lmaooo. dont believe it the bottom of the krk rp8 are made of the same material the rest of the top or side of the monitor is made of.
i have mo pads under them and they position the monitors better and even when they are being playing loud they dont vibrate the desk one bit nor have they even moved from the position i set them in over 6 months ago.
sound quaity is also a bit less muddier and cleaner
there worth the 40 bucks.
also keep in mind if you havent bought the rp8s yet they have new mackies out that are much powerful supposedley a better set of monitors n ther the same price as the rp8s.
make sure you kno if the monitors are too powerful for your room or not that makes a difference