Otherwise know as the pillow headphones, these were the most comfortable headphones available on the market with very nice audio quality and priced SO reasonably. They used to retail for xb300 49$ xb500 79$ xb700 $139 and xb1000 is unsure. Now you cannot buy a pair unless you are willing to dish out 750$ Sony has got rid of them from there product line and has left thousands of consumers disheartened!