Measurement's report ASUS Xonar U7 test and graphs - Reference Audio Analyzer

Reports / ASUS / Xonar U7 / A set of device tests as a headphone amplifier - report for a pro

Test report ASUS Xonar U7 (report for a pro)






Test report - general data of ASUS Xonar U7 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


General results
General results
ASUS Xonar U7
Channel
Summary (Right + Left)
Average variation in FR in the band 40 Hz to 15 kHz, dB
-0,06, 0,05
Average value of impedance band in 40 Hz to 15 kHz, ohm
21,2
Max voltage output
VRMS
dBV
Pure or equal class A
0,93
-0,62
Optimal or equal class AB
1,31
2,37
Hard or equal class B
1,31
2,37
Max, before clipping
1,31
2,37
Maximum current output at loaded
ohm
mA
Pure or equal class A
15,8
1,14
Optimal or equal class AB
198,9
3,00
Hard or equal class B
15,8
35,84
Max, before clipping
15,8
35,84
Max power output
ohm
mW
dBm
Pure or equal class A
300,0
0,16
-7,98
Optimal or equal class AB
763,0
2,14
3,31
Hard or equal class B
15,8
20,30
13,07
Max, before clipping
15,8
20,30
13,07

The table shows a most important technical characteristics of ASUS Xonar U7

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



Test conditions



Frequency response of ASUS Xonar U7 as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response ASUS Xonar U7
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 ASUS Xonar U7 as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Impedance ASUS Xonar U7
Channel
Left
Right
Impedance average in band from 40 Hz to 15 kHz, ohm
21,3
21,2
Resistance at 500 Hz, ohm
20,9
20,8
Resistance at 1000 Hz, ohm
20,9
20,8
The minimum value in band from 40 Hz to 15 kHz at frequency, Hz
14028,9
14028,9
The minimum value in band from 40 Hz to 15 kHz, ohm
20,7
20,6
The maximum value in band from 40 Hz to 15 kHz at frequency, Hz
45,6
45,6
The maximum value in band from 40 Hz to 15 kHz, ohm
25,1
24,9

Crosstalk of ASUS Xonar U7 as AMP mode


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




Table of measured characteristics

Crosstalk Phase of ASUS Xonar U7 as AMP mode


Graphics setting view
Channel:
Load, ohm:



Frequency response of ASUS Xonar U7 with loaded resistors as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier headphone amplifier ASUS Xonar U7
with resistive load
Channel
Summary (Right + Left)
Variation in frequency response in band 40 Hz to 15 kHz loaded 16 ohm, dB
0,97
Variation in frequency response in band 40 Hz to 15 kHz loaded 32 ohm, dB
0,69
Variation in frequency response in band 40 Hz to 15 kHz loaded 50 ohm, dB
0,52
Variation in frequency response in band 40 Hz to 15 kHz loaded 100 ohm, dB
0,31
Variation in frequency response in band 40 Hz to 15 kHz loaded 250 ohm, dB
0,14
Variation in frequency response in band 40 Hz to 15 kHz loaded 600 ohm, dB
0,06

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


Frequency response of ASUS Xonar U7 loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of the headphone amplifier ASUS Xonar U7
loaded dynamic headphone type
Channel
Summary (Right + Left)
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
1,84

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


Deviation of frequency response of ASUS Xonar U7 loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier ASUS Xonar U7
loaded dynamic headphone type
Channel
Summary (Right + Left)
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
1,79

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


Frequency response of ASUS Xonar U7 loaded type balance armature headphone type (one driver) as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier ASUS Xonar U7
loaded type balanced armature
Channel
Summary (Right + Left)
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
7,31

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


Deviation of frequency response of ASUS Xonar U7 loaded type balance armature headphone type (one driver) as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier ASUS Xonar U7
loaded type balanced armature
Channel
Summary (Right + Left)
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
6,99

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




Maximum voltage output level vs load of ASUS Xonar U7 as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum voltage output level vs load ASUS Xonar U7 (the source data for the spectra)
Limit
Pure or equal class A
Optimal or equal class AB
Hard or equal class B
Max, before clipping
Level
VRMS
dBV
VRMS
dBV
VRMS
dBV
VRMS
dBV
loaded 16 ohm
0,02
-34,93
0,03
-29,93
0,57
-4,94
0,57
-4,94
loaded 25 ohm
0,02
-33,07
0,06
-24,07
0,70
-3,08
0,70
-3,08
loaded 31 ohm
0,02
-32,17
0,07
-23,17
0,78
-2,18
0,78
-2,18
loaded 62 ohm
0,06
-25,13
0,18
-15,13
0,98
-0,14
0,98
-0,14
loaded 100 ohm
0,06
-24,27
0,27
-11,27
1,09
0,72
1,09
0,72
loaded 199 ohm
0,15
-16,48
0,60
-4,49
1,19
1,51
1,19
1,51
loaded 300 ohm
0,22
-13,21
0,69
-3,21
1,23
1,78
1,23
1,78
loaded 763 ohm
0,32
-9,85
1,28
2,14
1,28
2,14
1,28
2,14
Not loaded
0,93
-0,62
1,31
2,37
1,31
2,37
1,31
2,37





The maximum level of voltage from the musical power of ASUS Xonar U7 as AMP mode




Brief information


Table of measured characteristics
Recommended impedances for headphones for ASUS Xonar U7
Recommended impedance for headphones from the range
8 - 1008 Ом для режима работы усилителя
Equivalent class A
Max, before clipping
For In-Ear Headphones
No recommendation, Amp is too quiet
8 - 658 ohm
For Over-Ear Headphones
No recommendation, Amp is too quiet
No recommendation, Amp is too quiet


Table of measured characteristics
ASUS Xonar U7
Output Impedance
21.23 ohm
Power characteristics of the
Voltage
Current
Equivalent class A
0.93 VRMS
-0.62 dBV
0.84 mA
-1.53 dB(mA)
Equivalent class AB
1.31 VRMS
2.37 dBV
2.55 mA
8.14 dB(mA)
Equivalent class B
1.31 VRMS
2.37 dBV
36.00 mA
31.13 dB(mA)
Maximum mode
1.31 VRMS
2.37 dBV
36.00 mA
31.13 dB(mA)

Maximum current level output vs load of ASUS Xonar U7 as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum current level output vs load ASUS Xonar U7 (the source data for the spectra)
Level, mA
Pure or equal class A
Optimal or equal class AB
Hard or equal class B
Max, before clipping
Level
mA
dB(mA)
mA
dB(mA)
mA
dB(mA)
mA
dB(mA)
loaded 16 ohm
1,14
1,10
2,02
6,10
35,84
31,09
35,84
31,09
loaded 25 ohm
0,91
-0,85
2,55
8,15
28,62
29,13
28,62
29,13
loaded 31 ohm
0,81
-1,85
2,28
7,15
25,51
28,13
25,51
28,13
loaded 62 ohm
0,89
-1,03
2,81
8,97
15,77
23,96
15,77
23,96
loaded 100 ohm
0,61
-4,27
2,73
8,73
10,86
20,72
10,86
20,72
loaded 199 ohm
0,75
-2,46
3,00
9,54
5,98
15,53
5,98
15,53
loaded 300 ohm
0,73
-2,75
2,30
7,24
4,09
12,24
4,09
12,24
loaded 763 ohm
0,42
-7,50
1,68
4,49
1,68
4,49
1,68
4,49
Not loaded
0,02
-34,60
0,03
-31,61
0,03
-31,61
0,03
-31,61



Maximum power level output level vs load of ASUS Xonar U7 as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum power level output level vs load ASUS Xonar U7 (the source data for the spectra)
Limit
Pure or equal class A
Optimal or equal class AB
Hard or equal class B
Max, before clipping
Level
mW
dBm
mW
dBm
mW
dBm
mW
dBm
loaded 16 ohm
0,02
-16,91
0,06
-11,91
20,30
13,07
20,30
13,07
loaded 25 ohm
0,02
-16,96
0,16
-7,96
20,06
13,02
20,06
13,02
loaded 31 ohm
0,02
-17,01
0,16
-8,01
19,84
12,98
19,84
12,98
loaded 62 ohm
0,05
-13,08
0,49
-3,08
15,52
11,91
15,52
11,91
loaded 100 ohm
0,04
-14,27
0,75
-1,27
11,80
10,72
11,80
10,72
loaded 199 ohm
0,11
-9,47
1,79
2,53
7,11
8,52
7,11
8,52
loaded 300 ohm
0,16
-7,98
1,59
2,01
5,02
7,01
5,02
7,01
loaded 763 ohm
0,14
-8,68
2,14
3,31
2,14
3,31
2,14
3,31
Not loaded
0,02
-17,61
0,03
-14,62
0,03
-14,62
0,03
-14,62





THD vs load vs output voltage of ASUS Xonar U7 as AMP mode


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




Table of measured characteristics

Spectrum of Total Harmonic Distortion vs Level of ASUS Xonar U7 as AMP mode

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:

Not loaded


Graphics setting view
Channel:
Level, dBV:



Spectrum of IMD SMPTE vs Level of ASUS Xonar U7 as AMP mode

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:

Not loaded


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



Spectrum of IMD CCIF vs Level of ASUS Xonar U7 as AMP mode

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:

Not loaded


Graphics setting view
Channel:
Level, dBV:



Spectrum of Multitone Distortion vs Level vs Load of ASUS Xonar U7 as AMP mode

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:

Not loaded


Graphics setting view
Channel:
Level, dBV:




On-line comparison and selection services for ASUS Xonar U7

Comparison of basic characteristics: Voltage, Current and Impedance

Compare a changed frequency response the bundles of Xonar U7 and headphones.

Comparison of amplifiers by loudness (Volume Level).

Comparison of the power characteristics of AMPs and interaction headphones. Additional headphone compatibility analytics.

Comparison of the optimal range of volume control

The automatic selection of the optimal AMP models.


Close

Measurements of ASUS Xonar U7 were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The ASUS Xonar U7 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.

I believe that it is important to do not make an absolute assessment of the device, but an aggregate assessment when working together with a headphones and taking into account external factors. This allows you to effectively reveal the potential of the entire set of devices or to make a more optimal choice of components.



Xonar U7 was given for tests by ASUS






Kuznetsov Roman
Founder of RAA



Known by the nickname romanrex
Аuthor of articles iXBT.com



Information for Authors. You can freely use the graphics in your articles with a link to us.



ASUS Xonar U7 is available in reports and services. You are in a professional report.






Original text in Russian page. Translation page is not yet ready

You can help with translation via the: forum, facebook and feedback.

 

Comments

No comments to ASUS Xonar U7
Commentary view:





Want to leave a comment or ask a question? Register now or log in