KAB sells the sorbothane boots ($54) that go underneath the Isonoe. I bought the Isonoe feet, put the table in the wood 'box' and then put the sorbothane boots under the wood. If you don't want to buy the Isonoe feet, you can use your original feet in the 'box' and place the sorbothane underneath. It's a cheap solution. Frankly I don't know how well it works for sound because I left the country before I could listen.
For an even cheaper solution you can use the Isonode rubber pucks under the box for $24 - sold here w/ money back guarantee. Never tried them.
For an even cheaper solution you can use the Isonode rubber pucks under the box for $24 - sold here w/ money back guarantee. Never tried them.