>Nyquist-Shannon means a 44.1kHz-sampled signal can perfectly capture an reconstruct a signal up to 22.5kHz freqs, and it's not like it's a flat cut off after t

>Nyquist-Shannon means a 44.1kHz-sampled signal can perfectly capture an reconstruct a signal up to 22.5kHz freqs, and it's not like it's a flat cut off after that. After that you get aliasing artifacts so generally having any input above that frequency to ADC will cause some problems. Similarly with DAC, to get that 20kHz you need to have nice sharp filter cutting any higher frequencies off. ...which leads to one actual benefit of higher sample rate for ADC/DAC, it's easier to design filters because with say 96k you don't need that sharp of a cut to still not get artifact coz you're "safe" all the way to 48k