@Brad Saucier Odd, when I hook up my headphones into the jack on the XW the notes sound fine. Is the jack stereo or mono? But now that you mention it, a slight chorus effect is what it sounds like. I think I figured it out. My studio monitors are hooked up to my audio interface and while it is true stereo, the line in jacks on the interface are not set to be stereo by default. So I was layering both mono signals on top of each other in each monitor. Oops