Feature: 1. Excellent Decoding Performance: Equipped with the for BB PCM 2707 decoding chip, this USB sound card delivers exceptional sound quality, surpassing the performance of PCM2704 and CM108 models for discerning audiophiles. 2. Plug and Play Convenience: Enjoy seamless connectivity with no driver installation required Simply plug it into your computer's USB port, or connect via smartphone OTG for versatile sound access. 3. Enhanced Sound Clarity: The active crystal oscillator minimizes clock jitter, resulting in better sound resolution, punchy bass response, rich vocals, and beautifully textured sound for an immersive listening experience. 4. Optimized PCB Design: Our PCB features curved routing to significantly reduce sign delay and reflection, enhancing sign processing performance and overall sound quality for a clearer playback experience. 5. Default Coaxial Output: The sound card defaults to coaxial output, seamlessly connecting the P2 interface on the circuit board to the I2S output, providing high resolution sound transfer options. Specification: Item Type: USB Sound Card Material: PCB, Acrylic D A Converter: PCM2707 PCM Sampling Frequency: 44.1HZ . Package List: 1 x USB Sound Card