1. Player Settings - Audio - 3.5mm output selection, set to SPDIF.
2. Connect one section of coaxial cable to the 3.5mm audio port of JM21, and connect the other end to the coaxial decoding device.
3.Play music on JM21 player software to output coaxial signal.
Note: a. At this time, the coaxial signal is decoded in the third-party decoding equipment, JM21 to realize the turntable function.
b. The definition of the coaxial cable: 