments with vocals without amplifiers with acoustics) is selected.When you select another base level, the dependence varies slightly and is suitable for almost all levels.

Examples of graphics application in practice F.A.Q..

Original text in Russian report. You can help with translation via the forum or feedback.


Table
Perception of headphone frequency response curves of equal loudness ISO 226-2009 from FiiO F5
Channel
Center/Summary
From level 48 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-12,0, +14,9
From level 36 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-11,5, +11,8
From level 24 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-11,1, +8,7
From level 12 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-10,7, +5,7
From level 0 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-10,3, +5,5
From level -12 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-10,0, +6,6
From level -24 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-9,7, +7,6
From level -36 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-9,5, +8,6

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


Impulse response of FiiO F5 headphone


Graphics setting view
Time, ms:
Channel:


Brief information
Impulse response is a reaction to the pulse of the minimum possible duration. From the impulse response, most of the parameters under study are calculated: frequency response F.A.Q., phase-frequency response, group delay, waterfall, step response and square wave. The impulse response is visually not informative and for obtaining the majority of characteristics a fast Fourier transform and other mathematical algorithms with the analysis of the total pulse length are used. The total pulse length is about 5 seconds, while only the beginning of a pulse of 2-4 milliseconds is visually visible. Vertically, the visual detail does not exceed 40-45 dB.

The impulse response is able to show visually only the same or different polarity of the drivers and possible high-frequency resonance.

The waveform of the impulse response of the FiiO F5 depends on the FiiO F5 frequency response and the damped resonances and reverberations of the Astrotec AX-60 and the reverberation in the stand chamber. The visual clarity of the parameters on the impulse response is very low. Visual determination of quality by impulse response was actual in "pre-computer" years.

The frequency response in RAA is obtained through the reproduction and analysis of a special noise signal with the subsequent generation of an impulse response. During the measurements, a special amplifier was used with zero total output impedance over the entire frequency range, which required no compensation for the amplitude response F.A.Q.. The microphone is calibrated to 45 kHz F.A.Q. with an appropriate frequency response correction. RAA measurements are made in 192 kHz / 24 bit mode. The impulse response is displayed as is, without compensation of the frequency response for the microphone or smoothing. It is RAW data. The reduction in the frequency response of the microphone starts at 20 kHzF.A.Q.. When reproducing the test signal via the E-MU 1616m , the original impulse response does not contain any pre-ringing F.A.Q.. Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Impulse Response Envelope (ETC - Energy Time Curve) of FiiO F5 headphone


Graphics setting view
Time, ms:
Range, dB:
Channel:


Brief information
The envelope of the impulse response is the sum of the half-wave moduli of the impulse response, constructed on a logarithmic scale.

In speaker tests, the envelope of the impulse response tracks the reverberation of the room. For headphones that operate on a small volume, this feature does not carry any useful information. The envelope of the impulse response is given for general educational purposes - to show that the impulse response is not a short burst of 2-4 ms, but a long-term attenuation within a few seconds. The widespread opinion "on the impulse characteristic all at once it is visible" incorrectly.

Original text in Russian report. You can help with translation via the forum or feedback.

Step response of FiiO F5 headphone


Graphics setting view
Time, ms:
Channel:


Brief information
The step response is a playback on a step (front square) signal. It is built on the derivative impulse response .The response to the step represents the beginning of the meander front with zero frequency.

In the audiophile community on the square wave it is customary to determine the "speed" of the headphones, however this characteristic is applicable only to amplifiers having a flat frequency response with no reverberation and completely not applicable to headphones.

The waveform of the response to the step depends on the frequency response and the resonances of the headphones. In ancient times, before the wide spread of digital technologies, in the form of a meander, a rough estimate was made on the frequency response F.A.Q. and F.A.Q.. Today, the analysis of acoustic parameters on the meander is hopelessly outdated and the graphs of the final frequency response and waferballs with resonances are looked at separately.

Original text in Russian report. You can help with translation via the forum or feedback.

QSD / Watterfall of FiiO F5 headphone


Graphics setting view
Frequency band, Hz:
Channel:


Brief information

The cumulative spectrum of the signal attenuation shows resonances and reverberations after the headphones cease to reproduce the signal.

The cumulative spectrum F.A.Q. of signal attenuation is constructed by impulse response .The graph does not use three-wave smoothing. Time zones with an interval of 1 ms are painted in a certain color. For convenience of perception, the graph does not have vertical displacement, limited only to horizontal displacement. From the position of 3D - this is a view with a small turn in the horizontal plane. You can accurately assess the level on a vertical scale. To obtain good resolution in the time domain, a small window of 2048 samples is used, which directly affects the low resolution of the low frequency region and the graph in the region below 200-300 Hz does not show useful information.

The presence of resonances does not have a direct connection with the class of headphones, but allows you to make an assumption about the noticeable effect of the quality of the amplifier for headphones. Each resonance adds emphasis to its frequency and if distortion from the amplifier gets into these frequencies, these distortions will be amplified. Variants of "good" and "bad" graphs can be viewed separately F.A.Q..

Resonances can be considered in part as a qualitative indicator "less = better". But it is more correctly viewed as an indicator of universality "less resonance = less audible amplifier problems". If high-end headphones have a lot of resonances, then their potential will be revealed only with an amplifier with a minimum level of distortion.

Original text in Russian report. You can help with translation via the forum or feedback.

Delta QSD / Delta Watterfall of FiiO F5 headphone


Graphics setting view
Frequency band, Hz:
Channel:


Brief information
The change in the cumulative spectrum F.A.Q. of the signal attenuation is a cumulative spectrum of the signal attenuation, where the original frequency response is represented by a straight line.

Time zones are painted in a certain color.

Sharp peaks above 0 dB are formed in the presence of a narrow-band dip at the initial frequency response. This can be a resonance or an error in the interference of waves, it needs to die according to the graph of cumulative spectrum signal attenuation.

For the convenience of estimating the amplitudes, the graph has no vertical and horizontal displacement.

To obtain good resolution in the time domain, a small window of 2048 samples is used, which directly affects the low resolution of the low frequency region and the graph in the region below 200-300 Hz does not show useful information.

Original text in Russian report. You can help with translation via the forum or feedback.




On-line comparison and selection services for FiiO F5

Comparison the frequency response the FiiO F5 versus other models

Compare the sensitivity and impedance the FiiO F5 versus other models.

The automatic selection of the optimal AMP models from FiiO F5 from the measured power parameters of the amplifying part and the measured parameters of the headphones for different purpose of use.

Сравнение АЧХ и звукового давления FiiO F5 в зависимости от подаваемого напряжения и импеданса усилителя.

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