I can tell I'm going to like this place already:
http://www.head-case.org/forums/headphones/5189-does-anyone-try-la5000-la7000.html
I learned all about modifying factory items with Cars... Rarely do individuals know more than multi-million dollar company which hires experts to produce a high quality product and any improvements generally come with some sort of detriment to the total body of the product.