Hello,
I originally purchased an A9a unit on May 1, 2017. Was wondering which frequency its outputting, the original A9 (on the M1) or the Omni-8 (on M1). I have since purchased the M1 and gave the A9a to my mother, and want to make sure I can match the old devices frequency when needed. I was told there was a switch around the time of my original purchase in 2017.