Power source
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Charging the battery via a computer
Connect the headphone amplifier to a computer using the micro-USB cable (supplied) to charge the battery.
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Charging the battery via an AC outlet
The battery can be charged via an AC outlet by using the recommended USB AC adaptor (AC-UD10) (sold separately).
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Turning the power on
How to turn the headphone amplifier on.
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Turning the power off
How to turn the headphone amplifier off.
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Checking the battery level
You can check the battery level with the POWER/CHG indicator.