7. How to use the line input function of K7?
(1) After powering on the K7, short press the input button and switch the input mode to LINE. The K7 will enter line in mode.
(2)Switch the output mode to PO and connect the headphone to the K7.
(3) Scroll the volume knob and adjust the volume of the K7 to a suitable level before playing music.
(4)Play music on the front device to enjoy the music.
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