If you drive a headphone properly it does increase its dynamic range. Yes you do not completely get rid of the dip in the upper mids and recessed highs. But if you have never driven them correctly how can you really tell? I did not say they had a huge sound stage I said they had a larger sound stage than certain other headphones such as the hd650. I did say the k7xx had a larger soundstage. If he was not happy with the lcd-x then he will not be happy with the 2 or the 2c as they are quite similar.