Measurement's report Violectric HPA V281 Unbalance test and graphs - Reference Audio Analyzer

Violectric HPA V281 is available in reports and services. You are in a professional report.



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Reports / Violectric / HPA V281 / Unbalance / Amplifier path / report for a pro

Test report Violectric HPA V281: Unbalance (report for a pro)






Test report - general data of Violectric HPA V281 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
Violectric HPA V281 Unbalance
Channel
Center/Summary
Average variation in FR in the band 40 Hz to 15 kHz, dB
-0,03, 0,02
Average value of impedance band in 40 Hz to 15 kHz, ohm
0,2
Max voltage output
VRMS
dBV
Pure or equal class A
16,71
24,46
Optimal or equal class AB
17,99
25,10
Hard or equal class B
17,99
25,10
Max, before clipping
17,99
25,10
Maximum current output at loaded
ohm
mA
Pure or equal class A
24,5
217,12
Optimal or equal class AB
24,5
217,12
Hard or equal class B
24,5
217,12
Max, before clipping
24,5
217,12
Max power output
ohm
mW
dBm
Pure or equal class A
62,4
2409,01
33,82
Optimal or equal class AB
62,4
2409,01
33,82
Hard or equal class B
62,4
2409,01
33,82
Max, before clipping
62,4
2409,01
33,82

The table shows a most important technical characteristics of Violectric HPA V281 Unbalance

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



Test conditions



Detailed measurements report of technical characteristics






Frequency response of Violectric HPA V281 Unbalance as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response Violectric HPA V281 Unbalance
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,02, 0,01
-0,02, 0,01

Impedance of Violectric HPA V281 Unbalance as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Impedance Violectric HPA V281 Unbalance
Channel
Left
Right
Impedance average in band from 40 Hz to 15 kHz, ohm
0,3
0,2
Resistance at 500 Hz, ohm
0,3
0,2
Resistance at 1000 Hz, ohm
0,3
0,2
The minimum value in band from 40 Hz to 15 kHz at frequency, Hz
600,5
293,4
The minimum value in band from 40 Hz to 15 kHz, ohm
0,3
0,2
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
0,3
0,2

Crosstalk of Violectric HPA V281 Unbalance as AMP mode


Graphics setting view
Range, dB:
Channel:
Load, ohm:




Table of measured characteristics

Frequency response of Violectric HPA V281 Unbalance with loaded resistors as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier headphone amplifier Violectric HPA V281 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 Violectric HPA V281 Unbalance loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of the headphone amplifier Violectric HPA V281 Unbalance
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
0,05

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


Deviation of frequency response of Violectric HPA V281 Unbalance loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier Violectric HPA V281 Unbalance
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
0,03

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


Frequency response of Violectric HPA V281 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 Violectric HPA V281 Unbalance
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
0,15

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


Deviation of frequency response of Violectric HPA V281 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 Violectric HPA V281 Unbalance
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
0,11

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




Maximum voltage output level vs load of Violectric HPA V281 Unbalance as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum voltage output level vs load Violectric HPA V281 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
3,09
9,81
3,09
9,81
3,09
9,81
3,09
9,81
loaded 25 ohm
5,32
14,52
5,32
14,52
5,32
14,52
5,32
14,52
loaded 31 ohm
6,12
15,73
6,12
15,73
6,12
15,73
6,12
15,73
loaded 62 ohm
12,26
21,77
12,26
21,77
12,26
21,77
12,26
21,77
loaded 100 ohm
14,50
23,23
14,50
23,23
14,50
23,23
14,50
23,23
loaded 199 ohm
14,38
23,15
16,13
24,15
16,13
24,15
16,13
24,15
loaded 300 ohm
15,16
23,62
17,01
24,62
17,01
24,62
17,01
24,62
loaded 763 ohm
16,03
24,10
17,99
25,10
17,99
25,10
17,99
25,10
Not loaded
16,71
24,46
16,71
24,46
16,71
24,46
16,71
24,46





The maximum level of voltage from the musical power of Violectric HPA V281 Unbalance as AMP mode




Brief information


Table of measured characteristics
Recommended impedances for headphones for Violectric HPA V281 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
Violectric HPA V281 Unbalance
Output Impedance
0.24 ohm
Power characteristics of the
Voltage
Current
Equivalent class A
16.71 VRMS
24.46 dBV
202.30 mA
46.12 dB(mA)
Equivalent class AB
16.71 VRMS
24.46 dBV
202.30 mA
46.12 dB(mA)
Equivalent class B
16.71 VRMS
24.46 dBV
202.30 mA
46.12 dB(mA)
Maximum mode
16.71 VRMS
24.46 dBV
202.30 mA
46.12 dB(mA)

Maximum current level output vs load of Violectric HPA V281 Unbalance as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum current level output vs load Violectric HPA V281 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
195,83
45,84
195,83
45,84
195,83
45,84
195,83
45,84
loaded 25 ohm
217,12
46,73
217,12
46,73
217,12
46,73
217,12
46,73
loaded 31 ohm
200,51
46,04
200,51
46,04
200,51
46,04
200,51
46,04
loaded 62 ohm
196,48
45,87
196,48
45,87
196,48
45,87
196,48
45,87
loaded 100 ohm
144,98
43,23
144,98
43,23
144,98
43,23
144,98
43,23
loaded 199 ohm
72,28
37,18
81,10
38,18
81,10
38,18
81,10
38,18
loaded 300 ohm
50,54
34,07
56,71
35,07
56,71
35,07
56,71
35,07
loaded 763 ohm
21,01
26,45
23,57
27,45
23,57
27,45
23,57
27,45
Not loaded
0,33
-9,52
0,33
-9,52
0,33
-9,52
0,33
-9,52



Maximum power level output level vs load of Violectric HPA V281 Unbalance as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum power level output level vs load Violectric HPA V281 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
605,93
27,82
605,93
27,82
605,93
27,82
605,93
27,82
loaded 25 ohm
1154,96
30,63
1154,96
30,63
1154,96
30,63
1154,96
30,63
loaded 31 ohm
1226,21
30,89
1226,21
30,89
1226,21
30,89
1226,21
30,89
loaded 62 ohm
2409,01
33,82
2409,01
33,82
2409,01
33,82
2409,01
33,82
loaded 100 ohm
2101,78
33,23
2101,78
33,23
2101,78
33,23
2101,78
33,23
loaded 199 ohm
1039,17
30,17
1308,35
31,17
1308,35
31,17
1308,35
31,17
loaded 300 ohm
766,36
28,84
964,85
29,84
964,85
29,84
964,85
29,84
loaded 763 ohm
336,74
25,27
423,97
26,27
423,97
26,27
423,97
26,27
Not loaded
5,59
7,47
5,59
7,47
5,59
7,47
5,59
7,47





THD vs load vs output voltage of Violectric HPA V281 Unbalance as AMP mode


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




Table of measured characteristics

Spectrum of Total Harmonic Distortion vs Level of Violectric HPA V281 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 Violectric HPA V281 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 Violectric HPA V281 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 Violectric HPA V281 Unbalance as AMP mode

Not loaded


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

Loaded 15,8 ohm


Graphics setting view
Channel:
Level, dBV/dBm:
Type test:

Loaded 24,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:
Type test:

Loaded 30,5 ohm


Graphics setting view
Channel:
Level, dBV/dBm:
Type test:

Loaded 62,4 ohm


Graphics setting view
Channel:
Level, dBV/dBm:
Type test:

Loaded 100 ohm


Graphics setting view
Channel:
Level, dBV/dBm:
Type test:

Loaded 198,9 ohm


Graphics setting view
Channel:
Level, dBV/dBm:
Type test:

Loaded 300 ohm


Graphics setting view
Channel:
Level, dBV/dBm:
Type test:

Loaded 763 ohm


Graphics setting view
Channel:
Level, dBV/dBm:
Type test:



Spectrum of Noise Distortion vs Level vs Load of Violectric HPA V281 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 Violectric HPA V281 Unbalance

The automatic selection of the optimal AMP models from Violectric HPA V281 Unbalance.
from the measured power parameters of the amplifying part and the measured parameters of the headphones for different purpose of use.


Close

Measurements of Violectric HPA V281 Unbalance were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Violectric HPA V281 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




Violectric HPA V281 is available in reports and services. You are in a professional report.



Information for entry level users

reports for a newbie (Headphone amplifier)





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