7. Why sometimes there is no sound when K3's coaxial and optical output is connected to the speaker?

A: When the PC player output device is set to "KS"or "ASIO", the sampling rate of K3's Coaxial and Optical output is followed by the tracks themselves. However, most speakers on the market with SPDIF input only support 48kHz sampling rate, so there will be no sound output.
For this kind of use environment, it is recommended to set the output device to "DS" or "wave out" on the music program on your computer.