There are two ways to determine the sampling rate:
Use meta data from the source music. If the meta data is wrong or the source does not contain any sampling rate data, then NuPrime device will not display the correct sampling rate.  Even if the display does not show the correct sampling rate, the decoding will not be affected. The actual sampling rate is detected during the decoding process. Products using this method are: IDA-16, DAC-10 and uDSD
Use SRC (sampling rate converter implemented in FPGA) to detect the clock of the source music to determine sampling rate. Products using this method are: IDA-8, IDA-6 and DAC-9.
The sampling rate is displayed during the following conditions:
When an input is first selected, the Input Number and Sample Rate are displayed. Unless there is a change in input or sampling rate, the initial sampling rate will not be displayed again.
The sampling rate is displayed whenever there is a change in Input Source or music sampling rate.