Balance: adjust the speaker sound output balance, adjust the range of 0-100.
Auto Volume: Turn on / off the automatic volume control, when the volume exceeds
the set value, will automatically reduce the volume amplitude, protect the amplifier.
AD Switch: designed for people with visual impairment, you can make up for the lack
of visual impairment through the sound, open the AD volume can also be adjusted.
to speak for the narration, will raise this is the sound of water, open the door, laughter,
and so on.
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