Measurement's report Astell&Kern AK240 test and graphs - Reference Audio Analyzer

Astell&Kern AK240 is available in reports and services. You are in a professional report.

Service and suite of tests

Information for entry level users

report for a newbie
(Headphone amplifier)

General recommendations

The automatic selection of the optimal AMP models

Information for all

Comparison of on-line graphs


Reports / Astell&Kern / AK240 / DAC Line Out / report for a pro

Test report Astell&Kern AK240 (report for a pro)






Test report - general data of Astell&Kern AK240 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 Astell&Kern AK240
Channel
Center/Summary
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,01, 0,00
Max voltage output at 0 dBFS, VRMS
2,11
Max voltage output at 0 dBFS, dBV
6,49
Max voltage output at 0 dBFS, dBu
8,71
Harmonic distortion at 0,0 dBFS @ 1 kHz, dB
-96,4
Total harmonic distortion at 0,0 dBFS @ 1 kHz, %
0,001521
Harmonic distortion at -3,0 dBFS @ 1 kHz, dB
-111,3
Total harmonic distortion at -3,0 dBFS @ 1 kHz, %
0,000273

The table shows a most important technical characteristics of Astell&Kern AK240

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



Test conditions



Frequency response of Astell&Kern AK240 as Line Out mode


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




Table of measured characteristics
Frequency response Astell&Kern AK240
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,01, 0,00
-0,01, 0,00

Crosstalk of Astell&Kern AK240 as Line Out mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Crosstalk Astell&Kern AK240
Crosstalk at the frequency 100 Hz, dB
-108,8
Crosstalk at the frequency 1000 Hz, dB
-108,4
Crosstalk at the frequency 10000 Hz, dB
-104,7

Crosstalk Phase of Astell&Kern AK240 as Line Out mode


Graphics setting view
Channel:



THD vs output voltage of line out of Astell&Kern AK240 as Line Out mode


Graphics setting view
Channel:
Type test:




Table of measured characteristics
THD vs output voltage of line out Astell&Kern AK240
Max voltage output at 0 dBFS, VRMS
2,11
Max voltage output at 0 dBFS, dBV
6,49
Max voltage output at 0 dBFS, dBu
8,71


Total Harmonic Distortion vs Level (dBFS) of Astell&Kern AK240 as Line Out mode


Graphics setting view
Channel:
Type test:



Impulse response of Astell&Kern AK240 as Line Out mode


Graphics setting view
Time, ms:
Channel:



Impulse Response Envelope (ETC - Energy Time Curve) of Astell&Kern AK240 as Line Out mode


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



Step response of Astell&Kern AK240 as Line Out mode


Graphics setting view
Time, ms:
Channel:





Aliasing of Astell&Kern AK240 as Line Out mode


Graphics setting view
Channel:
Type test:



Checking for correctness of reproduction signals depth more than 16-bit of Astell&Kern AK240 as Line Out mode


Graphics setting view
Channel:
Type test:



Spectra of high resolution

Noise floor spectrum of Astell&Kern AK240 (High resolution graph) as Line Out mode


Graphics setting view
Range, dB:
Channel:
Scale:



Spectrum of Total Harmonic Distortion (THD) of Astell&Kern AK240 (High resolution graph) as Line Out mode


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




Table of measured characteristics
Harmonic distortion
Astell&Kern AK240
Harmonic distortion at 0,0 dBFS @ 1 kHz, dB
-96,4
Total harmonic distortion at 0,0 dBFS @ 1 kHz, %
0,001521
Harmonic distortion at -3,0 dBFS @ 1 kHz, dB
-111,3
Total harmonic distortion at -3,0 dBFS @ 1 kHz, %
0,000273




Table of measured characteristics
The levels of harmonics when applying signal 1 kHz 0 dBFS
Astell&Kern AK240
Harmonic, number
1
2
3
4
5
6
7
8
9
10
The level of harmonics, dB
0,0
-102,6
-98,8
-107,2
-106,2
-116,3
-133,7
-124,0
-126,8
-144,9
Harmonic, number
11
12
13
14
15
16
17
18
19
20
The level of harmonics, dB
-124,4
-140,2
-138,1
-148,2
-146,5
-152,7
-139,4
-146,3
-143,0
-140,4


The levels of harmonics when applying signal 1 kHz -3 dBFS
Astell&Kern AK240
Harmonic, number
1
2
3
4
5
6
7
8
9
10
The level of harmonics, dB
-3,0
-127,1
-118,3
-127,0
-118,1
-144,0
-127,1
-147,5
-134,9
-164,2
Harmonic, number
11
12
13
14
15
16
17
18
19
20
The level of harmonics, dB
-135,5
-153,9
-151,1
-153,7
-143,1
-152,8
-153,3
-146,5
-146,4
-140,5
The data in the tables correspond to by average value of left and right channels

Spectrum of Dynamic Range (-60 dBFS) of Astell&Kern AK240 (High resolution graph) as Line Out mode


Graphics setting view
Range, dB:
Channel:
Scale:



Sine low ammplitude spectrum -90 dBFS of Astell&Kern AK240 (High resolution graph) as Line Out mode


Graphics setting view
Range, dB:
Channel:
Scale:



Spectrum of Intermodulation Distortion (IMD) - SMPTE of Astell&Kern AK240 (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 Astell&Kern AK240 (High resolution graph) as Line Out mode


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



Spectrum of Multitone Distortion of Astell&Kern AK240 (High resolution graph) as Line Out mode


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



Spectrum of Noise Distortion of Astell&Kern AK240 (High resolution graph) as Line Out mode


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



Spectrum of Jitter of Astell&Kern AK240 (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 Astell&Kern AK240
Fundamental tone 11025 Hz, Hz
11025,0000
Variance from 11025 Hz, Hz
0,0000

Spectra vs Amplitude

Total Harmonic Distortion vs Level (dBFS) of Astell&Kern AK240 as Line Out mode


Graphics setting view
Channel:
Level, dBFS:



Spectrum of IMD SMPTE vs Level (dBFS) of Astell&Kern AK240 as Line Out mode


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



Spectrum of IMD CCIF vs Level (dBFS) of Astell&Kern AK240 as Line Out mode


Graphics setting view
Channel:
Level, dBFS:



Spectrum of Multitone Distortion vs Level (dBFS) of Astell&Kern AK240 as Line Out mode


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



Spectrum of Noise Distortion vs Level (dBFS) of Astell&Kern AK240 as Line Out mode


Graphics setting view
Channel:
Level, dBFS:



Close

Measurements of Astell&Kern AK240 were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Astell&Kern AK240 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 AK240 is available in reports and services. You are in a professional report.

Service and suite of tests

Information for entry level users

report for a newbie
(Headphone amplifier)

General recommendations

The automatic selection of the optimal AMP models

Information for all

Comparison of on-line graphs






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