Professional 3D Sound and Virtual 5.1-Surround USB 2.0 External Sound Card (10 PCS)
5.1 channel sound effect (virtual 5.1 sound with just 2 channels). Compatible with USB 1.0 / 1.1 / 2.0. Multi-channels technique achieve analogy Stereo 5.1-channel sound effects. Dynamic surround background sound effects. Digital Class-B Power Amplifier inside. Virtual speaker shifter. Available for stereo mixed music effects; karaoke function. 1x Audio output Jack. 1x Audio input Jack(Mic). This is an excellent device.