—the distance between the quietest sound and the loudest peak. 16-bit (CD Quality):

By working in 24-bit (or even 32-bit float), engineers ensure that these errors don't accumulate into audible artifacts. This "safety margin" preserves the integrity of the recording from the first take to the final master. How to Experience HD24Bit Audio

When you listen to an file (usually in FLAC, ALAC, or WAV format), you are removing the "brick wall" filter. In standard audio, engineers must apply a steep low-pass filter around 22kHz (for CD) to avoid aliasing. This filter creates "ringing" artifacts that affect the audible frequency range.