The NanoSound One is a Raspberry Pi 4 aluminum case with an integrated Hi-Fi DAC. It turns your Raspberry Pi 4 into a game-ready high-resolution network music player. It can play any audio file including MP3, FLAC, ALAC, WAV, AAC, FLAC, DSD, Audio CD and many more.It features a built-in Hi-Fi DAC (Digital Analog Converter) designed for audiophiles and offers even more. It even supports a large number of music services including Spotify, Web Radio, Qobuz and Tidal.