AC 70P shuts down after powering on

Recently bought AC70P and noticed right out the box that station powering of itself automatically if Bluetooth is not connected & AC/DC are off.
It powers off within 1 minute and this is not just screen. In case Bluetooth is connected or AC/DC are on it is fine. is that normal behaviour? (Eco is off).

@denpr yes, it’s normal behaviour. Unit will power down if no outputs are turned on. You can adjust screen display sleep time in the app if need be.