Best isolation under a big receiver ?


I have found the gingko cloud to be great under my cd player, and am perfectly satisfied with it. But i have nothing under my big b&k avr307 receiver except the shelf it sits on. I know it is not as sensitive as my source, but i would still welcome your thoughts.
timtim
im using a pioneer 1250 and getting good results with a large bamboo butcher block....get those speaker cables off the ground too
I found Herbie's Tenderfeet made a nice difference under my tube integrated. If your receiver is over about 45 pounds you'll need something more heavy-duty though.
Receiver weighs 60 lbs, and my cables are already off the floor. I am a little leery of hardwood slabs due to reports of dynamics being killed.
I've been using Brightstar under my Integrated and my CD player with (IMHO) spectacular results since day one use and it is sonic improvements that you can hear!
Just picked up am AVR 307
I'm a newb, so what I'm gathering is I should put a large wooden block under this receiver and it will improve the sound along with getting the cables off the ground?