It has a sound quality comparable to CD, installed outside the case to eliminate the electromagnetic interference inside the case, making the sound quality more pure. Support 2 channel analog 7.1 channel; High power: can promote all kinds of high resistance headphones, ordinary headphones and audio In WIN2000, WINXP, WIN7 8.WIN3003 system does not need to install the driver program, the operation is simple as long as the headset or speaker is connected, it can be used, compact size, easy to carry. Compatible with USB2.0 pure digital audio output, virtual 7.1 channel processing capability product detail: A small LED light; Support ordinary speakers or headphones with microphone holes; USB interface, plug and play, replace traditional sound card; Microphone recording function; Multi-channel technology to achieve 7.1-channel dynamic sound effects; Dynamically rotating sound field; Headphone and speaker mode free switching function; Analog speaker position free adjustment function; Output level adjustment; 16 preset rhythm patterns; 23 sound field preset modes; Convert analog signals (microphone and line signals of CD, MP3, TV, radio, etc.) into digital signals and save function The appearance is similar to flash disk, black shell, simple USB interface device, plug and play. Packaging includes 1* sound card