Measurement's report xDuoo X20 Unbalance test and graphs - Reference Audio Analyzer
xDuoo X20
Headphone amplifierBalance
Unbalance
Headphone amplifierBalance
Unbalance



reports / xDuoo / xDuoo X20 / Unbalance / Amplifier path / report for a pro

Test report xDuoo X20: Unbalance (report for a pro)



About this report
This is a report for professionals with a suite of test of headphone amplifier.

You can see a simple report for "dummies" with explanations of the main characteristics for xDuoo X20 Unbalance

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

A suite of tests for a headphone amplifier can be applied to just a universal output without a formal presence of an amplifier, if in this mode you can connect headphones to this output. Based on the results of the tests, you can understand the real picture, is the output powerful enough or not, with the initial data on the circuitry as a "black box".



Test report - general data of xDuoo X20 Unbalance as AMP mode

Frequency response, Impedance and Frequency response with standard headphones


Graphics setting view
Range, dB:

The maximum level of voltage from the musical power

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General results
General results
xDuoo X20 Unbalance
Channel
Center/Summary
Average variation in FR in the band 40 Hz to 15 kHz, dB
-0,06, 0,03
Average value of impedance band in 40 Hz to 15 kHz, ohm
0,1
Max voltage output
VRMS
dBV
Clear or equal class AF.A.Q.
1,84
5,28
Optimal or equal class ABF.A.Q.
2,92
9,32
Hard or equal class BF.A.Q.
2,92
9,32
Max, before clippingF.A.Q.
2,92
9,32
Maximum current output at loaded
ohm
mA
Clear or equal class AF.A.Q.
15,8
103,12
Optimal or equal class ABF.A.Q.
15,8
163,42
Hard or equal class BF.A.Q.
15,8
163,42
Max, before clippingF.A.Q.
15,8
163,42
Max power output
ohm
mW
dBm
Clear or equal class AF.A.Q.
15,8
168,00
22,25
Optimal or equal class ABF.A.Q.
15,8
421,98
26,25
Hard or equal class BF.A.Q.
15,8
421,98
26,25
Max, before clippingF.A.Q.
15,8
421,98
26,25

The table shows a most important technical characteristics of xDuoo X20 Unbalance

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



Test conditions


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Amplifier type :
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A set of tests the amplifier contains :


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Frequency response of xDuoo X20 Unbalance as AMP mode


Graphics setting view
Range, dB:
Channel:


Brief information
Translation of the description is not yet ready

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


Table
Frequency response xDuoo X20 Unbalance
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,06, 0,03
-0,06, 0,03

Impedance of xDuoo X20 Unbalance as AMP mode


Graphics setting view
Channel:


Brief information
Translation of the description is not yet ready

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


Table
Impedance xDuoo X20 Unbalance
Channel
Left
Right
Impedance average in band from 40 Hz to 15 kHz, ohm
0,1
0,1
Resistance at 500 Hz, ohm
0,1
0,1
Resistance at 1000 Hz, ohm
0,1
0,1
The minimum value in band from 40 Hz to 15 kHz at frequency, Hz
5940,0
5940,0
The minimum value in band from 40 Hz to 15 kHz, ohm
0,1
0,1
The maximum value in band from 40 Hz to 15 kHz at frequency, Hz
7910,5
7910,5
The maximum value in band from 40 Hz to 15 kHz, ohm
0,1
0,1


Comparison of the parameters by on-line services

Comparison of basic characteristics the

Impedance.
Voltage, Current and Impedance

Crosstalk of xDuoo X20 Unbalance as AMP mode


Graphics setting view
Range, dB:
Channel:
Load, ohm:


Brief information
Translation of the description is not yet ready

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


Table

Crosstalk Phase of xDuoo X20 Unbalance as AMP mode


Graphics setting view
Channel:
Load, ohm:


Brief information
Translation of the description is not yet ready

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

Frequency response of xDuoo X20 Unbalance with loaded resistors as AMP mode


Graphics setting view
Range, dB:
Channel:


Brief information
Translation of the description is not yet ready

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


Table
Frequency response of amplifier headphone amplifier xDuoo X20 Unbalance
with resistive load
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded 16 ohm, dB
0,01
Variation in frequency response in band 40 Hz to 15 kHz loaded 32 ohm, dB
0,00
Variation in frequency response in band 40 Hz to 15 kHz loaded 50 ohm, dB
0,00
Variation in frequency response in band 40 Hz to 15 kHz loaded 100 ohm, dB
0,00
Variation in frequency response in band 40 Hz to 15 kHz loaded 250 ohm, dB
0,00
Variation in frequency response in band 40 Hz to 15 kHz loaded 600 ohm, dB
0,00

*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 the frequency response of xDuoo X20 Unbalance changes when connected to different headphones? In the example the xDuoo X20 Unbalance and headphones Sennheiser CX 5.00, Sunrise Dragon Default, Audio-Technica ATH-E40, Apple EarPods, Enigma Acoustics & Lotoo Dharma D200 ). You can choose and compare bundles with other headphones .

Frequency response of xDuoo X20 Unbalance loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:


Brief information
Translation of the description is not yet ready

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


Table
Frequency response of the headphone amplifier xDuoo X20 Unbalance
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
0,11

*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 the frequency response of xDuoo X20 Unbalance changes when connected to different headphones? In the example the xDuoo X20 Unbalance and headphones Grado eGrado, VE Monk Plus, Jays v-Jays Small ). You can choose and compare bundles with other headphones .

Deviation of frequency response of xDuoo X20 Unbalance loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:


Brief information
Translation of the description is not yet ready

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


Table
Frequency response of amplifier xDuoo X20 Unbalance
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
0,02

*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 the frequency response of xDuoo X20 Unbalance changes when connected to different headphones? In the example the xDuoo X20 Unbalance and headphones Grado eGrado, VE Monk Plus, Jays v-Jays Small ). You can choose and compare bundles with other headphones .

Frequency response of xDuoo X20 Unbalance loaded type balance armature headphone type (one driver) as AMP mode


Graphics setting view
Range, dB:
Channel:


Brief information
Translation of the description is not yet ready

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


Table
Frequency response of amplifier xDuoo X20 Unbalance
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
0,08

*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 the frequency response of xDuoo X20 Unbalance changes when connected to different headphones? In the example the xDuoo X20 Unbalance and headphones Sony XBA-Z5, Creative In-Ear 3, Phiaton PS 320, Dunu DN-2002, iBasso IT03, Dunu DN 900, Oriolus Mellianus ). You can choose and compare bundles with other headphones .

Deviation of frequency response of xDuoo X20 Unbalance loaded type balance armature headphone type (one driver) as AMP mode


Graphics setting view
Range, dB:
Channel:


Brief information
Translation of the description is not yet ready

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


Table
Frequency response of amplifier xDuoo X20 Unbalance
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
0,06

*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 the frequency response of xDuoo X20 Unbalance changes when connected to different headphones? In the example the xDuoo X20 Unbalance and headphones Sony XBA-Z5, Creative In-Ear 3, Phiaton PS 320, Dunu DN-2002, iBasso IT03, Dunu DN 900, Oriolus Mellianus ). You can choose and compare bundles with other headphones .



Maximum voltage output level vs load of xDuoo X20 Unbalance as AMP mode


Graphics setting view
Channel:


Brief information
Translation of the description is not yet ready

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


Table
Maximum voltage output level vs load xDuoo X20 Unbalance (the source data for the spectra)
Limit
Clear or equal class AF.A.Q.
Optimal or equal class ABF.A.Q.
Hard or equal class BF.A.Q.
Max, before clippingF.A.Q.
Level
VRMS
dBV
VRMS
dBV
VRMS
dBV
VRMS
dBV
loaded 16 ohm
1,63
4,24
2,58
8,24
2,58
8,24
2,58
8,24
loaded 25 ohm
1,63
4,27
2,59
8,27
2,59
8,27
2,59
8,27
loaded 31 ohm
1,84
5,28
2,59
8,28
2,59
8,28
2,59
8,28
loaded 62 ohm
1,64
4,30
2,60
8,30
2,60
8,30
2,92
9,30
loaded 100 ohm
1,64
4,31
2,92
9,31
2,92
9,31
2,92
9,31
loaded 199 ohm
1,64
4,31
2,92
9,31
2,92
9,31
2,92
9,31
loaded 300 ohm
1,64
4,32
2,92
9,32
2,92
9,32
2,92
9,32
loaded 763 ohm
1,64
4,32
2,92
9,32
2,92
9,32
2,92
9,32
Not loaded
1,64
4,32
2,92
9,32
2,92
9,32
2,92
9,32




Comparison of the parameters by on-line services

Comparison of the power characteristics of the

Comparison of the power characteristics of the xDuoo X20 Unbalance.



Comparison of the power characteristics of the

Comparison the xDuoo X20 Unbalance and another amplifiers by loudness (Volume Level).


Comparison of basic characteristics the

Operating mode of the amplifiers (equivalent class F.A.Q.): Voltage.
Voltage, Current and Impedance



The maximum level of voltage from the musical power of xDuoo X20 Unbalance as AMP mode

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Brief information


Table
Recommended impedances for headphones for xDuoo X20 Unbalance
Recommended impedance for headphones from the range
8 - 1008 Ом для режима работы усилителя
Equivalent class A F.A.Q.
Max, before clippingF.A.Q.
For In-Ear Headphones
8 - 547 ohm
8 - 1007 ohm
For Over-Ear Headphones
8 - 69 ohm
8 - 218 ohm


Table
xDuoo X20 Unbalance
Output Impedance
0.12 ohm
Power characteristics of the
Voltage
Current
Equivalent class A F.A.Q.
1.64 VRMS
4.32 dBV
103.53 mA
40.30 dB(mA)
Equivalent class AB F.A.Q.
2.92 VRMS
9.32 dBV
164.07 mA
44.30 dB(mA)
Equivalent class B F.A.Q.
2.92 VRMS
9.32 dBV
164.07 mA
44.30 dB(mA)
Maximum mode F.A.Q.
2.92 VRMS
9.32 dBV
164.07 mA
44.30 dB(mA)


Comparison of the parameters by on-line services

Comparison of the power characteristics of the

Comparison of the power characteristics of the and interaction headphones xDuoo X20 Unbalance: Enigma Acoustics & Lotoo Dharma D200, Sennheiser CX 5.00, Sunrise Dragon Default, Audio-Technica ATH-E40, Apple EarPods, Grado eGrado, VE Monk Plus, Jays v-Jays Small, Oriolus MK2, Sony XBA-Z5, Creative In-Ear 3, Phiaton PS 320, Dunu DN-2002, Dunu DN 900.

Comparison of volume gain AMPs

Comparison the xDuoo X20 Unbalance and another amplifiers by loudness (Volume Level).

Maximum current level output vs load of xDuoo X20 Unbalance as AMP mode


Graphics setting view
Channel:


Brief information
Translation of the description is not yet ready

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


Table
Maximum current level output vs load xDuoo X20 Unbalance (the source data for the spectra)
Level, mA
Clear or equal class AF.A.Q.
Optimal or equal class ABF.A.Q.
Hard or equal class BF.A.Q.
Max, before clippingF.A.Q.
Level
mA
dB(mA)
mA
dB(mA)
mA
dB(mA)
mA
dB(mA)
loaded 16 ohm
103,12
40,27
163,42
44,27
163,42
44,27
163,42
44,27
loaded 25 ohm
66,70
36,48
105,70
40,48
105,70
40,48
105,70
40,48
loaded 31 ohm
60,20
35,59
85,04
38,59
85,04
38,59
85,04
38,59
loaded 62 ohm
26,30
28,40
41,67
32,40
41,67
32,40
46,76
33,40
loaded 100 ohm
16,42
24,31
29,20
29,31
29,20
29,31
29,20
29,31
loaded 199 ohm
8,26
18,34
14,69
23,34
14,69
23,34
14,69
23,34
loaded 300 ohm
5,48
14,77
9,74
19,77
9,74
19,77
9,74
19,77
loaded 763 ohm
2,16
6,67
3,83
11,67
3,83
11,67
3,83
11,67
Not loaded
0,03
-29,66
0,06
-24,66
0,06
-24,66
0,06
-24,66




Comparison of the parameters by on-line services

Comparison of basic characteristics the

Operating mode of the amplifiers (equivalent class F.A.Q.): Current.
Voltage, Current and Impedance

Maximum power level output level vs load of xDuoo X20 Unbalance as AMP mode


Graphics setting view
Channel:


Brief information
Translation of the description is not yet ready

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


Table
Maximum power level output level vs load xDuoo X20 Unbalance (the source data for the spectra)
Limit
Clear or equal class AF.A.Q.
Optimal or equal class ABF.A.Q.
Hard or equal class BF.A.Q.
Max, before clippingF.A.Q.
Level
mW
dBm
mW
dBm
mW
dBm
mW
dBm
loaded 16 ohm
168,00
22,25
421,98
26,25
421,98
26,25
421,98
26,25
loaded 25 ohm
108,99
20,37
273,75
24,37
273,75
24,37
273,75
24,37
loaded 31 ohm
110,55
20,44
220,56
23,44
220,56
23,44
220,56
23,44
loaded 62 ohm
43,15
16,35
108,37
20,35
108,37
20,35
136,42
21,35
loaded 100 ohm
26,97
14,31
85,28
19,31
85,28
19,31
85,28
19,31
loaded 199 ohm
13,58
11,33
42,93
16,33
42,93
16,33
42,93
16,33
loaded 300 ohm
9,01
9,55
28,48
14,55
28,48
14,55
28,48
14,55
loaded 763 ohm
3,54
5,50
11,21
10,49
11,21
10,49
11,21
10,49
Not loaded
0,05
-12,67
0,17
-7,67
0,17
-7,67
0,17
-7,67





THD vs load vs output voltage of xDuoo X20 Unbalance as AMP mode


Graphics setting view
Channel:
Load, ohm:
Type test:


Brief information
Full translation of the description is not yet ready

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


Table

Spectrum of Total Harmonic Distortion vs Level of xDuoo X20 Unbalance as AMP mode

Not loaded


Graphics setting view
Channel:
Level, dBV:

Loaded 15,8 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 24,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 30,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 62,4 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 100 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 198,9 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 300 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 763 ohm


Graphics setting view
Channel:
Level, dBV/dBm:


Brief information
Full translation of the description is not yet ready

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

Spectrum of IMD SMPTE vs Level of xDuoo X20 Unbalance as AMP mode

Not loaded


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

Loaded 15,8 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 24,5 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 30,5 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 62,4 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 100 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 198,9 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 300 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:

Loaded 763 ohm


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBV/dBm:


Brief information
Translation of the description is not yet ready

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

Spectrum of IMD CCIF vs Level of xDuoo X20 Unbalance as AMP mode

Not loaded


Graphics setting view
Channel:
Level, dBV:

Loaded 15,8 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 24,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 30,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 62,4 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 100 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 198,9 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 300 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 763 ohm


Graphics setting view
Channel:
Level, dBV/dBm:


Brief information
Translation of the description is not yet ready

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

Spectrum of Multitone Distortion vs Level vs Load of xDuoo X20 Unbalance as AMP mode

Not loaded


Graphics setting view
Channel:
Level, dBV:

Loaded 15,8 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 24,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 30,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 62,4 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 100 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 198,9 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 300 ohm


Graphics setting view
Channel:
Level, dBV/dBm:

Loaded 763 ohm


Graphics setting view
Channel:
Level, dBV/dBm:


Brief information
Translation of the description is not yet ready

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


On-line comparison and selection services for xDuoo X20 Unbalance

The automatic selection of the optimal AMP models from xDuoo X20 Unbalance.
from the measured power parameters of the amplifying part and the measured parameters of the headphones for different purpose of use.



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