12. Does the Q5 support idle time power off?

A: When the Q5 is not in working condition (when not connecting to any input device or with no signal input), and after a set amount of time (10 minutes by default), it will power off. You can change the timer through FiiO Music app after connecting the Q5 to the phone via Bluetooth. 

Note that when the Q5 is in connected to other devices via Bluetooth, it will always stay in working condition each if there's no music playing, as it will also receive other system audio signals (such as the notification tone) from the phone/player.