USB audio device class spec. 1.0 and USB class spec. 1.1 compliant Support 48/44 KHz sampling rate for both playback and recording Supporting the Plug and Play features hot-swap, it is easy to use, USB spec 2.0 full speed compliant In digital playback mode, it receives audio stream form PC via USB interface and transmits audio data according to the AESEBU, IEC60958, SPDIF cnsumer interface standards In analog playback mode, it supports 6 channels codec for analog playback In digital recording mode, it receives SPDIF digital audio input and sends back to PC through USB