For those unfamiliar with audio specifications, FLAC (Free Lossless Audio Codec) is a file format that stores audio data without any loss of quality. This means that a FLAC file, especially one mastered at 24-bit 192kHz, offers a superior listening experience compared to standard CD quality (16-bit 44.1kHz) or compressed formats like MP3. The higher bit depth and sample rate of 24-bit 192kHz allow for a greater dynamic range and a more detailed soundstage, making "Hello" sound more immersive and lifelike.
: Producer Greg Kurstin utilized an Apogee Quartet to capture Adele's vocal performance. Composition & Musicality Adele Hello Single 2015 FLAC 24 Bit 19229