Measurement's report DAART Aquila II Unbalance test and graphs - Reference Audio Analyzer

Reports / DAART / Aquila II / Unbalance / A set of device tests as a headphone amplifier - report for a pro

Test report DAART Aquila II: Unbalance (report for a pro)






Test report - general data of DAART Aquila II Unbalance 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
DAART Aquila II Unbalance
Channel
Center/Summary
Average variation in FR in the band 40 Hz to 15 kHz, dB
-0,06, 0,03
Average value of impedance band in 40 Hz to 15 kHz, ohm
1,1
Max voltage output
VRMS
dBV
Pure or equal class A
7,49
17,49
Optimal or equal class AB
7,49
17,49
Hard or equal class B
7,49
17,49
Max, before clipping
7,49
17,49
Maximum current output at loaded
ohm
mA
Pure or equal class A
30,5
187,76
Optimal or equal class AB
15,8
294,13
Hard or equal class B
15,8
294,13
Max, before clipping
15,8
294,13
Max power output
ohm
mW
dBm
Pure or equal class A
30,5
1075,28
30,32
Optimal or equal class AB
30,5
1702,41
32,31
Hard or equal class B
30,5
1702,41
32,31
Max, before clipping
30,5
1702,41
32,31

The table shows a most important technical characteristics of DAART Aquila II Unbalance

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



Test conditions



Frequency response of DAART Aquila II Unbalance as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response DAART Aquila II Unbalance
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 DAART Aquila II Unbalance as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Impedance DAART Aquila II Unbalance
Channel
Left
Right
Impedance average in band from 40 Hz to 15 kHz, ohm
1,1
1,1
Resistance at 500 Hz, ohm
1,1
1,1
Resistance at 1000 Hz, ohm
1,1
1,1
The minimum value in band from 40 Hz to 15 kHz at frequency, Hz
107,7
52,6
The minimum value in band from 40 Hz to 15 kHz, ohm
1,1
1,1
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
1,1
1,1

Crosstalk of DAART Aquila II Unbalance as AMP mode


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Range, dB:
Channel:
Load, ohm:




Table of measured characteristics

Crosstalk Phase of DAART Aquila II Unbalance as AMP mode


Graphics setting view
Channel:
Load, ohm:



Frequency response of DAART Aquila II Unbalance with loaded resistors as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier headphone amplifier DAART Aquila II Unbalance
with resistive load
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded 16 ohm, dB
0,00
Variation in frequency response in band 40 Hz to 15 kHz loaded 32 ohm, dB
0,00
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 DAART Aquila II Unbalance loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of the headphone amplifier DAART Aquila II Unbalance
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
0,19

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


Deviation of frequency response of DAART Aquila II Unbalance loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier DAART Aquila II Unbalance
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
0,12

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


Frequency response of DAART Aquila II Unbalance 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 DAART Aquila II Unbalance
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
0,54

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


Deviation of frequency response of DAART Aquila II Unbalance 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 DAART Aquila II Unbalance
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
0,52

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




Maximum voltage output level vs load of DAART Aquila II Unbalance as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum voltage output level vs load DAART Aquila II 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
VRMS
dBV
VRMS
dBV
VRMS
dBV
VRMS
dBV
loaded 16 ohm
2,61
8,34
4,65
13,34
4,65
13,34
4,65
13,34
loaded 25 ohm
4,50
13,07
6,36
16,07
6,36
16,07
6,36
16,07
loaded 31 ohm
5,73
15,16
7,21
17,15
7,21
17,15
7,21
17,15
loaded 62 ohm
7,35
17,32
7,35
17,32
7,35
17,32
7,35
17,32
loaded 100 ohm
7,40
17,38
7,40
17,38
7,40
17,38
7,40
17,38
loaded 199 ohm
7,44
17,44
7,44
17,44
7,44
17,44
7,44
17,44
loaded 300 ohm
7,46
17,45
7,46
17,45
7,46
17,45
7,46
17,45
loaded 763 ohm
7,48
17,48
7,48
17,48
7,48
17,48
7,48
17,48
Not loaded
7,49
17,49
7,49
17,49
7,49
17,49
7,49
17,49





The maximum level of voltage from the musical power of DAART Aquila II Unbalance as AMP mode




Brief information


Table of measured characteristics
Recommended impedances for headphones for DAART Aquila II Unbalance
Recommended impedance for headphones from the range
8 - 1008 Ом для режима работы усилителя
Equivalent class A
Max, before clipping
For In-Ear Headphones
8 - 1007 ohm
8 - 1007 ohm
For Over-Ear Headphones
8 - 1007 ohm
8 - 1007 ohm


Table of measured characteristics
DAART Aquila II Unbalance
Output Impedance
1.13 ohm
Power characteristics of the
Voltage
Current
Equivalent class A
7.49 VRMS
17.49 dBV
178.64 mA
45.04 dB(mA)
Equivalent class AB
7.49 VRMS
17.49 dBV
293.99 mA
49.37 dB(mA)
Equivalent class B
7.49 VRMS
17.49 dBV
293.99 mA
49.37 dB(mA)
Maximum mode
7.49 VRMS
17.49 dBV
293.99 mA
49.37 dB(mA)

Maximum current level output vs load of DAART Aquila II Unbalance as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum current level output vs load DAART Aquila II Unbalance (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
165,36
44,37
294,13
49,37
294,13
49,37
294,13
49,37
loaded 25 ohm
183,79
45,29
259,59
48,29
259,59
48,29
259,59
48,29
loaded 31 ohm
187,76
45,47
236,26
47,47
236,26
47,47
236,26
47,47
loaded 62 ohm
117,77
41,42
117,77
41,42
117,77
41,42
117,77
41,42
loaded 100 ohm
74,00
37,38
74,00
37,38
74,00
37,38
74,00
37,38
loaded 199 ohm
37,42
31,46
37,42
31,46
37,42
31,46
37,42
31,46
loaded 300 ohm
24,86
27,91
24,86
27,91
24,86
27,91
24,86
27,91
loaded 763 ohm
9,80
19,83
9,80
19,83
9,80
19,83
9,80
19,83
Not loaded
0,15
-16,49
0,15
-16,49
0,15
-16,49
0,15
-16,49



Maximum power level output level vs load of DAART Aquila II Unbalance as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum power level output level vs load DAART Aquila II 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
mW
dBm
mW
dBm
mW
dBm
mW
dBm
loaded 16 ohm
432,02
26,36
1366,87
31,36
1366,87
31,36
1366,87
31,36
loaded 25 ohm
827,60
29,18
1650,93
32,18
1650,93
32,18
1650,93
32,18
loaded 31 ohm
1075,28
30,32
1702,41
32,31
1702,41
32,31
1702,41
32,31
loaded 62 ohm
865,44
29,37
865,44
29,37
865,44
29,37
865,44
29,37
loaded 100 ohm
547,59
27,38
547,59
27,38
547,59
27,38
547,59
27,38
loaded 199 ohm
278,58
24,45
278,58
24,45
278,58
24,45
278,58
24,45
loaded 300 ohm
185,41
22,68
185,41
22,68
185,41
22,68
185,41
22,68
loaded 763 ohm
73,30
18,65
73,30
18,65
73,30
18,65
73,30
18,65
Not loaded
1,12
0,50
1,12
0,50
1,12
0,50
1,12
0,50





THD vs load vs output voltage of DAART Aquila II Unbalance as AMP mode


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




Table of measured characteristics

Spectrum of Total Harmonic Distortion vs Level of DAART Aquila II Unbalance 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 DAART Aquila II Unbalance 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 DAART Aquila II Unbalance 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 DAART Aquila II Unbalance 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 DAART Aquila II

Comparison of basic characteristics: Voltage, Current and Impedance

Compare a changed frequency response the bundles of Aquila II 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 DAART Aquila II Unbalance were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The DAART Aquila II Unbalance 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



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



DAART Aquila II is available in reports and services. You are in a professional report.

Information for entry level users

reports for a newbie (Headphone amplifier)
The automatic selection of the optimal AMP models





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