Update on the feet. I tried everywhere to get some more of these sponges. They are made by Newtons but to buy them of the net they are over £4 each so might as well get some Isonodes for that. The wife came to the rescue and found some proper Pumice stone blocks at the Pound Shop 3 for a £1. This is the substance i think mentioned on TNT. Now i have them under my cd and amp and the bass has increased now i need to re-equalize my Behringer DEQ2496. Mid range improvement too and better separation. I am well pleased for a measly £3. Perhaps they wont replace other peoples Isonodes etc etc but if you are just using your cd and amps fixed feet give em a try, i placed them directly under mine. Broke one and i did find a use for it. Good for getting the hard skin of me toes. Jim.