Compatible with USB2.0 pure digital audio output, virtual 7.1 channel proceing capability product detail: A compact LED light; Support ordinary speakers or earphones with microphone hole; USB interface, plug and play, replace traditional sound card; Microphone recording function; Karaoke function; Multi-channel technology to achieve 7.1-channel dynamic sound effects; Dynamic rotating sound field; The function of freely switching between headphone and speaker modes; Free adjustment function of analog speaker position; Output level adjustment; 16 preset rhythm modes; 23 kinds of sound field preset modes; The function of converting analog signals (microphone and line signals of CD, MP3, TV, radio caette recorder, etc.) into digital signals and saving The appearance is exactly like a flash drive, black shell, simple USB interface device, plug and play. System Requirements: 1. Desktop or laptop computer and USB interface 2. Suitable for Windows 98 / se / ME / 2000 / XP / Server 2003 / Vista, Linux / MacOS 10 or higher 3. xear 3D (virtual 7.1 channel sound simulation software) for Windows XP / Vista complaint with USB2.0 full-speed(12Mbps)specification compliant with USB Ausio Device cla specification 1.0 compliant with USB hid Cla specification1.1 USB bus-powered mode, no exdternal power required Connectors:USB type-A,Stereo output jack,Mono microphone-input jack Functional keys :microphone-mute,headset-mute,volume-up,volume-down LED indicators:microphone-mute satus ,activity include Xear 3 ,THE Virtual 7.1 channel sound simulation software for windos XP/Vista driverle -no driver required for windows 98 SE/ME/2000/XP/Server 2003/Vista.Linux,Maco Frequently Asked Questions: 1: Why is there no sound after I plug it in? : Check whether the earphone and microphone are plugged into the sound card. If your computer does not switch automatically, you only need to manually switch once under the control panel-Sound-Audio. : Go to the control panel---sound--audio, and change all the defaults to USB sound card. : Turn off the music playing or recording software and then open it again, let the software reconfirm the default sound card, or go to the software option-Audio to change the default to a USB sound card. 2: Why does my microphone have low drainage and great accompaniment? : Turn on the microphone enhancement, in the small button of the microphone in the mixing interface. : Please turn down the volume on the accompaniment software, and turn up the microphone volume in the sound card driver interface mixing area, and turn up the total volume. Adjust these three volumes according to your needs. 3: Why is my microphone noisy? : Check whether there is interference from peripheral devices, such as USB radiators. : Turn down the microphone volume and turn off the microphone boost. : Check the microphone contact. : Check whether the computer is leaking electricity and whether there is a lot of static electricity. 4: Why does my sound card have noise and electric current? : Observe whether the interface is inserted in place. Please insert the desktop computer behind the computer. : Check whether there is wirele interference around, stay away from the mobile phone, or unplug the laptop and try. 5: Why does the sound card get hot? The USB sound card is an independent sound card. It contains a chip inside. It is normal to generate heat and will not affect the use. Please do not use external devices such as extension cords or HUB. The USB interface should use a high-speed 2.0 interface. Abnormal operation will increase the heat.