Usb sound card interface usb 20 supported system 51 line output 3 line in 1 outputs 1 x headphone 2 x rca 1 x tos link optical inputs 1 x microphone design external area of use home entertainment sound chip creative sound core3d dolby format dolby digital live technologies scout mode crystalvoice sbx pro studio signal noise ratio 100 db headphone amplifier 600 supported operating systems mac os x windows 7 windows 8 windows vista windows 10