Description : This A886 My Music Audio Sound Blaster lets you music is no longer confined to the headphone earmuffs，it really will sound in your environment.Give you a comfortable listening environment. Feature : Model : A886 Sound Blaster Small volume， easy to carry Stereo double channel output Dual channel technology， implementation of 5.1\/7.1 channel dynamic sound Product use: desktop \/ laptop \/USB interface System requirements:Applicable to WINDOWS 98\/SE\/ME\/2000\/XP\/Server 2003\/7 USB external independent digital 7.1 sound field Speacification: Frequency response:10~100，000 Hz Input Power :12~25W Peak Power Output :9W 4g， 10% RMS Power Output :25W， 4ohm， 12W， 8ohm Input Sensitivity:200mv +\/- 10mv lnput Impedance: !#!amp!*!gt; 10Kohm Signal To Noise Ratio: !#!amp!*!gt;\/= 90 dB Slewing Rate: 81% @ 20W， 4ohm 88% @ 12W， 8ohm Input Voltage: 9V Speaker Impedance: 32ohm THD (Total Harmonic Distortion) : 60dB Size: 5.4 X5.2X2.8cm Weight: 52 g Package include : 1 X A889 Digital Sound Blaster 1 X Pouch 1 X CD