Recently I did a simple experiment to find out how this ORFS information is derived from. I downloaded 2L test bench MQA file and playback on Roon. You will see something like this…
See the bottom of the album, I circled in red, this is ORFS. Now open a tag editor such as Kid3, modify the file with the following tag circled in red.
The value 352800 in whole number corresponds to 352.8k, now change this value to 44100 which corresponds to 44.1k. Save it and let Roon detect again. See below:
Bingo! now Roon reports as 44.1k! It seems this type of detection is based on the tag called ‘ORIGINALSAMPLERATE’, modify the value and Roon will report based on this. This is simple experiment everyone can do.
If those who have MQA DAC, I suspect changing this value will cause the DAC to report whatever value you put inside.