Same thing, less money but no money back guarantee:
http://buy.audiogon.com/cgia/cls.pl?accstwek&1205867259
That same idea, is used in HVAC units for vibration mounts. A buddy of mine gave me a box of 50 for free some time ago. I'll email him and ask about more information, but they are cheap.
Mark
I would be very careful with these. I bought several Wagner HVAC pads, as they look to be the exact same material as the Mapleshade Isolbocs. I have experimented with full size 4 inch pads, and ones that are cut down to be the same size as the Mapleshade. I never could get them to work well in my system. I tried them under transports, DAC, power amps, and what not. Even Did my own iso-platforms with them. In my system they consistently resulted in a pronounced midrange and smeared bass response. Finally gave up on them.
Personally if you have the shelf room I would build a small shelf that would stand over one component and rest on the shelf rack. Probably put the power amp above the pre. Either that or put the pre on a botton shelf, and use an amp stand for the power amp, or some other component that gets used only occasionally.
Regards
Mister Pig
