In order to measure the latency & A/D DA conversion quality of an interface, you can loop out of the interface & return the signal to an input.
The following are latency measurements at the (4) different sample rates:
44.1k – 1.678 ms
48k – 1.542 ms
88k – .839 ms
96k – .771 ms
Obviously if you want the lowest latency possible, you should run at a sample rate of 96k.
Next let’s look at the frequency & phase response at each sample rate.