Is it idiotic to stack an amp and tuner directly on top of a CD player?

Would it be idiotic to place a very heavy and solid Electrocompaniet CD player directly underneath a heavy vintage Accuphase integrated amp and tuner? Would the vibrations degrade the CD player performance, or would the weight mitigate that issue to a large extent?

The amp runs quite warm, so I'd rather it be on top.

Also, if it is an obvious mistake, are there any stand-alone isolation shelves, or other work-arounds, that would look nice, and wouldn't cost a small fortune?

Thanks for your input!

Tony