Product Details ：The K5 Pro Is A Mini Stereo Gaming Headphone Amplifier With Microphone, Supporting Usb Type-c,optical And Coaxial Digital Inputs, 3.5mm Headphone Jack, And Outputs, Suitable For Most Home Audio Systems.with Treble And Bass Control, It Can Be Used As A Preamplifier Or Volume Control For Pc/. K5 Pro Ensures Exquisite Muslcallty, Accurate And Realistic Phasing, And Reproduction Of The Sound!input : Usb Type-c, Optical, Coaxial, Microphoneoutput : 3.5mm Headphone, Pc-usb Supports Input Sampling Rate: Up To 24bit/96khzoptical/coaxial Supports Input Sampling Rate: Up To 24bit/192khz Output Level: 2vpowe Supply:5vpower Input Interface: Usb Type-c: Less Than 0.snr: 10dbfrequency Response: 20hz-20khz (3db)pc-usb Support : Xp//w8/w10//linuxdistortion: 0.;amp Output Maximum Power: 1000mw/16, 500mw/ 32, 300mw/64, 150mw/128, 80mw/300headphone Matching Impedance: 16-300colour:dark Graymaterial:metalpackage Contents:1 X Headphone Amplifieronly The Above Package Content, Other Products Are Not In