Where can I get the calibration profile for my XREF 20 microphone? Karl Steinmanis Updated December 30, 2016 02:01 Follow Visit our downloads page, select your OS and go to the bottom of the page. Enter the microphone's serial number into the microphone ID field and click "Download". Related articles What sample rate should I be using for measurements? Headphone calibration files are missing. (Mac) I'd like to use the plugin on any audio source and not just in my DAW. Can I measure a setup with a subwoofer? I am getting feedback from the mic. What's wrong? Comments 0 comments Please sign in to leave a comment.