Comment by jdietrich

The loss of information from a reduction of bit depth is purely a reduction of signal-to-noise ratio; the least significant bit is dithered to eliminate quantization distortion. In normal domestic listening scenarios this is usually imperceptible, because the noise floor imposed by dither is below the threshold of hearing for any reasonable gain staging.

https://www.izotope.com/en/learn/what-is-dithering-in-audio....