Richard, . . . Just had to reply as I just went through the same frustration with the MFC10. After a number of conversations with Yamaha Support, we determined if you want to control the master volume with a foot pedal, you'll need the FC7. I have the MFC10 conrolling the upper parts, and the FC7 controlling the overall volume. Works great!

By the way, good to hear someone else in AZ with the Tyros. I thought I bought the only one in AZ at Guitar and Keyboard City.

Tim