Features: Volume control design: The digital-to-analog converter comes with a professional volume control knob, which can easily adjust the output volume of RCA and AUX, and supports simultaneous playback of speakers and headphones. Supports all popular sample rates: The digital-to-analog converter accepts uncompressed digital audio as input at sample rates of 192kHz/24bit, 96kHz, 48kHz, 44.1kHz, 32kHz and provides electromagnetic noise free transmission. Bluetooth-compatible: The digital-to-analog converter supports Bluetooth-compatible version 5.0. SBC, AAC decoder and Bluetooth-compatible antenna with signal range up to 10 meters. Compatibility: The digital to analog audio converter is designed for home or professional audio signal switching. It converts coaxial, Toslink digital audio, stereo audio or Bluetooth-compatible signals to analog stereo audio signals. It is also a digital music player with a USB flash drive input and supports MP3, WAV, APE, FLAC and WMA lossless formats. Input Terminals: 1 x Coaxial Digital (Coaxial) Terminal, 1 x Optical Digital (SPDIF/Toslink) Audio Terminal. Specifications: Material:Metal Colour: Black Input: Coaxial or Optical Digital Audio Output: R/L (audio output connector) Audio input connection: Toslink, 1xRCA (coaxial) Audio output connection: 2xRCA (right/left) Support sampling rate 44.1 32., 48-96KHz playback Power input: AC 100-240V 50/60Hz Power supply: 5W (maximum) Package Includes: 1x Digital to Analog Converter note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.