Measurement's report Astell&Kern AK120 test and graphs - Reference Audio Analyzer

Reports / Astell&Kern / AK120 / A set of device tests as a headphone amplifier - report for a pro

Test report Astell&Kern AK120 (report for a pro)






Test report - general data of Astell&Kern AK120 as AMP mode

Frequency response, Impedance and Frequency response with standard headphones


Graphics setting view
Range, dB:


General results
General results
Astell&Kern AK120
Channel
Left
Average variation in FR in the band 40 Hz to 15 kHz, dB
-0,15, 0,18
Average value of impedance band in 40 Hz to 15 kHz, ohm
4,6
Max voltage output
VRMS
dBV
Maximum current output at loaded
ohm
mA
Max power output
ohm
mW
dBm

The table shows a most important technical characteristics of Astell&Kern AK120



Test conditions
  • For record of test signals RAA was used ADC: E-MU 1616m
  • During tests RAA software-hardware measuring complex was used galvanic isolated power transformer and was excluded the effect of ground loop in the spectra



Frequency response of Astell&Kern AK120 as AMP mode


Graphics setting view
Range, dB:




Table of measured characteristics
Frequency response Astell&Kern AK120
Channel
Left
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,16, 0,17

Impedance of Astell&Kern AK120 as AMP mode





Table of measured characteristics
Impedance Astell&Kern AK120
Channel
Left
Impedance average in band from 40 Hz to 15 kHz, ohm
4,6
Resistance at 500 Hz, ohm
4,7
Resistance at 1000 Hz, ohm
4,8
The minimum value in band from 40 Hz to 15 kHz at frequency, Hz
205,8
The minimum value in band from 40 Hz to 15 kHz, ohm
4,2
The maximum value in band from 40 Hz to 15 kHz at frequency, Hz
591,1
The maximum value in band from 40 Hz to 15 kHz, ohm
4,9

Frequency response of Astell&Kern AK120 with loaded resistors as AMP mode


Graphics setting view
Range, dB:




Table of measured characteristics
Frequency response of amplifier headphone amplifier Astell&Kern AK120
with resistive load
Channel
Left
Variation in frequency response in band 40 Hz to 15 kHz loaded 16 ohm, dB
0,28
Variation in frequency response in band 40 Hz to 15 kHz loaded 32 ohm, dB
0,16
Variation in frequency response in band 40 Hz to 15 kHz loaded 50 ohm, dB
0,11
Variation in frequency response in band 40 Hz to 15 kHz loaded 100 ohm, dB
0,06
Variation in frequency response in band 40 Hz to 15 kHz loaded 250 ohm, dB
0,02
Variation in frequency response in band 40 Hz to 15 kHz loaded 600 ohm, dB
0,01

Frequency response of Astell&Kern AK120 loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:




Table of measured characteristics
Frequency response of the headphone amplifier Astell&Kern AK120
loaded dynamic headphone type
Channel
Left
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
0,56

Deviation of frequency response of Astell&Kern AK120 loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:




Table of measured characteristics
Frequency response of amplifier Astell&Kern AK120
loaded dynamic headphone type
Channel
Left
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
0,47

Frequency response of Astell&Kern AK120 loaded type balance armature headphone type (one driver) as AMP mode


Graphics setting view
Range, dB:




Table of measured characteristics
Frequency response of amplifier Astell&Kern AK120
loaded type balanced armature
Channel
Left
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
1,95

Deviation of frequency response of Astell&Kern AK120 loaded type balance armature headphone type (one driver) as AMP mode


Graphics setting view
Range, dB:




Table of measured characteristics
Frequency response of amplifier Astell&Kern AK120
loaded type balanced armature
Channel
Left
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
2,02



Close

Measurements of Astell&Kern AK120 were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Astell&Kern AK120 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.




Kuznetsov Roman
Founder of RAA



Known by the nickname romanrex
Аuthor of articles iXBT.com



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Astell&Kern AK120 is available in reports and services. You are in a professional report.

Information for entry level users

Information for professionals

reports for a pro(Headphone amplifier)
(DAC Line Out)
Comparison of on-line graphs






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Comments

Commentary view:





user142
2020-06-27 08:48:46

Комментарий к отчету новичков для Astell&Kern AK120
А какой плеер более "продвинут" АК120 или АК70 мк2?
Заранее благодарю за ответ, с ув. Михаил.
Reply


romanrex
2020-06-27 10:48:02

Комментарий к отчету новичков для Astell&Kern AK120

user142 2020-06-27 08:48:46
Комментарий к отчету новичков для Astell&Kern AK120
А какой плеер более "продвинут" АК120 или АК70 мк2?
Заранее благодарю за ответ, с ув. Михаил.


Функционально - более новый AK70 MK2, а по звуку - пока не было на тестах.
Reply


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