9. What's the priority level of the Q5's 5 input methods?

A: 1. Here is the priotrity level of the Q5's five input methods:
Bluetooth > USB DAC > Coaixal = Optical = Line In

2. How to switch the certain input methods?
The Line In, Coaixal In and Optical shares the same port on the top of the Q5, so when the Q5 is connected with different sound source devices, please press the "Next track" button on the left side of the Q5 to Select the corresponding input methods.