4
4.1.4 RCA / XLR imitate output
This is the LINE OUT output of the QA390. When the Pre-AMP volume is off, they are the
fixed maximum analog volume output. When the Pre-AMP volume is turned on in the menu,
their output level is controlled by the
Volume knob
.
4.1.5 Type-C port
This port is the charging input port, which supports QC2.0 standard fast charge. It can also
be input with the normal charger or charging treasure input port of 5V 2A. The fast charge is
recommended to be no less than 18W. When this port is input, it only charges and does not
supply power. At this time, the power supply still comes from the battery, and can be used
while charging, but this will seriously affect the battery life in the long run.
4.1.6 DC port
The standard is 5.5mm*2.1mm, the internal positive and negative, the voltage is 5V~13V. It
is recommended to use 9V/12V, not less than 20W high quality power supply. This port is
the external power input port. This port will automatically disconnect the battery when the
power is input. The power supply is convenient for the user to use the QA390 as a long-term
power supply. When the DC CHG of the panel is turned ON, the battery is also charged.
When it is turned OFF, only the power supply is not charged.
Note:
at least one time charging and discharging the battery per month, otherwise, it will
seriously affect the working life of battery.
