I've had my XP-80 for almost a year, long before I knew about this board or this discussion. I've noticed the distorted buzz a bit, but it isn't really a problem, and here's why. The sounds on the keyboard, example, acoustic piano, aren't good enough to be used solo. I wouldn't want to do a solo piano album on the XP. Once you've got guitars, drums, bass, etc, there is no way on earth you're going to hear this problem. None!