I could not hear a difference with a quick listen and Roger Russell said no, if he understood my poorly worded question.
All of this led me to think it only worked through Tape 1, and not all the MAC sources since FM was a no go.
I am going to move my cd player connection from the MQ101, to the Mac Aux.
So in closing, I am still not sure about FM.
You would think the MQ is between everything or nothing.