d. MCLK MODE（主时钟模式）：
After many years of research and development.X22 archive this unique function. In
order to set the ES9038PRO in the best clock environment--True HI-END performance.
When select AUTO.X22 will enter the adaptive master clock mode. A more accurate
clock will be obtained by a set of high performance PLLs (phase-locked loop), and
it will be transmitted to the ES9038 DAC. The asrc will be turn down. The digital
filter inside ES9038 will no longer produce a weak timing error (jitter), and the
digital signal will be more accurately recovered. When the NORMAL option is
selected, the ASRC is turned on and the clock mode will be fixed at 100M femto-
second clock, as the official design of the ES9038PRO.
* Under the “Auto” mode, the quality of the master clock of DAC-X22A will be more or less performance depended by the quality of
the superior clock. This mode is recommended to be used only for the clock of the front-end audio equipment in good condition.
e. PHASE INVERT：
The amplifier in the RCA output default is positive phase. XLR balanced output for
the American standard polarity output. that is 1,2 hot 3 cold. There are two
options for this function: DISABLE and ENABLE (optional).
f. BRIGHTNESS（屏幕亮度）：
There are 8 levels of brightness to adjust(OLED Display)
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