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Portable Headphone Amplifier
PHA-3
Charging the battery via an AC outlet
The battery can be charged via an AC outlet by using the recommended USB AC adaptor (AC-UD20) (sold separately).
For details on the adaptor, refer to its operation manual.
1. Rotate the power/volume knob counterclockwise until it clicks to turn off the headphone amplifier.
The battery charges only when the headphone amplifier is off. Rotate the power/volume knob clockwise to turn on
the headphone amplifier. Rotate it more to adjust the volume.
2. Connect the DC IN 5V port of the headphone amplifier and the USB AC adaptor (AC-UD20) (sold separately) using
the micro-USB cable (supplied), then connect the USB AC adaptor to an AC outlet.
The POWER/CHG indicator lights up in red while the battery is being charged, and the indicator turns off when
charging is completed.
Charging is completed in about 6 hours.*
If the battery is not charged properly, the POWER/CHG indicator will flash in red.
*
Time required for empty battery to recharge.
Help Guide
How to Use
51
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