The Hidizs S3 Pro is a portable DAC (Digital-to-Analog Converter) designed for high-resolution audio playback, offering advanced features and exceptional sound quality for music enthusiasts. It supports lateral devices via Type-C connectivity, making it highly compatible with modern smartphones, including Apple's iPhone 15. The product is equipped with the ESS9281C PRO DAC, known for its low power consumption and ultra-low distortion, enabling PCM support up to 32Bit/384kHz and DSD128. With 8X MQA support, the S3 Pro is capable of fully unfolding MQA files, enhancing the listening experience for users of TIDAL and HiBy Music. The device includes a sampling rate LED indicator that visually signals the quality of the current audio stream, enhancing user interactivity with senses beyond just sound. Users can choose among three firmware styles for tailored sound profiles: transparent treble, tonal balance, and enhanced bass. Constructed with high-purity silver and OFC wire, the S3 Pro is both durable and optimized for performance. It is incredibly compact, measuring only 0.79 inches in diameter and 3.54 inches in length, making it easy to carry. Built-in features include support for wire control earphones with a microphone, allowing users to manage playback and phone calls seamlessly. Certified as Hi-Res Audio, the S3 Pro exceeds standard audio resolutions, ensuring superior sound reproduction.