With the popularity of streaming media and high-sampling digital audio files, digital audio transmission, storage, management and playback increasingly rely on PC platforms. Many software products have emerged, such as Roon, TIDAL, Qobuz and HQPlayer, etc., which are all inseparable from the PC platform. Among them, HQPlayer is currently the most complete desktop upscaling software, which can greatly improve or even change the listening experience, and is increasingly recognized by music enthusiasts.