None. You will notice no change. Twenty-four bit depth is useful for mixing and mastering, but not for playback, as humans have a dynamic range envelope spanning ~80dB at any given time. Sixteen bit is capable of 97dB. You cannot hear everything a redbook CD is capable of holding. And, the loudness wars have compressed recordings into ever lower dynamic range envelopes.
@amirm has produced some nice videos exploring the contents of these files to demonstrate whether they are worth the cost (they are not).
Also, if you study the test results on this site, you will soon discover a great many consumer products, especially amps, cannot reproduce even 16 bits dynamic range. Why feed it 24 bits, when it can only play 14?