The digital-to-analog Converter and Bluetooth converters convert optical or Coaxial Digital Audio Signals and Bluetooth receivers into Stereo analog signals.Audio amplifier helps users connect high quality digital audio signals to regular audio channels. This product is suitable for Home Theater, teaching, training structure, conference room, home appliance store and other places to use.Support for conversion of digital audio signals to analog audioBluetooth Receiver, built-in Bluetooth 5.0 chipSupports one fiber and one coaxial interface inputSupport for RL audio port outputBuilt-in high-performance chip supports 192khz/24-bit audio parametersUltra low consumptionDC 5VDimensions:50X42X22mmPlug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so onColour:blackMaterial:ABSPackage Contents:1 x Digital to Analog Audio Converter Adapter1 x USB CableOnly 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.