Plug and play, USB power supply is more stable, no driver installation is required, and the sound is transmitted synchronously after connection. The TV is connected to the speaker, the sound quality is clear and full, the human voice is prominent, and you can enjoy the cinema-level audio-visual experience. The TV is connected to the power amplifier to transmit digital audio signals, bringing a better sound quality experience. Support PCM, Dolby, DTS, 5.1 sound effects, enjoy cinema-level stereo surround sound at home. Powerful intelligent optical fiber core, light pulse transmission audio reduces electromagnetic interference, clearer sound quality, stereo sound, and say goodbye to current noise. Note: Optical fiber interfaces are commonly marked with SPDIF, OPTICA, optical fiber, OPT, Toslink, etc. Check whether the device is a square optical fiber interface. Different batches may have different appearances, which will not affect the use; different light or display may cause color difference in the actual product Interface type: square fiber + 3.5mm audio Power supply: USB power supply Colour:Black Material:PVC+Aluminum Alloy Package Contents: 1 x Digital fiber audio converter