Muskrat, using 160 lbs/cu ft for granite, your granite slab will weigh about 60lbs. Vibrapods are designed to support very specific weight ranges. If you intend to put them under the combined weight of the granite slab and the CD player you probably will need different vibrapods than you have now.
A cheap and effective isolation method is to put sand-filled baggies under your CD player's feet. You can get play sand at your local home improvement store for about $3-4 for 50lbs. I put 1 cup of sand in a sandwich size zip-lok baggie, squeeze the air out, seal it, then fold it over and tape it. The result is about 6"L x 3.5"W x .75"T. Looks like crap, but works well. I use these under a Meridian G08. I haven't noticed any tonality changes, unlike many vibration control devices. The primary effect is a little better low-level resolution and more soundstage depth. Try it, you may like it. Thanks to Jon Risch for the idea.
A cheap and effective isolation method is to put sand-filled baggies under your CD player's feet. You can get play sand at your local home improvement store for about $3-4 for 50lbs. I put 1 cup of sand in a sandwich size zip-lok baggie, squeeze the air out, seal it, then fold it over and tape it. The result is about 6"L x 3.5"W x .75"T. Looks like crap, but works well. I use these under a Meridian G08. I haven't noticed any tonality changes, unlike many vibration control devices. The primary effect is a little better low-level resolution and more soundstage depth. Try it, you may like it. Thanks to Jon Risch for the idea.