OK just tested
a ) Running the stereo room EQ mode, it shows UMIK-1 -18dB gain adjustment
b) Running individual channel room EQ mode, it doesn't show UMIK-1 is being used.
Haven't compared the two EQ responses, if they are drastically different then know which mic is being used
Updated wiim home app, now shows umik1
Would be good if Wiim do some testing prior to release, I'd rather have more thoroughly monthly updates rather than bi weekly that introduce new bugs as well as fixing others