feature Supports AES/EBU, IEC60958, S/PDIF Truly supports 5.1 channels and 7.1 channels. Can connect to 5.1 speakers Up to 48KHz sampling rate, supporting 32KHz/44KHz/48KHz digital recording function The sound card fiber output only supports a sampling rate of 48KHz, so DTS-CD is 44KH and requires conversion to listen Support Win98/ME/2000/XP/VISTA/WIN7/WIN8/MAC OS9.1 (only 2 channels can be used in MAC) Playback and recording of full duplex audio streams without the need for a built-in PC sound card USB 2.0 is backward compatible with USB 1.1; Compatible with audio device specification V1.0; Supports USB full speed transmission specifications up to 12Mbps; 3 input terminals (one of which is a fiber optic input) 3 output terminals and 1 fiber optic output terminal; Output: 5.1 channels+fiber SPDIF Composition: PC+sound card+amplifier and 5.1 speaker Applicable to: HTPC home theaters and friends with high audio quality requirements (such as watching movies/games/karaoke), can be plugged into regular earphones for voice chat and online karaoke. Other: Enjoy real AC-3 or DTS surround sound effects in your digital home theater or connect directly to a 5.1 active speaker. Packaging includes 1 * Sound card 【Exceptional Performance】Engineered for high efficiency and effectiveness, this product delivers outstanding results every time. Its advanced features ensure consistent performance, making it a reliable choice for your needs 【Eco-Friendly and Sustainable】Made with environmentally conscious practices, this product is eco-friendly and contributes to sustainability efforts. It is designed to minimize waste and reduce environmental impact. 【High-Quality Materials】Crafted from premium, durable materials to ensure longevity and superior performance. Each product is meticulously tested to meet high standards of quality and safety. 【Versatile Functionality】This product is multifunctional and can be used for a variety of tasks, providing you with the flexibility and convenience needed to handle multiple uses with a single tool. 【User-Friendly Design】Ergonomically designed for ease of use, this product offers intuitive controls and a comfortable grip, making it perfect for both beginners and experienced users.