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 chip ES9023P,Upgraded headphone jack output3.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 + bass4.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 jack5. Version:2.0b version, HDCP2.2, resolution support 4K at 60hzU disk play format:/dsd/dts-es/dts/ac3/flac/ape/wav/hdcd/aac/m4a/mp3 etc.Sampling rate/Bandwidth:DSD support DSD256/1 bit, PCM support 384KHz/32bitAudio output amplitude: equal 2VrmsSignal-to-noise():112dbBluetooth version:5.0 version, transmission above 15mUSB sound card support system:Support WinXP/Win7/Win8/Win10/Win11Output :Support 5.1CH decoding output and optical fiber/coaxial source code outputDecoding output ability:Support dts/ hard decoding (authentic 5.1) and PCM soft decoding ( fictitious 5.1)Operation control:Support knob and remote controlOutput channel:Support 2.0/2.1/3.1/4.1/5.1CHVolume adjustment:Support Overall volume adjustment and mono volume adjustmentLCD Display: Support 3.2inch color screen display and backlight switch5.8G wireless surround: Support 5.8G wireless module expansion (only 5.8G version)Power supply:DC12V/1AWeight:1.1kgPlug Type:US Plug,it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on.Voltage:AC110VColour:BlackMaterial:aluminum alloySize:218x110x78mmPackage Contents:1 x Host1 Adapter1 x USB Sound Card Cable1 x Remote Control1 x Digital Optical Fiber Cable1 x Bluetooth Antenna1 x English User 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.