Quote:

...when I turn off the harmony to sing the parts in between the harmonies, it won't put out the dry voice signal without harmonies or the voice signal using the Pre-Effects without harmonies.




sounds like a problem that would be best solved with hands-on involvement. If you are not too far from the store where you bought it, you might have good luck taking it there to let the techs determine if the device is malfunctioning, or if you are doing something to cause the problem.