Zalman RS6F-USB 6-Channel Surround Sound Headphones

Zalman RS6F-USB based 6-speaker Surround Sound Headphones - In-line 5.1 channel USB soundcard, Electro Dynamic Round Type Micro Speaker, Frequency Response - 50Hz ~ 20KHz, Sound Pressure Level 89 dB +/- 3 dB at 1kHz, Windows Vista compatible