Usage Tips:Features: Double operational amplifier high fidelity electronic noise reduction technology+signal gain technology, enjoy an auditory experience! External 5V1A power supply can connect more high-power amplifiers and audio quality without attenuation for mission. Equipment connection and fer to old amplifiers and speakers. The converter converts to an R/L dual lotus interface through a fiber optic interface to connect to the speaker, Fast heat dissipation of alloy outer shell. The digital Toslink/fiber SPDIF to RCA audio converter allows you to convert 2-channel digital coaxial or Toslink/fiber SPDIF input signals into RCA analog stereo outputs. This SPDIF to RCA audio converter is perfect for home and professional audio applications, saving the cost of upgrading devices for compatible connections, and providing separate digital coaxial cables and Toslink inputs for dual function conversion. The compact exterior design makes it suitable for installation in almost any position, regardless of limited space, while still providing lossless audio signals. In addition, digital coaxial or Toslink to RCA converters support plug and play installation, saving you time and trouble. Specifications: Input: coaxial/fiber optic digital audio Output: R/L stereo Power supply: DC5V power supply Due to different batches, there may be differences in product appearance and printed text, which will not affect use Material: Aluminum alloy colour: black Package Contents: 1 x Host 1 x Fiber optic cable 1 x USB power supply cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.