1, support Bluetooth 5.3, fiber, coaxial, U disk, PC-USB, AUX multi-mode input; 2, support increased high sound quality mark wind input, remote control support K song reverberation and other sound effects adjustment. 3, high-fidelity professional ear amplifier, 215mW@16Ω, 200mW@32Ω 0.005% +N. 4, Support BYPASS function, 3.5(AUX) ear amplifier, Bluetooth transmission, RCA synchronous output; 5, support Optical, Coaxial, U disk, PC-USB, AUX input signal to Bluetooth signal wireless transmission to Bluetooth headset or Bluetooth speaker; 6, support mobile phone (OTG), computer, TV via USB input audio signal conversion of the corresponding digital or analog signal output, 7, Optical coaxial support up to 192kHz / 24Bit sampling rate input; 8, U disk support MP3, WAV, WMA, APE, FLAC and other formats play, the maximum support 128G capacity FAT32 format; 9, support multimedia remote control. Bluetooth receiving and U disk and PC-USB input can be controlled by remote control of QQ music and other players up and down song switch and play pause and volume adjustment; 10, with infrared remote control, support digital selection song (U disk) ; 11, support power memory, power automatically start and restore the state before power. 12, Full mode mute processing, eliminate the prompt sound on the sensitive earphone interference explosion ears; Plug Type :EU Plug,it applies to Indonesia, Germany, France, , Italy and so on. Voltage: AC 220V Colour:Black Material:plastic Package Contents: 1 x Bluetooth Receiver Transmitter 1 x Remote Control 1 x RCA Cable 1 x Fiber Cable 1 Adapter Only 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.