This device can distribute one optical fiber digital audio signal to two signals ,which connects to two sets of power amplifier system.Built-in Bluetooth transmitter function ,which can help users with easily connecting high-quality digital audio signals to Bluetooth receiving devices, likes Bluetooth headphones and Bluetooth speakers.Built-in version 5.3 receiving and transmitting integrated high-tech Bluetooth module, the transmitting mode supports the simultaneousconnection of two pairs of Bluetooth headsets or Bluetooth speakers; the receiving mode supports the connection of mobile devices such as mobile phones and ipads;Support digital audio to analog audio conversion signal.Support Bluetooth automatic search and connection receiver.Using Bluetooth dedicated antenna, the signal spreads stably.Support Bluetooth connection indicator.Built-in high-performance DAC chip, support 192K / 24bit sampling rate.Support 1 optical interface and 1 coaxial input interface. And a RCA and a 3.5mm audio output interface.Support output volume adjustment.Ultra low power consumption.Support power-off memory, Bluetooth automatic connection function.Colour:blackMaterial:Aluminum alloyPackage Contents:1 x DAC Converter1 x USB Cable1 x Audio Cable1 x English manualOnly 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.