Ok, let me try to explain. I have a NAD T785 AVR about 5 yrs old that has Multieq xt. I had a pro setup done by my dealer 4 years ago and all was fine. So last year I asked NAD directly what cards I needed to have 96 KHZ Audyessy processing plus the advanced codecs like DTS MA. My dealer installed the VM100 and Am200 cards and upgraded the software. Multi eq xt setup was fine including at 96 KHZ. When my dealer tried to run the pro setup the subwoofer is not operative with sources above 88.2 khz. So If I want to listen to 96 khz sources I turn Audyessy off and then the sub works properly but no Audyessy eq is applied. I repeat- when I run the simple EQ XT built into the receiver all is fine at 96 khz. No one at Audyessy or NAD can figure this out. That is why I inquired about the differences in the standard mic vs the pro mic as if there wasn't much difference then I would forget about using pro and just use run the standard setup again. And also why I wondered about coming XT32 software.