Measurement's report SMSL SH-9 Balanced Out - Reference Audio Analyzer

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SMSL SH-9 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

    Information for all

    Versus of characteristics

    Information for professionals
      reports for a pro (Headphone amplifier)
        Comparison of on-line graphs


        Quick jump to the schedules in this pro report: SH-9 Balanced Out
          Spectra vs Amplitude

          SMSL SH-9

          Balanced Out
          About this report
          This is a report for professionals with a suite of test of headphone amplifier.
          You can see a simple report for "dummies" with explanations of the main characteristics for SMSL SH-9 Balanced Out

          A suite of tests for a headphone amplifier can be applied to just a universal output without a formal presence of an amplifier, if in this mode you can connect headphones to this output. Based on the results of the tests, you can understand the real picture, is the output powerful enough or not, with the initial data on the circuitry as a "black box".

          Line-out, differences from the output for headphones and speakers

          Advantages and disadvantages of balanced amplifiers

          Test report - general data SMSL SH-9 (as headphone amplifier)

          Frequency response, Impedance and Frequency response with standard headphones

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          Voltage levels from the load at the output of the amplifier

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          Average value of impedance band in 40 Hz - 15 kHz0.1ohm
          Voltage:
          Linear Mode / Maximum or before clipping level           		16.5/16.5dBV
          6.7/6.7VRMS
          Current:
          Linear Mode / Maximum or before clipping level          		52.4/52.4dB(mA)
          419.2/419.2mA





          Brief information

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          Frequency response SMSL SH-9 Balanced Out (as headphone amplifier)

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          Channel:LeftRight
          Variation in frequency response in band from 40 Hz - 15 kHz -0.1, +0.0-0.1, +0.0dB



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          Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

          On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response



          Impedance SMSL SH-9 Balanced Out (as headphone amplifier)

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          Channel:LeftRight
          Impedance average in band from 40 Hz - 15 kHz0.2 0.0ohm
          The minimum value in band from 40 Hz - 15 kHz0.2 0.0ohm
          The maximum value in band from 40 Hz - 15 kHz0.3 0.0ohm


          Comparison of basic characteristics AMPs


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          Crosstalk SMSL SH-9 Balanced Out (as headphone amplifier)

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          Load

          Channel:LeftRight
          Crosstalk @ 1 kHz @ 15.8 ohm -97.2 -95.4dB
          Crosstalk @ 1 kHz @ 24.5 ohm -100.8 -97.9dB
          Crosstalk @ 1 kHz @ 30.5 ohm -98.4 -101.8dB
          Crosstalk @ 1 kHz @ 62.4 ohm -97.6 -102.2dB
          Crosstalk @ 1 kHz @ 100.0 ohm -102.2 -106.5dB
          Crosstalk @ 1 kHz @ 198.9 ohm -99.6 -104.9dB
          Crosstalk @ 1 kHz @ 300.0 ohm -101.0 -102.5dB
          Crosstalk @ 1 kHz @ 763.0 ohm -105.6 -102.2dB
          Crosstalk @ 1 kHz @ Not loaded-104.4 -102.7dB



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          Crosstalk Phase SMSL SH-9 Balanced Out (as headphone amplifier)

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          Load




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          Frequency response SMSL SH-9 Balanced Out with resistive load

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          Frequency response of amplifier with resistive load @ 40 Hz - 15 kHz
          Channel:LeftRight
          TEST 16 ? + SMSL SH-9 Balanced Out 0.10.0dB
          TEST 32 ? + SMSL SH-9 Balanced Out 0.00.0dB
          TEST 64 ? + SMSL SH-9 Balanced Out 0.00.0dB
          TEST 126 ? + SMSL SH-9 Balanced Out 0.00.0dB
          TEST 256 ? + SMSL SH-9 Balanced Out 0.00.0dB
          TEST 512 ? + SMSL SH-9 Balanced Out 0.00.0dB



          Brief information

          Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

          On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response



          Frequency response SMSL SH-9 Balanced Out loaded dynamic headphone type

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          Frequency response of amplifier loaded dynamic headphone type @ 40 Hz - 15 kHz
          Channel:LeftRight
          TEST 10000 ? + SMSL SH-9 Balanced Out 0.00.0dB
          Grado GH4 Limited Edition + SMSL SH-9 Balanced Out 0.10.0dB



          Brief information

          Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

          On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response



          Frequency response SMSL SH-9 Balanced Out loaded type balance armature headphone type

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          Frequency response of amplifier loaded type balance armature headphone type @ 40 Hz - 15 kHz
          Channel:LeftRight
          TEST 10000 ? + SMSL SH-9 Balanced Out 0.00.0dB
          Campfire Audio Andromeda + SMSL SH-9 Balanced Out 0.30.1dB
          Fearless Audio S8F Freedom + SMSL SH-9 Balanced Out 0.30.1dB



          Brief information

          Clicking on the graph will take you to the comparison page of different models with advanced graph display settings.

          On the frequency response comparison page, there is an export option and additional tools for adjusting the frequency response



          THD vs load vs output voltage SMSL SH-9 Balanced Out

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          Channel

          Load

          Harmonic, number

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          Load

          Harmonic, number

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          Load


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          Maximum voltage output level vs load SMSL SH-9 Balanced Out

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          RAW coordinates

          Power characteristics of the Voltage Current
          dBVVRMSdB(mA)mA
          Equivalent class A 16.56.752.4419.2
          Equivalent class AB 16.56.752.4419.2
          Equivalent class B 16.56.752.4419.2
          Maximum mode 16.56.752.4419.2


          Volume Control TypeAnalog
          Optimal range of volume control56.0dB


          Comparison SMSL SH-9 Balanced Out and another amplifiers by loudness (Volume Level)

          Main characteristics of the SMSL SH-9 Balanced Out


          Brief information

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          Maximum voltage output level vs load SMSL SH-9 Balanced Out

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          Maximum Amplifier Voltage Level
          Load Pure or equal class AOptimal or equal class ABHard or equal class BMax, before clipping
          dBVVRMSdBVVRMSdBVVRMSdBVVRMS
          15.8 ohm 16.46.616.46.616.46.616.46.6
          24.5 ohm 16.56.716.56.716.56.716.56.7
          30.5 ohm 16.56.716.56.716.56.716.56.7
          62.4 ohm 16.56.716.56.716.56.716.56.7
          100 ohm 16.56.716.56.716.56.716.56.7
          198.9 ohm 16.56.716.56.716.56.716.56.7
          300 ohm 16.56.716.56.716.56.716.56.7
          763 ohm 16.56.716.56.716.56.716.56.7
          Not loaded16.56.716.56.716.56.716.56.7



          Maximum level of amplifier current
          Load Pure or equal class AOptimal or equal class ABHard or equal class BMax, before clipping
          dB(mA)mAdB(mA)mAdB(mA)mAdB(mA)mA
          15.8 ohm 52.4419.252.4419.252.4419.252.4419.2
          24.5 ohm 48.7272.348.7272.348.7272.348.7272.3
          30.5 ohm 46.8219.046.8219.046.8219.046.8219.0
          62.4 ohm 40.6107.440.6107.440.6107.440.6107.4
          100 ohm 36.567.136.567.136.567.136.567.1
          198.9 ohm 30.633.730.633.730.633.730.633.7
          300 ohm 27.022.427.022.427.022.427.022.4
          763 ohm 18.98.818.98.818.98.818.98.8


          Power
          Load Pure or equal class AOptimal or equal class ABHard or equal class BMax, before clipping
          dBmmWdBmmWdBmmWdBmmW
          15.8 ohm 34.42777.034.42777.034.42777.034.42777.0
          24.5 ohm 32.61816.332.61816.332.61816.332.61816.3
          30.5 ohm 31.71463.331.71463.331.71463.331.71463.3
          62.4 ohm 28.6719.128.6719.128.6719.128.6719.1
          100 ohm 26.5449.826.5449.826.5449.826.5449.8
          198.9 ohm 23.6226.523.6226.523.6226.523.6226.5
          300 ohm 21.8150.321.8150.321.8150.321.8150.3
          763 ohm 17.759.117.759.117.759.117.759.1



          Brief information

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          Spectrum of Total Harmonic Distortion vs Level SMSL SH-9 Balanced Out (as headphone amplifier)

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          Level

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          Level

          Range

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          dBm

          Range

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          dBV

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          Spectrum of Multitone Distortion vs Level vs Load SMSL SH-9 Balanced Out (as headphone amplifier)

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          dBm

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          Spectrum of IMD SMPTE vs Level SMSL SH-9 Balanced Out (as headphone amplifier)

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          Level

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          Range

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          dBm

          Range

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          Spectrum of IMD CCIF vs Level SMSL SH-9 Balanced Out (as headphone amplifier)

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          Level

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          dBm

          Range

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          Brief information

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          More detailed

          Measurements of SMSL SH-9 Balanced Out were carried out by Roman Kuznetsov on the hardware-software complex RAA.

          The SMSL SH-9 Balanced Out 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.




          SMSL SH-9 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

            Information for all

            Versus of characteristics

            Information for professionals
              reports for a pro (Headphone amplifier)
                Comparison of on-line graphs




                Quick jump to the schedule in this report: Balanced Out






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

                You can help with translation via the: facebook and feedback.




                Comments

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                PTGDAEMON
                Изображения, медиа и смайлы доступны в исходном чате.
                2022-11-25 15:39:01

                Комментарий к профессиональному отчету SMSL SH-9 Balanced Out
                Приветствую, Роман. Тут скоро выходят новые планары Moondrop Venus - довольно тугие на раскачку. Пользуясь вашим инструментом "Напряжение и чувствительность - Прямое сравнение графиков", выставил для балансного выхода SH-9 характеристики Venus: 100 дБ/В, 18 Ом. Кастомная точка появилась буквально на верхней границе графика усилителя (при давлении 107 дБ и пик-факторе 9 дБ): 6,3 Vrms при максимальном уровне 6,6-6,7 Vrms.

                И вот, соответственно, возникает вопрос. Усилитель потянет эти наушники не только по громкости, но и по контролю?
                Reply


                romanrex
                Изображения, медиа и смайлы доступны в исходном чате.
                2022-11-27 12:35:55

                Комментарий к профессиональному отчету SMSL SH-9 Balanced Out

                PTGDAEMON 2022-11-25 15:39:01
                Комментарий к профессиональному отчету SMSL SH-9 Balanced Out
                Приветствую, Роман. Тут скоро выходят новые планары Moondrop Venus - довольно тугие на раскачку. Пользуясь вашим инструментом "Напряжение и чувствительность - Прямое сравнение графиков", выставил для балансного выхода SH-9 характеристики Venus: 100 дБ/В, 18 Ом. Кастомная точка появилась буквально на верхней границе графика усилителя (при давлении 107 дБ и пик-факторе 9 дБ): 6,3 Vrms при максимальном уровне 6,6-6,7 Vrms.

                И вот, соответственно, возникает вопрос. Усилитель потянет эти наушники не только по громкости, но и по контролю?



                Для частного случая 107 дБ SPL при пик-факторе 9 дБ - по громкости - да. Для своего случая желательно выяснить свою громкость https://reference-audio-analyzer.pro/faq-ref-spl.php

                Что касается контроля, то это широко толкуемое определение, где у одних это напрямую зависит от кривой АЧХ, у других от изменения АЧХ, у третьих от гармонических искажений, у других просто от того, нравится звук или нет. К сожалению, тут нет единой конкретики.

                Соответственно можно рассмотреть лишь часть характеристик, которые прямо или косвенно могут быть связаны с представлением контроля.

                Практически у всех планаров кривая сопротивления ровная (исключение - некоторые модели наушников Audeze, где есть электрическая цепь с доп. фильтром) и соответственно нет прямой взаимосвязи между контролем и демпинг-фактором, как у динамических наушников с выраженным резонансом в области низких частот. Где этот резонанс делает подъем низких частот (меняет АЧХ) и эти частоты за счет своего доминирования делают менее слышимыми другие частоты. Дополнительно этот резонанс должен как бы или размазывать по времени этот частотный диапазон, или вносить дополнительную задержку. Это пока не слишком хорошо изучено.

                У планаров формально этой проблемы нет, но есть мнения, что какие-то усилители их лучше контролируют, и тут прямой взаимосвязи с демпинг-фактором нет.

                Если эту тему развивать, то можно попробовать учесть заявления, что во время пиков у дорожек на мембране сильно повышается температура. Это в свою очередь отражается на сопротивлении дорожки, что ведет к повышенному потреблению тока и увеличению чувствительности наушников. И мы получаем уже не прямую передаточную характеристику, которая в свою очередь даст уже определенные нелинейные искажения.

                Тут можно попробовать смоделировать уровень дрейфа чувствительности наушников и конечного дрейфа звукового давления в зависимости от выходного сопротивления усилителя. И возможно меньший дрейф будет в связках с высоким выходным сопротивлением и это будет укладываться в теорию меньших искажений С.Агеева (Должен ли УМЗЧ иметь малое выходное сопротивление)

                Сейчас я готовлю цикл материалов про нелинейные искажения от различных передаточных характеристик, где будет и практическая часть в виде инструкции, как те или иные искажения послушать напрямую из foobar2000. И там в целом можно будет настроить и послушать и эти искажения.


                Второй вариант - это искажения от усилителя, где с повышением громкости звуковая волна “поджимается”, растут общие искажения и соответственно звук как бы смягчается. Здесь по графику видно, что усилитель работает в своем чистом линейном режиме до резкого ограничения тока и соответственно такой контроль не теряет до тех пор, пока не уйдет в клиппирование.
                Reply


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