Had a brief "thread discussion" with Dekay on this about a week ago and decided to try it as my CD player went out of warranty about a month ago. Go to Home Depot and buy the industrial vinyl floor tiles (3 at about 80 cents apiece). The industrial tile is much heavier and "deader" than the thinner peel and stick but requires an adhesive. Being lazy, I bought 3M outdoor reinforced carpet tape (double-sided) which is black and VERY tacky. Cut pieces and attached them to the underside of the lid of the player and the sides (except where ventilation holes were). The results-a definite improvement in bass performance-bass became more powerful and easier to follow. There was also an increase in transparency with individual instruments becoming clearer and easier to hear-vocals, particularly ends of sentences or verses where the voice "trails off" were much more easily discernable. On the whole, fuller, but also cleaner sound. Definitely worthwhile. $2.50 for the tiles $7.00 for the carpet tape. (Canadian $) My equipment is not ultra-high end so YMMV. Blake