1,[Digital To Analog Sound Converter] DAC converter can convert digital sound signal transmitted by optical, coaxial and Bluetooth to 3.5mm sound signal output, solving the problem of connecting different sound interfaces to analog amplifiers. 2,[Bluetooth] DAC converter adopts the latest Bluetooth version 5.1 lossless transmission technology, can support cell phone Bluetooth sound push. And Bluetooth special antenna, the signal reception is stable. 3,[Sound Sampling Rate] Built in high performance DAC chip supports 192K 24bit sampling rate, helping to solve the problem of connecting different sound interfaces to analog amplifiers. 4,[Support Volume Control] When using the converter, the stepless adjustment function can help you easily adjust the volume to suit your needs through the volume adjustment button. 5,[Widely Used] Digital to analog sound converter is suitable for TV, telephone, tablet, computer, and can be used in home theater, teaching, training structure, conference room, electrical stores and other places. 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.