Reference Audio Analyzer

xDuoo TA-02 is available in reports and services. You are on the headphone sensitivity and amplifier output voltage comparison page.





Voltage and Sensitivity: xDuoo TA-02

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General Graph Display Options
Show title of devices:

Location of names:

Parameters for displaying the graphics of the amplifier/s

Graph Display Type:

RAW coordinates:

Graph Display Options of Headphones

Selected headphones

Location of names:

Display the info of main device (No select) :





Other parameter
Peak factor in the unevenness of the music volume:
dB
Desired SPL sound pressure level when listening to music:
dB SPL




Parameters of the axis of the graph
Loaded impedance headphones:
- ohm

Range of Voltage:
- dBV
Display impedance value in dB(ohm) :





Link to this page with the selected parameters




Graph display options (display, color, menu, delete) and the main characteristics of the selected devices

Selected amplifiers, characteristics (for plotting graphics). Class: Pure or equal class A / Maximum or before clipping level

Menu Delete Close Color Name Voltage, dBV/VRMS Current, dB(mA)/mA Output Impedance, ohm
xDuoo TA-02 9.87 / 3.12
18.35 / 8.27
22.13 / 12.77
39.54 / 94.81
13.01
Pure or equal class A 9.87 / 3.12 22.13 / 12.77 13.01
Optimal or equal class AB 18.35 / 8.27 27.95 / 24.98 13.01
Hard or equal class B 18.35 / 8.27 33.58 / 47.77 13.01
Maximum or before clipping level 18.35 / 8.27 39.54 / 94.81 13.01

Graph display options (display, color, menu, delete) and the main characteristics of the selected headphones

Menu Delete Close Color Close Sensitivity of voltage , dB/V SPL Impedance , ohm
AKG K 712 96.4 68.5
Audeze LCD-3 Fazor 105.4 111.2
Kennerton Thror ECL-01 109.7 43.0
Monster Elements Wireless Over-Ear Analog wire 123.4 18.2
Sennheiser HD 800s 105.2 442.8
Sony MDR-MA 900 112.7 15.8




Display headphones at specified limits

Voltage, dBV Current, dB(mA) Output Impedance, ohm
Нижняя граница
Lower limit




How to change the color of graphs?





Amplifiers and Headphones by parameters

Custom AMP

Delete Close Color Name Voltage, dBV Current, dB(mA) Output Impedance, ohm





Headphones

Delete Close Color Name Sensitivity of voltage , dB/V SPL Impedance , ohm





Graph of Sensitivity

Delete Close Color Name Sensitivity Type







How to change the color of graphs?



Maximum level of the load
Loaded impedance headphones ohm

Marker:
Equivalent power class Equiv. class A Equiv. class AB Equiv. class B Max No Current limit
dBV dBV dBV dBV dBV
xDuoo TA-02 -7.8 -1.9 3.7 9.6 15.4



About maximum voltage levels of the load

To compare the amplifiers for loudness from the impedance, set the required impedance value.

Why is the "volume" expressed in dBV

When you compare amplifiers by loudness, the voltage value, expressed in dBV, should be used. The difference in voltage will show the difference in decibel (dB) between the amplifiers.

The power values in regular mW do not convenient to direct comparison.

The direct comparison by power is only suitable for speaker amplifiers operating with an ultra-low-ohm load. This does not apply to headphone amplifiers where the headphone resistance is higher than 8-16 ohms.

Because of the higher resistance of the headphones, when compare the volume of a musical signal it is necessary to simultaneously take into account the current and voltage limits. The speaker amplifier have limit by current. For the exact difference between the amplifiers in decibel, the power value must be converted into voltage in units of dBV, taking into account the margin by current for the music signal for every AMP.




Рекомендации совместимости наушников c усилителями на основе технических характеристик

AKG K 712 + xDuoo TA-02

With the measured characteristics of the AKG K 712, the sensitivity of 96.4 dB/VRMS and the impedance of 68.5 ohms, with the xDuoo TA-02 the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will not be provided. This requires an amplifier with a voltage of 2.6 dBV and a current of 25.8 dB(mA).

xDuoo TA-02 can provide voltages up to 8.4 dBV and up to a current of 22.1 dB(mA). Due to the current limit, the maximum voltage with a headphone impedance of 68.5 Ohm in pure mode will be -1.2 dBV.

xDuoo TA-02 with K 712 will provide the best sound quality in the volume range from 68.3 to 86.3 dB SPL. Thus, relative the level of 90dB SPL there is no any margin by the volume up. In the lower quality mode, the xDuoo TA-02 provides up to 103.7 dB SPL, which gives a margin of 13.7 dB.

Audeze LCD-3 Fazor + xDuoo TA-02

With the measured characteristics of the Audeze LCD-3 Fazor, the sensitivity of 105.4 dB/VRMS and the impedance of 111.2 ohms, with the xDuoo TA-02 the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will be provided. This requires an amplifier with a voltage of -6.4 dBV and a current of 12.7 dB(mA).

xDuoo TA-02 can provide voltages up to 8.9 dBV and up to a current of 22.1 dB(mA). Due to the current limit, the maximum voltage with a headphone impedance of 111.2 Ohm in pure mode will be 3.0 dBV.

xDuoo TA-02 with LCD-3 Fazor will provide the best sound quality in the volume range from 77.8 to 99.4 dB SPL. Thus, relative the level of 90 dB SPL there is a margin of 9.4 dB above by the volume and 12.2 dB below.

Kennerton Thror ECL-01 + xDuoo TA-02

With the measured characteristics of the Kennerton Thror ECL-01, the sensitivity of 109.7 dB/VRMS and the impedance of 43.0 ohms, with the xDuoo TA-02 the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will be provided. This requires an amplifier with a voltage of -10.7 dBV and a current of 16.6 dB(mA).

xDuoo TA-02 can provide voltages up to 7.6 dBV and up to a current of 22.1 dB(mA). Due to the current limit, the maximum voltage with a headphone impedance of 43.0 Ohm in pure mode will be -5.2 dBV.

xDuoo TA-02 with Thror will provide the best sound quality in the volume range from 80.8 to 95.5 dB SPL. Thus, relative the level of 90 dB SPL there is a margin of 5.5 dB above by the volume and 9.2 dB below.

Monster Elements Wireless Over-Ear Analog wire + xDuoo TA-02

With the measured characteristics of the Monster Elements Wireless Over-Ear Analog wire, the sensitivity of 123.4 dB/VRMS and the impedance of 18.2 ohms, with the xDuoo TA-02 the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will be provided. This requires an amplifier with a voltage of -24.4 dBV and a current of 10.4 dB(mA).

xDuoo TA-02 can provide voltages up to 5.2 dBV and up to a current of 22.1 dB(mA). Due to the current limit, the maximum voltage with a headphone impedance of 18.2 Ohm in pure mode will be -12.7 dBV.

xDuoo TA-02 with Elements Wireless Over-Ear will provide the best sound quality in the volume range from 92.1 to 101.8 dB SPL.

Sennheiser HD 800s + xDuoo TA-02

With the measured characteristics of the Sennheiser HD 800s, the sensitivity of 105.2 dB/VRMS and the impedance of 442.8 ohms, with the xDuoo TA-02 the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will be provided. This requires an amplifier with a voltage of -6.2 dBV and a current of 0.9 dB(mA).

xDuoo TA-02 can provide voltages up to 9.6 dBV and up to a current of 22.1 dB(mA).

xDuoo TA-02 with HD 800s will provide the best sound quality in the volume range from 78.3 to 105.8 dB SPL. Thus, relative the level of 90 dB SPL there is a margin of 15.8 dB above by the volume and 11.7 dB below.

Sony MDR-MA 900 + xDuoo TA-02

With the measured characteristics of the Sony MDR-MA 900, the sensitivity of 112.7 dB/VRMS and the impedance of 15.8 ohms, with the xDuoo TA-02 the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will not be provided. This requires an amplifier with a voltage of -13.7 dBV and a current of 22.4 dB(mA).

xDuoo TA-02 can provide voltages up to 4.7 dBV and up to a current of 22.1 dB(mA). Due to the current limit, the maximum voltage with a headphone impedance of 15.8 Ohm in pure mode will be -13.9 dBV.

xDuoo TA-02 with MDR-MA 900 will provide the best sound quality in the volume range from 80.8 to 89.8 dB SPL. Thus, relative the level of 90dB SPL there is no any margin by the volume up. In the lower quality mode, the xDuoo TA-02 provides up to 107.2 dB SPL, which gives a margin of 17.2 dB.


О рекомендациях


Рекомендации составлены для среднего уровня громкости при прослушивании музыки в 90 дБ SPL c учетом неравномерности громкости по музыкальному треку в виде пик-фактора в 9 дБ. Если Вам нужен анализ для другого звукового давления, или для определенной музыки с иным пик-фактором, задайте в настройках альтернативные значения для "Desired SPL sound pressure level when listening to music" и "Peak factor in the unevenness of the music volume". По умолчанию параметры не учитывают окружающую обстановку или шумоизоляцию наушников, предполагая, что прослушивание производится днем качественной не перекомпрессированной музыки. При анализе прослушивания музыки ночью в спокойной обстановке, стоит уменьшить звуковое давление на 12-15 дБ.

Выше на графике показаны зоны напряжения от нагрузки. Для наушников высчитывается необходимое напряжение, которое должно быть на выходе усилителя и оценивается с тем напряжением, которое может усилитель выдать. Если усилитель способен выдать большее напряжение, то высчитывается дополнительный запас по прибавке громкости или указывается, насколько громкости может не хватить. Аналогично считается и запас по регулировке громкости вниз. В большинстве случаев, при снижении громкости снижается и параметр сигнал/шум, из-за чего становится слышимым фоновый шум. При использовании аналоговых регуляторов в минимальных положениях часто наблюдается дисбаланс каналов. Диапазон регулировки громкости установлен как дБ. Если Вам известно, что устройство обладает более высокими соотношением сигнал-шум, или использует качественную реализацию регулировки громкости через реле, то увеличьте в настройках параметр "Optimal range of volume control".


Рекомендации описывают график. На графике по горизонтали отображена ось сопротивлений подключаемых наушников. По вертикали ось напряжения на выходе усилителя в единицах dBV. Точками на графике отображается необходимое напряжение для наушников для заданного звукового давления. В самом лучшем случае точка должна быть в середине по вертикали голубой зоны.

Голубая зона является наиболее качественным режимом усилителя.





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xDuoo TA-02 is available in reports and services. You are on the headphone sensitivity and amplifier output voltage comparison page.






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Comments

Commentary view:





exmash
2019-02-18 00:10:02

Комментарий к сервису Voltage and Sensitivity : Beyerdynamic DT 880 Pro Default
Привильно ли понимаю, что для HD650 этого плеера хватит, а для DT880 нет?
Reply


romanrex
2019-02-18 00:56:26

Комментарий к сервису Voltage and Sensitivity : Beyerdynamic DT 880 Pro Default

exmash 2019-02-18 00:10:02
Комментарий к сервису Voltage and Sensitivity : Beyerdynamic DT 880 Pro Default
Привильно ли понимаю, что для HD650 этого плеера хватит, а для DT880 нет?


График показывает, что для общего случая C4 Pro хватит для HD650 без запаса по громкости, а для DT 880 Pro желателен источник на 2.5 дБ громче.

Но для своего случая надо выбрать знакомые наушники со знакомым источником и выяснить, какая для себя громкость является оптимальной или достаточной. И эту громкость уже сопоставить с HD650/DT 880 Pro и C4 Pro.
Reply