As I could not tell much of the difference while trying the demo, I would like to refer this manufacturer's link to you guys and invite you to comment. Maybe my ears are not sensitive enough
Thanks for referring "Peter, Paul and Mary in Concert". I think I got your point. So the quality of recording is the key. A good stereo recording can bring a near surround effect through earphone.
For those of you who do not have a record of "Peter, Paul and Mary in Concert" as referred by the 4th fl., the link below may bring you the pleasure of a good listening: