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Musatoff HA-4 is available in reports and services. You are in a professional report.

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Information for professionals
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Quick jump to the schedules in this pro report: HA-4
    Spectra vs Amplitude



    Musatoff HA-4 is available in reports and services. You are in a professional report.

    Information for entry level users
    Information for all

    Versus of characteristics
    Information for professionals

    Comparison of on-line graphs


    Quick jump to the schedule in this report:

    Reports / Musatoff / HA-4 / A set of device tests as a headphone amplifier - report for a pro

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

    


    Available
    to listen to
    in the RAA showroom


    Test report - general data of Musatoff HA-4 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
    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
    Pure or equal class A
    5,47
    14,75
    Optimal or equal class AB
    5,47
    14,75
    Hard or equal class B
    5,47
    14,75
    Max, before clipping
    5,47
    14,75
    Maximum current output at loaded
    ohm
    mA
    Pure or equal class A
    100,0
    37,90
    Optimal or equal class AB
    62,4
    38,48
    Hard or equal class B
    62,4
    38,48
    Max, before clipping
    62,4
    43,18
    Max power output
    ohm
    mW
    dBm
    Pure or equal class A
    198,9
    150,09
    21,76
    Optimal or equal class AB
    198,9
    150,09
    21,76
    Hard or equal class B
    198,9
    150,09
    21,76
    Max, before clipping
    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


    Graphics setting view
    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
    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
    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




    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
    Max, before clipping
    For In-Ear Headphones
    8 - 1007 ohm
    8 - 1007 ohm
    For Over-Ear Headphones
    32 - 607 ohm
    21 - 607 ohm


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

    Comparison of basic characteristics: Voltage, Current and Impedance

    Compare a changed frequency response the bundles of HA-4 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 Musatoff HA-4 were carried out by Roman Kuznetsov on the hardware-software complex RAA.

    The Musatoff HA-4 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.


    HA-4 was given for tests by Musatoff






    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.



    Musatoff HA-4 is available in reports and services. You are in a professional report.

    Information for entry level users
    Information for all

    Versus of characteristics
    Information for professionals

    Comparison of on-line graphs



    Quick jump to the schedule in this report:


    ⊗ Kennerton
    ⊗ PRO account
    ⊗ Sertification

    Original text in Russian page. Translation page is not yet ready

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