Description: 【TYPE】Digital to Analog Audio Converter , this converter is incredibly versatile and can be used with a variety of devices. 【Optical or Coaxial to 3.5mm or L/R RAC】Optical / coaxial input: set top box, , tv ,computer etc. 3.5mm/RAC out put: speaker headphone amplifier etc. (Note: When the device has both optical fiber and coaxial interfaces, it is recommended to choose optical fiber input first) 【HIGH QUALITY OUTPUT】The Digital To Analog Audio Converte ensures high fidelity sound quality output, electronic noise reduction, stable and undistorted quality, main control chip, electronic volume adjustment, 192kHz Sampling Frequencies, the sound is clearer 【ALUMINUM ALLOY SHELL DESIGN】 The sleek aluminum alloy design not only looks great but also helps to dissipate heat and maintain a stable performance. 【COMPACT SIZE】The digital to analog audio converter is LengthxWidthxHeight 4.9cmx5cmx2.15cm/1.93inchx1.97inchx0.85inch,compact size of this converter makes it portable, easy to use. Specification: Shell Material: aluminum alloy Input connection: coaxial or optical digital audio Output connection: 3.5mm L/R RCA Size Chart: LengthxWidthxHeight 4.9cmx5cmx2.15cm/1.93inchx1.97inchx0.85inch Package Includes: 1 Digital To Analog Audio Converter 1 Micro USB Power Cable 1 User Guide Note: Please allow slightly errors due to manual measurement and different monitors.