Test report Astell & Kern iriver KANN Unbalance

Test report - general data headphone amplifier Astell & Kern iriver KANN Unbalance

Frequency response, Impedance and Frequency response with standard headphones

Graphics setting view

Range, dB:

90 50 24

General results
Astell & Kern iriver KANN Unbalance

Channel

Summary (Right + Left)

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

0,6

Max voltage output

V_RMS

dBV

Pure or equal class A

2,49

7,94

Optimal or equal class AB

3,14

9,94

Hard or equal class B

3,14

9,94

Max, before clipping

3,14

9,94

Maximum current output at loaded

ohm

mA

Pure or equal class A

62,4

11,16

Optimal or equal class AB

62,4

31,44

Hard or equal class B

62,4

44,40

Max, before clipping

15,8

80,73

Max power output

ohm

mW

dBm

Pure or equal class A

198,9

24,69

13,93

Optimal or equal class AB

62,4

61,67

17,90

Hard or equal class B

62,4

123,01

20,90

Max, before clipping

30,5

155,67

21,92

The table shows a most important technical characteristics of Astell & Kern iriver KANN Unbalance

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

Calculate sound pressure level in headphones with online calculator with data entered from the table for Astell & Kern iriver KANN Unbalance

Test conditions

• For record of test signals RAA was used ADC: E-MU 1616m
• The difference between maximum levels output unloaded Astell & Kern iriver KANN Unbalance and input level 0 dBFS E-MU1616m is -6,28 dB (value level for left and right channels)
• The signal was played to the amplifier with DAC: Internal DAC
• The signal was tested with output: Jack
• Was exposed to the level of the signal: Optimal (none maximum) level
• The bit size/format of the test signal: PCM 24 bit
• The source of the test signal: Internal software player
• During tests RAA software-hardware measuring complex was used galvanic isolated power transformer and was excluded the effect of ground loop in the spectra

The report contains the complete data
Version report: V4

Reports and testing methodology is gradually updated. We try to generate the report in such a way that it would have been a single kind of report for all devices, convenient for direct comparison.

We constantly introduce new tests and improving the options for displaying graphs and parameters. It introduces different changes in reports. Because reports are generated automatically, the updates do not take much time.

In the development and implementation of new tests, new reports are more complete. To update some charts and tables may require additional time to process the raw data separately for each device.

Some devices require re-testing.

The history of the development of the report:

CloseMore detailed

Version report: V1

• Frequency response
• Impedance
• Frequency response with loaded resistors
• Variation in frequency response dependence of load dynamic type headphones
• Frequency response vs load balance armature headphone type (one driver)
• Variation in frequency response vs load balance armature headphone type (one driver)

Version report: V2

• Maximum voltage output level vs load
• Maximum current level output vs load
• Maximum power level output level vs load

Version report: V3

• THD vs load vs output voltage
• Harmonic distortion spectrum vs amplitude vs loaded

Version report: V4

• Crosstalk
• Crosstalk Phase
• Spectrum of IMD SMPTE vs Level
• Spectrum of IMD CCIF vs Level
• Spectrum of Multitone Distortion vs Level vs Load



Detailed measurements report of technical characteristics

Frequency response headphone amplifier Astell & Kern iriver KANN Unbalance

Graphics setting view

Range, dB:

90 50 24

Channel:

Center Left Right Left Right

Impedance headphone amplifier Astell & Kern iriver KANN Unbalance

Graphics setting view

Channel:

Center Left Right Left Right

Crosstalk headphone amplifier Astell & Kern iriver KANN Unbalance

Graphics setting view

Range, dB:

90 150

Channel:

Center Left Right Left Right

Load, ohm:

All 15,8 24,5 30,5 62,4 100 198,9 300 763 No load

Crosstalk Phase headphone amplifier Astell & Kern iriver KANN Unbalance

Graphics setting view

Channel:

Center Left Right Left Right

Load, ohm:

15,8 24,5 30,5 62,4 100 198,9 300 763 No load

Frequency response with loaded resistors from Astell & Kern iriver KANN Unbalance

Graphics setting view

Range, dB:

90 50 24 12

Channel:

Center Left Right Left Right

Frequency response of amplifier headphone amplifier Astell & Kern iriver KANN Unbalance
with resistive load

Channel

Summary (Right + Left)

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 headphone amplifier Astell & Kern iriver KANN Unbalance loaded dynamic headphone type

Graphics setting view

Range, dB:

90 50 24 12

Channel:

Center Left Right Left Right

Frequency response of the headphone amplifier Astell & Kern iriver KANN Unbalance
loaded dynamic headphone type

Channel

Summary (Right + Left)

Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB

0,41

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

Deviation of frequency response headphone amplifier Astell & Kern iriver KANN Unbalance loaded dynamic headphone type

Graphics setting view

Range, dB:

90 50 24 12

Channel:

Center Left Right Left Right

Frequency response of amplifier Astell & Kern iriver KANN Unbalance
loaded dynamic headphone type

Channel

Summary (Right + Left)

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 headphone amplifier Astell & Kern iriver KANN Unbalance loaded type balance armature headphone type

Graphics setting view

Range, dB:

90 50 24 12

Channel:

Center Left Right Left Right

Frequency response of amplifier Astell & Kern iriver KANN Unbalance
loaded type balanced armature

Channel

Summary (Right + Left)

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 headphone amplifier Astell & Kern iriver KANN Unbalance loaded type balance armature headphone type

Graphics setting view

Range, dB:

90 50 24 12

Channel:

Center Left Right Left Right

Frequency response of amplifier Astell & Kern iriver KANN Unbalance
loaded type balanced armature

Channel

Summary (Right + Left)

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

Maximum voltage output level vs load Astell & Kern iriver KANN Unbalance

Graphics setting view

Channel:

Center Left Right Left Right

Maximum voltage output level vs load Astell & Kern iriver KANN Unbalance (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

V_RMS

dBV

V_RMS

dBV

V_RMS

dBV

V_RMS

dBV

loaded 16 ohm

0,13

-17,88

0,40

-7,88

0,57

-4,89

1,28

2,11

loaded 25 ohm

0,26

-11,77

0,73

-2,78

1,03

0,22

1,63

4,22

loaded 31 ohm

0,27

-11,23

0,77

-2,23

1,09

0,76

2,18

6,76

loaded 62 ohm

0,70

-3,15

1,96

5,85

2,77

8,85

2,77

8,85

loaded 100 ohm

0,99

-0,12

2,48

7,88

2,78

8,88

2,78

8,88

loaded 199 ohm

2,22

6,91

2,79

8,91

2,79

8,91

2,79

8,91

loaded 300 ohm

2,22

6,92

2,79

8,92

2,79

8,92

2,79

8,92

loaded 763 ohm

2,49

7,93

2,80

8,93

3,14

9,93

3,14

9,93

Not loaded

2,49

7,94

3,14

9,94

3,14

9,94

3,14

9,94

Calculate sound pressure level in headphones with online calculator with data entered from the table for Astell & Kern iriver KANN Unbalance