1:Real USB Plug&play
2:Drive 2CH speakers Directly
3:External power adapter NO NEED
4:Digital Class-B Power Ampllfier inside

1.100% Brand New.
2.Plug and Play USB 2.0
3.Self-defining balanced mode
4.16 Kinds of rhythm preserve the mode
5.23 Kinds of acoustic fields preserve the mode
6.Supports 3D sound (Ac-3) Stereo 5.1-channel sound track Virtual speaker shifter
7.Speaker/headphone jack Microphone jack
8.Work for Windows 2000 / XP / VISTA and Mac.
9.Chipset: 6911
10.Color : Smoky Gray/Blue/Green
11.Package Content:
   1 x USB 2.0 to MIC / Speaker Audio Sound Card Adapter