12. How to use the coaxial and optical decoding function?
(1) On the homepage, short press the volume knob to enter the working mode menu. Rotate the knob to Optical, and short press it to enter the Optical decoding mode (Switch to Coaxial to enter the coaxial decoding mode).
(2) Use an optical or a coaxial cable to connect the input device to the Q7 to achieve optical or coaxial decoding.
(3) Connect headphones to the Q7, and adjust the volume of the mobile phone to a suitable level before playing music.