
Test report - general data of FiiO X3 III as Line Out mode
Spectrum of Total Harmonic Distortion (THD)
Spectrum of Jitter
Spectrum of Multitone Distortion
General results
General results FiiO X3 III
Channel
Center/Summary
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,01, 0,01
Max voltage output at 0 dBFS, VRMS
1,88
Max voltage output at 0 dBFS, dBV
5,46
Max voltage output at 0 dBFS, dBu
7,68
Harmonic distortion at 0,0 dBFS @ 1 kHz, dB
-105,2
Total harmonic distortion at 0,0 dBFS @ 1 kHz, %
0,000547
Harmonic distortion at -3,0 dBFS @ 1 kHz, dB
-104,6
Total harmonic distortion at -3,0 dBFS @ 1 kHz, %
0,000588
The table shows a most important technical characteristics of FiiO X3 III
*Center channel headphone is received by averaging between left and right channels
Test conditions
- Measured by RAA with ADC from E-MU1616m
- Difference ... 0 dBFS out level FiiO X3 III versus ADC E-MU1616m 0 dBFS input level is -13,61 dB (value level for left and right channels)
- During tests RAA measuring complex was used galvanic isolated power transformer and was excluded the effect of ground loop in the spectra
Detailed measurements report of technical characteristics
Report content
Spectra of high resolution
- Noise floor spectrum
- Spectrum of Total Harmonic Distortion (THD)
- Spectrum of Dynamic Range (-60 dBFS)
- Sine low ammplitude spectrum -90 dBFS
- Spectrum of Intermodulation Distortion (IMD) - SMPTE
- Spectrum of Intermodulation Distortion (IMD) - CCIF
- Spectrum of Multitone Distortion
- Spectrum of Noise Distortion
- Spectrum of Jitter
Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:
Type test:
Table of measured characteristics
Frequency response FiiO X3 III
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,01, 0,01
-0,01, 0,01
Graphics setting view
Range, dB:
Channel:
Table of measured characteristics
Crosstalk FiiO X3 III
Crosstalk at the frequency 100 Hz, dB
-109,0
Crosstalk at the frequency 1000 Hz, dB
-103,0
Crosstalk at the frequency 10000 Hz, dB
-83,7
Graphics setting view
Channel:
Graphics setting view
Channel:
Type test:
Table of measured characteristics
THD vs output voltage of line out FiiO X3 III
Max voltage output at 0 dBFS, VRMS
1,88
Max voltage output at 0 dBFS, dBV
5,46
Max voltage output at 0 dBFS, dBu
7,68
Graphics setting view
Channel:
Type test:
Graphics setting view
Time, ms:
Channel:
Graphics setting view
Time, ms:
Range, dB:
Channel:
Graphics setting view
Time, ms:
Channel:
Graphics setting view
Channel:
Type test:
Checking for correctness of reproduction signals depth more than 16-bit of FiiO X3 III as Line Out mode
Graphics setting view
Channel:
Type test:
Spectra of high resolution
Graphics setting view
Range, dB:
Channel:
Scale:
Graphics setting view
Range, dB:
Channel:
Level, dBFS:
Scale:
Table of measured characteristics
Harmonic distortion
FiiO X3 III
FiiO X3 III
Harmonic distortion at 0,0 dBFS @ 1 kHz, dB
-105,2
Total harmonic distortion at 0,0 dBFS @ 1 kHz, %
0,000547
Harmonic distortion at -3,0 dBFS @ 1 kHz, dB
-104,6
Total harmonic distortion at -3,0 dBFS @ 1 kHz, %
0,000588
Table of measured characteristics
The levels of harmonics when applying signal 1 kHz 0 dBFS
FiiO X3 III
FiiO X3 III
Harmonic, number
1
2
3
4
5
6
7
8
9
10
The level of harmonics, dB
0,0
-107,3
-117,9
-120,0
-111,8
-127,2
-119,0
-134,6
-128,6
-147,8
Harmonic, number
11
12
13
14
15
16
17
18
19
20
The level of harmonics, dB
-142,1
-139,5
-136,2
-136,3
-134,6
-135,4
-133,1
-137,5
-135,0
-137,0
The levels of harmonics when applying signal 1 kHz -3 dBFS
FiiO X3 III
FiiO X3 III
Harmonic, number
1
2
3
4
5
6
7
8
9
10
The level of harmonics, dB
-3,0
-111,1
-111,6
-123,0
-118,3
-130,4
-135,0
-133,1
-135,3
-159,0
Harmonic, number
11
12
13
14
15
16
17
18
19
20
The level of harmonics, dB
-128,2
-137,1
-132,0
-137,5
-130,1
-143,3
-134,4
-140,5
-136,2
-134,7
Graphics setting view
Range, dB:
Channel:
Scale:
Graphics setting view
Range, dB:
Channel:
Scale:
Spectrum of Intermodulation Distortion (IMD) - SMPTE of FiiO X3 III (High resolution graph) as Line Out mode
Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:
Level, dBFS:
Scale:
Spectrum of Intermodulation Distortion (IMD) - CCIF of FiiO X3 III (High resolution graph) as Line Out mode
Graphics setting view
Range, dB:
Channel:
Level, dBFS:
Graphics setting view
Range, dB:
Channel:
Level, dBFS:
Type test:
Graphics setting view
Range, dB:
Channel:
Level, dBFS:
Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:
Type test:
Table of measured characteristics
The accuracy of the playback speed FiiO X3 III
Fundamental tone 11025 Hz, Hz
11025,1682
Variance from 11025 Hz, Hz
0,1682
Spectra vs Amplitude
Graphics setting view
Channel:
Level, dBFS:
Graphics setting view
Frequency band, Hz:
Channel:
Level, dBFS:
Graphics setting view
Channel:
Level, dBFS:
Graphics setting view
Channel:
Level, dBFS:
Type test:
Graphics setting view
Channel:
Level, dBFS:
Close ⊗
Measurements of FiiO X3 III were carried out by Roman Kuznetsov on the hardware-software complex RAA.
The FiiO X3 III 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
FiiO X3 III is available in reports and services. You are in a professional report.
Information for entry level users
reports for a newbie (Headphone amplifier)
reports for a newbie (Headphone amplifier)
Information for all
Versus of characteristics
Versus of characteristics
Information for professionals
reports for a pro (Headphone amplifier)
(DAC Line Out)
Comparison of on-line graphs
reports for a pro (Headphone amplifier)
(DAC Line Out)
Comparison of on-line graphs
- Comparison of basic characteristics
- Comparison of the frequency response/SPL of the bundles of headphones and amplifiers
- Voltage and Sensitivity
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