USB Sound is an USB audio controller.It supports 32KBz,44.1khz.(which two need driver or application software support)and 48KHZ sampling rate in digital recording,48KHZ sampling in analog recordin and 48KHZ in digital/analog audio playback. In digital playback mode,it receives audio stream from PC via USB interface and transmits audio data according to the AES/EBU,IEC60958,S/PDIF consumer interface standards.Only R,L channel PCM audio in 5.1 channel can be conveyed in digital playback mode.In analog playback mode,it supports 6 channels codec for analog playback. In digital recording mode,it receives S/PDIF digital audio input and sends back to PC through USB.Three sampling rates;includes 32KHZ,44.1KHZ are automatically locked internally,in analog recording mode,fixed 48khz sampling rate is supported by analog audio recording. * plug and play * 3 input terminals * 3 output terminals * Supports AES/EBU,IEC60958,S/PDIF consumer formats for stereo PCM audio * Fixed 48KHZ sampling rate for 5.1 channel playback. * Supports analog recording function * Supported SCMS copy protection * Compatible with Win98SE,ME,2000,XP,Mac OS 9.1 * Fully duplex playback/recording audio stream without sound card in PC * Compliant with USB specification v1.1 * Compliant with USB audio device class v1.0 * Supports USB full speed 12Mbit serial data transmission * Alternate setting 0 is a zero-bandwidth setting used to release the claimed bandwidth on the * bus when this device is inactive * Isochronous transfer uses adaptive and asynchronous synchronization * Support multi channels audio code interface for 5.1 channel playback * Supports conventional audio 2 channels source playback Package content : 1x USB 2.0 sound card 1x Driver CD 1x USB cable