1,TV external audio or amplifier, creating a home theater, watching movies and watching dramas is more lifelike. 2,Newly upgraded electronic noise reductionandsignal gain technology, reduce current noise, enhance audio signal, clear transmission. 3,With independent power supply port, which can be externally compatible with high‑power audio and power amplifiers. 4,Plug and play, suitable for multiple devices, stable sound transmission without attenuation. 5,The input is coaxial or optical digital audio, and the output is R or L (audio output connector). 1 x Digital to Analog Audio Adapter1 x USB Cable1 x Optical Fiber Cable Item Type: Digital to Analog Audio AdapterMaterial: ABSandAluminum AlloyColor: As Picture ShownWeight: Approx. 133.0g or 4.7ozInput: Coaxial or Optical Digital AudioOutput: R or L (Audio Output Connector)Audio Input Connection: for Toslink, 1 x for RCA (coaxial)Audio Output Connection: 2 x for RCA (R or L), 3.5mm StereoSupport ampling rate 44.1 32., 48-96KHz playbackPower Input: AC 100-240V 50 or 60Hz Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.