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manual: Document the DAC power mode setting

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Make a note of the fact that the M3K DAC's high performance
setting is not necessarily the highest quality setting --
see forum post
https://forums.rockbox.org/index.php/topic,52917.msg249741.html#msg249741

Change-Id: If0196d2a224868aae10d61f66bac2e8c6843263f
This commit is contained in:
Aidan MacDonald 2022-01-11 13:27:33 +00:00
parent d93e054419
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21
manual/configure_rockbox/sound_settings.tex
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@ -184,6 +184,27 @@ change to customise your listening experience.
the effect of widening the stereo field. A value of 100\% will leave the
stereo field unaltered.
\opt{dac_power_mode}{
\opt{fiiom3k}{
\section{DAC Power Mode}
The power mode setting lets you choose between the high performance and
battery-saving modes of the DAC. Although battery saver mode is intended
to maximize your battery life, potentially at the expense of quality, in
some cases it may produce better quality audio than high performance mode.
If you want to get the best audio quality, you should experiment with both
settings to see which one is actually better.
}
\opt{shanlingq1}{
\section{DAC Output Level}
The output level setting selects between the DAC's high and low gain modes.
High gain consumes more power, but allows for increased volume and allows
the DAC to drive higher impedance headphones.
High gain corresponds to a 2.0V RMS (root-mean-square) output level, and
low gain to a 1.0V RMS level.
}
}
\opt{depth_3d}{
\section{3D Enhancement}
3D Enhancement increases the perceived separation between the left and right