The album was tracked at various studios, including Eastcote Studios in London, using Pro Tools HD. Regardless of whether you buy the vinyl or the 24-bit FLAC, the source signal started as 1s and 0s.

Putting on the 24-bit vinyl rip of 21 is a jarring experience for those used to the Spotify standard.

If you have a high-end DAC (Digital to Analog Converter) or a DAP (Digital Audio Player), the version of 21 is the definitive digital master.

Whether you invest in the or hunt down a clean vinyl pressing, you are finally hearing the album as Rick Rubin, Paul Epworth, and Adele heard it in the mastering suite. And trust us—once you hear the whisper before the storm in 24-bit, or the needle drop on "Someone Like You," you will never go back to the compressed version again.

HDtracks, Qobuz, and ProStudioMasters offer the official 24-bit FLAC (usually 44.1kHz or 96kHz) of 21 . Do not settle for YouTube rips.