Description: Stable and reliable, high integrated chip, , USB, digital model conversion and transmission to ordinary speakers for playback, and upgrade and use of ordinary speakers. Application scenarios Home theater, U disk music, home K song, mobile music. This DAC converter converts optical or coaxial digital audio signals and receivers into stereo analog signals. Help users connect high quality digital audio signals to regular AV amplifiers. Easy to set up, no special software, app, or driver to install, a true plug-and-play digital audio adapter Input: optical fiber/coaxial//U disk/microphone. Output: RCA left and right channels/3.5 stereo Specification: Name: Wireless receiving digital-to-analog converter Input: optical fiber/coaxial//U disk/microphone Output: RCA left and right channels/3.5 stereo Power supply interface: DC 5V 2A : Blutooth5.0 Music format: MP3, WAV, WMA, APE, FLAC, SBC Sound effect mode: , rock, jazz, classical, country Colour: Black Size Chart: Size: approx.70x82x27mm/2.75x3.23x1.06inch Package Includes: 1 Piece Compatible DAC Converter 1 Piece Optical Cable 1 Piece USB Power Cable 1 Piece Manual