xDuoo TA-22 Manual page 5

1.LOGO indicator light: the indicator light is red for the first 40 seconds after the
power is turned on, which means the tube is heating, and there is no sound
output at this time; the indicator light is orange after the heating is completed.
2.Screen
3.The tubes,if you want to replace the electronic tube, please turn off and then
unplug it.
4.6.5mm headphone jack
5.4.4mm balanced headphone jack
6.4-pin XLR balanced headphone jack
7.Knob combination：
1) turn right to increase the volume; turn left to reduce the volume.
2) Short press to switch input channels: USB, coaxial, optical, Bluetooth,
BALANCE IN, AUX IN
3) Long press 3 seconds to enter the menu setting interface; after entering
the setting interface, do the following:
①Rotate to select menu function: FILTER, GAIN, PAIRING.
②Short press to enter the next submenu or select the menu function
and exit.
③Long press 3 seconds to return to the main page.
Each menu is explained below：
1) GAIN setting: you can set LOW, MID or HIGH (high)
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