Measurement's report Astell&Kern AK380 AMP Unbalanced Norm test and graphs - Reference Audio Analyzer

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Test report Astell&Kern AK380 AMP: Unbalanced Norm (report for a pro)






Test report - general data of Astell&Kern AK380 AMP Unbalanced Norm as AMP mode

Frequency response, Impedance and Frequency response with standard headphones


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Range, dB:

The maximum level of voltage from the musical power



General results
General results
Astell&Kern AK380 AMP Unbalanced Norm
Channel
Center/Summary
Average variation in FR in the band 40 Hz to 15 kHz, dB
-0,25, 0,06
Average value of impedance band in 40 Hz to 15 kHz, ohm
0,7
Max voltage output
VRMS
dBV
Pure or equal class AF.A.Q.
1,85
5,32
Optimal or equal class ABF.A.Q.
1,85
5,32
Hard or equal class BF.A.Q.
1,85
5,32
Max, before clippingF.A.Q.
1,85
5,32
Maximum current output at loaded
ohm
mA
Pure or equal class AF.A.Q.
30,5
10,53
Optimal or equal class ABF.A.Q.
30,5
33,26
Hard or equal class BF.A.Q.
30,5
41,87
Max, before clippingF.A.Q.
24,5
58,09
Max power output
ohm
mW
dBm
Pure or equal class AF.A.Q.
198,9
8,52
9,30
Optimal or equal class ABF.A.Q.
62,4
53,27
17,26
Hard or equal class BF.A.Q.
30,5
53,48
17,28
Max, before clippingF.A.Q.
24,5
82,66
19,17

The table shows a most important technical characteristics of Astell&Kern AK380 AMP Unbalanced Norm

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



Test conditions



Frequency response of Astell&Kern AK380 AMP Unbalanced Norm as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response Astell&Kern AK380 AMP Unbalanced Norm
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,15, 0,05
-0,15, 0,05

Impedance of Astell&Kern AK380 AMP Unbalanced Norm as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Impedance Astell&Kern AK380 AMP Unbalanced Norm
Channel
Left
Right
Impedance average in band from 40 Hz to 15 kHz, ohm
0,6
0,7
Resistance at 500 Hz, ohm
0,6
0,7
Resistance at 1000 Hz, ohm
0,6
0,7
The minimum value in band from 40 Hz to 15 kHz at frequency, Hz
600,5
799,7
The minimum value in band from 40 Hz to 15 kHz, ohm
0,6
0,7
The maximum value in band from 40 Hz to 15 kHz at frequency, Hz
14028,9
14028,9
The maximum value in band from 40 Hz to 15 kHz, ohm
0,7
0,7

Crosstalk of Astell&Kern AK380 AMP Unbalanced Norm as AMP mode


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Range, dB:
Channel:
Load, ohm:




Table of measured characteristics

Crosstalk Phase of Astell&Kern AK380 AMP Unbalanced Norm as AMP mode


Graphics setting view
Channel:
Load, ohm:



Frequency response of Astell&Kern AK380 AMP Unbalanced Norm with loaded resistors as AMP mode


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Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier headphone amplifier Astell&Kern AK380 AMP Unbalanced Norm
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
0,01
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


Frequency response of Astell&Kern AK380 AMP Unbalanced Norm loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of the headphone amplifier Astell&Kern AK380 AMP Unbalanced Norm
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
0,43

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


Deviation of frequency response of Astell&Kern AK380 AMP Unbalanced Norm loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier Astell&Kern AK380 AMP Unbalanced Norm
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
0,07

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


Frequency response of Astell&Kern AK380 AMP Unbalanced Norm 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 Astell&Kern AK380 AMP Unbalanced Norm
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
0,29

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


Deviation of frequency response of Astell&Kern AK380 AMP Unbalanced Norm 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 Astell&Kern AK380 AMP Unbalanced Norm
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
0,30

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




Maximum voltage output level vs load of Astell&Kern AK380 AMP Unbalanced Norm as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum voltage output level vs load Astell&Kern AK380 AMP Unbalanced Norm (the source data for the spectra)
Limit
Pure 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
0,16
-16,05
0,44
-7,06
0,63
-4,07
0,88
-1,07
loaded 25 ohm
0,23
-12,93
0,64
-3,93
1,01
0,06
1,42
3,06
loaded 31 ohm
0,32
-9,87
1,01
0,12
1,28
2,12
1,43
3,13
loaded 62 ohm
0,46
-6,78
1,82
5,22
1,82
5,22
1,82
5,22
loaded 100 ohm
0,92
-0,74
1,83
5,26
1,83
5,26
1,83
5,26
loaded 199 ohm
1,30
2,29
1,84
5,29
1,84
5,29
1,84
5,29
loaded 300 ohm
1,46
3,30
1,84
5,30
1,84
5,30
1,84
5,30
loaded 763 ohm
1,64
4,31
1,84
5,31
1,84
5,31
1,84
5,31
Not loaded
1,85
5,32
1,85
5,32
1,85
5,32
1,85
5,32





The maximum level of voltage from the musical power of Astell&Kern AK380 AMP Unbalanced Norm as AMP mode

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Brief information


Table of measured characteristics
Recommended impedances for headphones for Astell&Kern AK380 AMP Unbalanced Norm
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 - 689 ohm
8 - 689 ohm
For Over-Ear Headphones
29 - 86 ohm
8 - 86 ohm


Table of measured characteristics
Astell&Kern AK380 AMP Unbalanced Norm
Output Impedance
0.65 ohm
Power characteristics of the
Voltage
Current
Equivalent class A F.A.Q.
1.85 VRMS
5.32 dBV
9.21 mA
19.28 dB(mA)
Equivalent class AB F.A.Q.
1.85 VRMS
5.32 dBV
29.09 mA
29.28 dB(mA)
Equivalent class B F.A.Q.
1.85 VRMS
5.32 dBV
40.98 mA
32.25 dB(mA)
Maximum mode F.A.Q.
1.85 VRMS
5.32 dBV
57.21 mA
35.15 dB(mA)

Maximum current level output vs load of Astell&Kern AK380 AMP Unbalanced Norm as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum current level output vs load Astell&Kern AK380 AMP Unbalanced Norm (the source data for the spectra)
Level, mA
Pure 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
9,97
19,97
28,06
28,96
39,62
31,96
55,99
34,96
loaded 25 ohm
9,21
19,29
25,95
28,28
41,11
32,28
58,09
35,28
loaded 31 ohm
10,53
20,45
33,26
30,44
41,87
32,44
46,99
33,44
loaded 62 ohm
7,34
17,32
29,22
29,31
29,22
29,31
29,22
29,31
loaded 100 ohm
9,18
19,26
18,32
25,26
18,32
25,26
18,32
25,26
loaded 199 ohm
6,54
16,32
9,24
19,32
9,24
19,32
9,24
19,32
loaded 300 ohm
4,87
13,76
6,14
15,76
6,14
15,76
6,14
15,76
loaded 763 ohm
2,15
6,66
2,42
7,66
2,42
7,66
2,42
7,66
Not loaded
0,04
-28,66
0,04
-28,66
0,04
-28,66
0,04
-28,66



Maximum power level output level vs load of Astell&Kern AK380 AMP Unbalanced Norm as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum power level output level vs load Astell&Kern AK380 AMP Unbalanced Norm (the source data for the spectra)
Limit
Pure 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
1,57
1,96
12,44
10,95
24,80
13,94
49,52
16,95
loaded 25 ohm
2,08
3,18
16,50
12,17
41,40
16,17
82,66
19,17
loaded 31 ohm
3,38
5,29
33,74
15,28
53,48
17,28
67,34
18,28
loaded 62 ohm
3,36
5,27
53,27
17,26
53,27
17,26
53,27
17,26
loaded 100 ohm
8,43
9,26
33,56
15,26
33,56
15,26
33,56
15,26
loaded 199 ohm
8,52
9,30
17,00
12,30
17,00
12,30
17,00
12,30
loaded 300 ohm
7,13
8,53
11,30
10,53
11,30
10,53
11,30
10,53
loaded 763 ohm
3,54
5,49
4,46
6,49
4,46
6,49
4,46
6,49
Not loaded
0,07
-11,67
0,07
-11,67
0,07
-11,67
0,07
-11,67





THD vs load vs output voltage of Astell&Kern AK380 AMP Unbalanced Norm as AMP mode


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




Table of measured characteristics

Spectrum of Total Harmonic Distortion vs Level of Astell&Kern AK380 AMP Unbalanced Norm 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:



Spectrum of IMD SMPTE vs Level of Astell&Kern AK380 AMP Unbalanced Norm 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:



Spectrum of IMD CCIF vs Level of Astell&Kern AK380 AMP Unbalanced Norm 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:



Spectrum of Multitone Distortion vs Level vs Load of Astell&Kern AK380 AMP Unbalanced Norm 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:




On-line comparison and selection services for Astell&Kern AK380 AMP Unbalanced Norm

The automatic selection of the optimal AMP models from Astell&Kern AK380 AMP Unbalanced Norm.
from the measured power parameters of the amplifying part and the measured parameters of the headphones for different purpose of use.


скрыть

Measurements of Astell&Kern AK380 AMP Unbalanced Norm were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Astell&Kern AK380 AMP Unbalanced Norm 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



Known by the nickname romanrex
Аuthor of articles iXBT.com




Astell&Kern AK380 AMP is available in reports and services. You are in a professional report.

Service and suite of tests

Information for all

Review

Comparison of on-line graphs






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