Measurement's report Musatoff HA-4 test and graphs - Reference Audio Analyzer
Musatoff HA-4



Reports / Musatoff / HA-4 / Amplifier path / report for a pro

Test report Musatoff HA-4 (report for a pro)






Test report - general data of Musatoff HA-4 as AMP mode

Frequency response, Impedance and Frequency response with standard headphones


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Range, dB:

The maximum level of voltage from the musical power

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General results
General results
Musatoff HA-4
Channel
Center/Summary
Average variation in FR in the band 40 Hz to 15 kHz, dB
-0,05, 0,01
Average value of impedance band in 40 Hz to 15 kHz, ohm
0,0
Max voltage output
VRMS
dBV
Clear or equal class AF.A.Q.
5,47
14,75
Optimal or equal class ABF.A.Q.
5,47
14,75
Hard or equal class BF.A.Q.
5,47
14,75
Max, before clippingF.A.Q.
5,47
14,75
Maximum current output at loaded
ohm
mA
Clear or equal class AF.A.Q.
100,0
37,90
Optimal or equal class ABF.A.Q.
62,4
38,48
Hard or equal class BF.A.Q.
62,4
38,48
Max, before clippingF.A.Q.
62,4
43,18
Max power output
ohm
mW
dBm
Clear or equal class AF.A.Q.
198,9
150,09
21,76
Optimal or equal class ABF.A.Q.
198,9
150,09
21,76
Hard or equal class BF.A.Q.
198,9
150,09
21,76
Max, before clippingF.A.Q.
100,0
180,86
22,57

The table shows a most important technical characteristics of Musatoff HA-4

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



Test conditions



Frequency response of Musatoff HA-4 as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response Musatoff HA-4
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,02, 0,00
-0,02, 0,00

Impedance of Musatoff HA-4 as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Impedance Musatoff HA-4
Channel
Left
Right
Impedance average in band from 40 Hz to 15 kHz, ohm
0,0
0,0
Resistance at 500 Hz, ohm
0,0
0,0
Resistance at 1000 Hz, ohm
0,0
0,0
The minimum value in band from 40 Hz to 15 kHz at frequency, Hz
45,6
45,6
The minimum value in band from 40 Hz to 15 kHz, ohm
0,0
0,0
The maximum value in band from 40 Hz to 15 kHz at frequency, Hz
45,6
45,6
The maximum value in band from 40 Hz to 15 kHz, ohm
0,0
0,0

Crosstalk of Musatoff HA-4 as AMP mode


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




Table of measured characteristics

Frequency response of Musatoff HA-4 with loaded resistors as AMP mode


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Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier headphone amplifier Musatoff HA-4
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 Musatoff HA-4 loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of the headphone amplifier Musatoff HA-4
loaded dynamic headphone type
Channel
Center/Summary
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


Deviation of frequency response of Musatoff HA-4 loaded dynamic headphone type as AMP mode


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of amplifier Musatoff HA-4
loaded dynamic headphone type
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz load the dynamic type, dB
0,00

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


Frequency response of Musatoff HA-4 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 Musatoff HA-4
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
0,07

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


Deviation of frequency response of Musatoff HA-4 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 Musatoff HA-4
loaded type balanced armature
Channel
Center/Summary
Variation in frequency response in band 40 Hz to 15 kHz loaded type balanced armature, dB
0,00

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




Maximum voltage output level vs load of Musatoff HA-4 as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum voltage output level vs load Musatoff HA-4 (the source data for the spectra)
Limit
Clear or equal class AF.A.Q.
Optimal or equal class ABF.A.Q.
Hard or equal class BF.A.Q.
Max, before clippingF.A.Q.
Level
VRMS
dBV
VRMS
dBV
VRMS
dBV
VRMS
dBV
loaded 16 ohm
0,54
-5,40
0,60
-4,39
0,60
-4,39
0,68
-3,39
loaded 25 ohm
0,83
-1,59
0,93
-0,59
0,93
-0,59
1,05
0,41
loaded 31 ohm
1,04
0,31
1,16
1,31
1,16
1,31
1,30
2,31
loaded 62 ohm
2,14
6,61
2,40
7,61
2,40
7,61
2,69
8,61
loaded 100 ohm
3,79
11,57
3,79
11,57
3,79
11,57
4,25
12,57
loaded 199 ohm
5,46
14,75
5,46
14,75
5,46
14,75
5,46
14,75
loaded 300 ohm
5,46
14,75
5,46
14,75
5,46
14,75
5,46
14,75
loaded 763 ohm
5,47
14,75
5,47
14,75
5,47
14,75
5,47
14,75
Not loaded
5,47
14,75
5,47
14,75
5,47
14,75
5,47
14,75





The maximum level of voltage from the musical power of Musatoff HA-4 as AMP mode

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Brief information


Table of measured characteristics
Recommended impedances for headphones for Musatoff HA-4
Recommended impedance for headphones from the range
8 - 1008 Ом для режима работы усилителя
Equivalent class A F.A.Q.
Max, before clippingF.A.Q.
For In-Ear Headphones
8 - 1007 ohm
8 - 1007 ohm
For Over-Ear Headphones
8 - 764 ohm
8 - 764 ohm


Table of measured characteristics
Musatoff HA-4
Output Impedance
0.00 ohm
Power characteristics of the
Voltage
Current
Equivalent class A F.A.Q.
5.46 VRMS
14.75 dBV
34.79 mA
30.83 dB(mA)
Equivalent class AB F.A.Q.
5.46 VRMS
14.75 dBV
38.15 mA
31.63 dB(mA)
Equivalent class B F.A.Q.
5.46 VRMS
14.75 dBV
38.15 mA
31.63 dB(mA)
Maximum mode F.A.Q.
5.46 VRMS
14.75 dBV
42.81 mA
32.63 dB(mA)

Maximum current level output vs load of Musatoff HA-4 as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum current level output vs load Musatoff HA-4 (the source data for the spectra)
Level, mA
Clear or equal class AF.A.Q.
Optimal or equal class ABF.A.Q.
Hard or equal class BF.A.Q.
Max, before clippingF.A.Q.
Level
mA
dB(mA)
mA
dB(mA)
mA
dB(mA)
mA
dB(mA)
loaded 16 ohm
34,01
30,63
38,16
31,63
38,16
31,63
42,82
32,63
loaded 25 ohm
33,97
30,62
38,12
31,62
38,12
31,62
42,78
32,62
loaded 31 ohm
33,96
30,62
38,11
31,62
38,11
31,62
42,76
32,62
loaded 62 ohm
34,30
30,71
38,48
31,71
38,48
31,71
43,18
32,71
loaded 100 ohm
37,90
31,57
37,90
31,57
37,90
31,57
42,53
32,57
loaded 199 ohm
27,47
28,78
27,47
28,78
27,47
28,78
27,47
28,78
loaded 300 ohm
18,22
25,21
18,22
25,21
18,22
25,21
18,22
25,21
loaded 763 ohm
7,16
17,10
7,16
17,10
7,16
17,10
7,16
17,10
Not loaded
0,11
-19,23
0,11
-19,23
0,11
-19,23
0,11
-19,23



Maximum power level output level vs load of Musatoff HA-4 as AMP mode


Graphics setting view
Channel:




Table of measured characteristics
Maximum power level output level vs load Musatoff HA-4 (the source data for the spectra)
Limit
Clear or equal class AF.A.Q.
Optimal or equal class ABF.A.Q.
Hard or equal class BF.A.Q.
Max, before clippingF.A.Q.
Level
mW
dBm
mW
dBm
mW
dBm
mW
dBm
loaded 16 ohm
18,27
12,62
23,01
13,62
23,01
13,62
28,97
14,62
loaded 25 ohm
28,28
14,51
35,60
15,52
35,60
15,52
44,83
16,52
loaded 31 ohm
35,18
15,46
44,29
16,46
44,29
16,46
55,76
17,46
loaded 62 ohm
73,41
18,66
92,42
19,66
92,42
19,66
116,35
20,66
loaded 100 ohm
143,65
21,57
143,65
21,57
143,65
21,57
180,86
22,57
loaded 199 ohm
150,09
21,76
150,09
21,76
150,09
21,76
150,09
21,76
loaded 300 ohm
99,54
19,98
99,54
19,98
99,54
19,98
99,54
19,98
loaded 763 ohm
39,16
15,93
39,16
15,93
39,16
15,93
39,16
15,93
Not loaded
0,60
-2,24
0,60
-2,24
0,60
-2,24
0,60
-2,24





THD vs load vs output voltage of Musatoff HA-4 as AMP mode


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




Table of measured characteristics

Spectrum of Total Harmonic Distortion vs Level of Musatoff HA-4 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 Musatoff HA-4 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 Musatoff HA-4 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 Musatoff HA-4 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 Musatoff HA-4 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 Musatoff HA-4

The automatic selection of the optimal AMP models from Musatoff HA-4 .
from the measured power parameters of the amplifying part and the measured parameters of the headphones for different purpose of use.








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