Measurement's report xDuoo x20 Bluetooth Android 7 test and graphs - Reference Audio Analyzer
xDuoo x20
Headphone amplifierBalance
Unbalance
Headphone amplifierBalance
Unbalance



Reports / xDuoo / x20 / Bluetooth Android 7 / DAC Line Out / report for a pro

Test report xDuoo x20: Bluetooth Android 7 (report for a pro)






Test report - general data of xDuoo x20 Bluetooth Android 7 as Line Out mode

Frequency response


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

Spectrum of Total Harmonic Distortion (THD)

Spectrum of Jitter


Spectrum of Multitone Distortion



General results
General results xDuoo x20 Bluetooth Android 7
Channel
Center/Summary
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,03, 0,01
Max voltage output at 0 dBFS, VRMS
1,62
Max voltage output at 0 dBFS, dBV
4,20
Max voltage output at 0 dBFS, dBu
6,42
Harmonic distortion at 0,0 dBFS @ 1 kHz, dB
-75,8
Total harmonic distortion at 0,0 dBFS @ 1 kHz, %
0,016261
Harmonic distortion at -3,0 dBFS @ 1 kHz, dB
-75,7
Total harmonic distortion at -3,0 dBFS @ 1 kHz, %
0,016334

The table shows a most important technical characteristics of xDuoo x20 Bluetooth Android 7

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



Test conditions



Frequency response of xDuoo x20 Bluetooth Android 7 as Line Out mode


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




Table of measured characteristics
Frequency response xDuoo x20 Bluetooth Android 7
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,03, 0,01
-0,03, 0,01

Crosstalk of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Crosstalk xDuoo x20 Bluetooth Android 7
Crosstalk at the frequency 100 Hz, dB
-108,3
Crosstalk at the frequency 1000 Hz, dB
-104,1
Crosstalk at the frequency 10000 Hz, dB
-83,7

Crosstalk Phase of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Channel:



THD vs output voltage of line out of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Channel:
Type test:




Table of measured characteristics
THD vs output voltage of line out xDuoo x20 Bluetooth Android 7
Max voltage output at 0 dBFS, VRMS
1,62
Max voltage output at 0 dBFS, dBV
4,20
Max voltage output at 0 dBFS, dBu
6,42


Total Harmonic Distortion vs Level (dBFS) of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Channel:
Type test:



Impulse response of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Time, ms:
Channel:



Impulse Response Envelope (ETC - Energy Time Curve) of xDuoo x20 Bluetooth Android 7 as Line Out mode


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



Step response of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Time, ms:
Channel:



Aliasing of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Channel:
Type test:



Checking for correctness of reproduction signals depth more than 16-bit of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Channel:
Type test:



Spectra of high resolution

Noise floor spectrum of xDuoo x20 Bluetooth Android 7 (High resolution graph) as Line Out mode


Graphics setting view
Range, dB:
Channel:
Scale:



Spectrum of Total Harmonic Distortion (THD) of xDuoo x20 Bluetooth Android 7 (High resolution graph) as Line Out mode


Graphics setting view
Range, dB:
Channel:
Level, dBFS:
Scale:




Table of measured characteristics
Harmonic distortion
xDuoo x20 Bluetooth Android 7
Harmonic distortion at 0,0 dBFS @ 1 kHz, dB
-75,8
Total harmonic distortion at 0,0 dBFS @ 1 kHz, %
0,016261
Harmonic distortion at -3,0 dBFS @ 1 kHz, dB
-75,7
Total harmonic distortion at -3,0 dBFS @ 1 kHz, %
0,016334




Table of measured characteristics
The levels of harmonics when applying signal 1 kHz 0 dBFS
xDuoo x20 Bluetooth Android 7
Harmonic, number
1
2
3
4
5
6
7
8
9
10
The level of harmonics, dB
0,0
-94,5
-91,7
-102,1
-98,5
-107,9
-106,3
-107,4
-102,2
-98,9
Harmonic, number
11
12
13
14
15
16
17
18
19
20
The level of harmonics, dB
-97,4
-76,8
-103,4
-109,2
-101,9
-107,8
-102,7
-109,0
-102,0
-109,8


The levels of harmonics when applying signal 1 kHz -3 dBFS
xDuoo x20 Bluetooth Android 7
Harmonic, number
1
2
3
4
5
6
7
8
9
10
The level of harmonics, dB
-3,0
-103,7
-109,2
-120,2
-108,4
-105,8
-102,5
-106,7
-113,5
-101,3
Harmonic, number
11
12
13
14
15
16
17
18
19
20
The level of harmonics, dB
-97,4
-79,6
-121,3
-121,7
-110,0
-107,3
-117,5
-120,6
-122,5
-120,7
The data in the tables correspond to by average value of left and right channels

Spectrum of Dynamic Range (-60 dBFS) of xDuoo x20 Bluetooth Android 7 (High resolution graph) as Line Out mode


Graphics setting view
Range, dB:
Channel:
Scale:



Sine low ammplitude spectrum -90 dBFS of xDuoo x20 Bluetooth Android 7 (High resolution graph) as Line Out mode


Graphics setting view
Range, dB:
Channel:
Scale:



Spectrum of Intermodulation Distortion (IMD) - SMPTE of xDuoo x20 Bluetooth Android 7 (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 xDuoo x20 Bluetooth Android 7 (High resolution graph) as Line Out mode


Graphics setting view
Range, dB:
Channel:
Level, dBFS:



Spectrum of Multitone Distortion of xDuoo x20 Bluetooth Android 7 (High resolution graph) as Line Out mode


Graphics setting view
Range, dB:
Channel:
Level, dBFS:
Type test:



Spectrum of Noise Distortion of xDuoo x20 Bluetooth Android 7 (High resolution graph) as Line Out mode


Graphics setting view
Range, dB:
Channel:
Level, dBFS:



Spectrum of Jitter of xDuoo x20 Bluetooth Android 7 (High resolution graph) as Line Out mode


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




Table of measured characteristics
The accuracy of the playback speed xDuoo x20 Bluetooth Android 7
Fundamental tone 11025 Hz, Hz
11025,0000
Variance from 11025 Hz, Hz
0,0000

Spectra vs Amplitude

Total Harmonic Distortion vs Level (dBFS) of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Channel:
Level, dBFS:



Spectrum of IMD SMPTE vs Level (dBFS) of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBFS:



Spectrum of IMD CCIF vs Level (dBFS) of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Channel:
Level, dBFS:



Spectrum of Multitone Distortion vs Level (dBFS) of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Channel:
Level, dBFS:
Type test:



Spectrum of Noise Distortion vs Level (dBFS) of xDuoo x20 Bluetooth Android 7 as Line Out mode


Graphics setting view
Channel:
Level, dBFS:









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