About this report
This is a report for professionals with a suite of tests for line output devices. Alternative version of the report for "dummies" in development.
One product can have multiple reports in different modes and with different a suite of tests.
A suite of tests for the line-out can be used for headphone or speaker output if in this mode it is possible to use the device as a source for connecting an external amplifier or if such a test suite can give more information about the implementation of the DAC in the device.
Test report - general data of FiiO X3 III as Line Out mode
Spectrum of Total Harmonic Distortion (THD)
Spectrum of Jitter
Spectrum of Multytone 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
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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 Multytone Distortion
- Spectrum of Noise Distortion
- Spectrum of Jitter
Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:
Type test:
Table
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
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:
Type test:
Table
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
Time, ms:
Channel:
Brief information
During the test, played a pulse with a sampling frequency of 44.1 kHz and the recording is performed with a sampling frequency of 192 kHz / 24-bit
The impulse response can identify the type of digital filter DAC.
it is a translation from the Russian language. The original text of the report in Russian. Suggest alternative translation possible through the forum, feedback or select text and press Ctrl+Enter (anonymously).
Spectra of high resolution
Graphics setting view
Range, dB:
Channel:
Level, dBFS:
Scale:
Table
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
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
Frequency band, Hz:
Range, dB:
Channel:
Type test:
Table
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
