Rich,

I turned everything up as high as it would go, the mic volume(s), master, etc. No humm, no hiss.

In an effort to duplicate the humm, I plugged in an unshielded, inexpensive mic cable and an old Shure mic. Then I get a low-level humm, but again, the volume level really was turned way above normal operating levels.

If I recall, Dave is running everything through a mixer. It's possible that this could be the root of the problem, but without actually being there and going through the process of elimination, I cannot make that determination. Like I said, time for another trip to the frozen north--just as soon as the BENYS leave.

Gary