So what do the numbers mean? It might help to think of an audio signal as a sound wave being plotted on a graph. So a hi-res file can be 24-bit/44.1kHz, where bit-depth is higher than CD quality but sampling rate is the same, and vice versa. First things first, should you care about hi-res streaming? High-resolution (often shortened to 'hi-res') audio is a term used to describe music files that have a higher sampling frequency and/or bit depth than that of CD-quality, which is specified at 16-bit/44.1kHz.
