I want to be able to spacially arrange instruments in a bigger stereo field. On many commercial recordings I listen to with headphones, instruments seem to be hovering over my head, or be playing way out there. How are these effects achieved? I know reverb and chorus can help with this. I have a Behringer Modulizer and it allows you to set up a stereo image and another for 3D image, but the psychoacoustics involved sound unnatural, almost like I have a clogged ear on one side. How can I attain more natural spacial separation?