I have the Ultima Embraces with the same feature and although I can tell a difference when I flip the switch, I do not prefer one sound over the other. I'm not sure I can describe the difference. I can see why the reviewers are not clear on the issue. I suppose the dipole should be better for surround movies and the monopole for surround music (like DTS). Although I own several DTS surround disks (which are wonderful sound btw), I don't bother to switch them.
