User incompetence. I can make any harmonizer sound SO much better than any demo I ever heard. Even my 25 year old Digitech stuff sounds better than the newest demos on line. What's WRONG with these manufacturers???? Why don't they use competent people to demo the units?
To be fair - this girl (Laura Clapp) is about the best I've heard, but still ... no cigar.
https://www.youtube.com/watch?v=XbF9DPsU6Qs