song, switch to USB DAC mode, switch to Bluetooth mode, no function,
etc.
Power-off timer
There are two types of the timer, Sleep and Idle poweroff.
Sleep
The device will automatically shut down when the time reaches the set
value. It can be set to any integer value between 0 and 120 minutes.
(Note that if it is turned OFF, the sleep shutdown function will be
disabled.)
Idle poweroff
If the device is not working without any operation, it will automatically
turn off once the timer reaches the set value. It can be set to any