1.Upgraded 3.2inch Color Screen,Upgraded USB flash disk to play output from optical fiber/coaxial source code,Upgraded 2.0/2.1/3.1/4.1/5.1ch and other channels output mode. 2.Upgraded DSD/ and other formats for more powerful playback,Upgraded disk reading ability of USB flash drives / card ,Upgraded 5.8G wireless surround support,Upgraded DAC chip ES9023P,Upgraded headphone output 3.Channels:2.0 channel: front left + front right,2.1 channel: front left + front right + bass,3.1 channel: front left + front right + center + bass,4.1 channel: front left + front right + left surround + right surround + bass,5.1 channel: front left + front right + left surround + right surround + center + bass 4.Parameter:Input port: (x3) + ARC + Coaxial + Optical Fiber + USB Sound Card + AUX + Bluetooth + U Disk etc.Output port: + Optical Fiber + Coaxial + 5.1CH + 3.5mm headphone 5. Version:2.0b version, HDCP2.2, resolution support 4K at 60hz U disk play :/dsd/dts-es/dts/ac3/flac/ape/wav/hdcd/aac/m4a/mp3 etc. Sampling rate/Bandwidth:DSD support DSD256/1 bit, PCM support 384KHz/32bit Audio output amplitude: 2Vrms Signal-to-noise():112db Bluetooth version:5.0 version, transmission above 15m USB sound card support system:Support WinXP/Win7/Win8/Win10/Win11 Output :Support 5.1CH decoding output and optical fiber/coaxial source code output Decoding output ability:Support dts/ hard decoding (authentic 5.1) and PCM soft decoding ( fictitious 5.1) Operation control:Support knob and remote control Output channel:Support 2.0/2.1/3.1/4.1/5.1CH Volume adjustment:Support Overall volume adjustment and mono volume adjustment LCD Display: Support 3.2inch color screen display and backlight switch 5.8G wireless surround: Support 5.8G wireless module expansion (only 5.8G version) Power supply:DC12V/1A Weight:1.1kg Plug Type:UK plug,it applies to , the United Kingdom and so on. Voltage:AC100-240V Colour:Black Material:aluminum alloy Size:218x110x78mm Package Contents: 1 x 1 Adapter 1 x USB Sound Card Cable 1 x Remote Control 1 x Digital Optical Fiber Cable 1 x Bluetooth Antenna 1 x English Manual 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.