NOTE!!!
Determine whether your product supports optical audio transmission.
Determine whether there is an optical signal coming from the optical fiber adapter. After connection, determine whether to select the optical fiber signal source transmission mode on the device.
Correct connection of the product One in and two out: If there is light in the two sockets at the other end of the device when the product is inserted, it indicates that the signal is normal and two power amplifier devices can be inserted.
Two-in and one-out: Two output devices cannot be connected to both ports simultaneously; otherwise, no sound will come out. Before use, the other output device must be turned off before it can work.