The benefits of using a turntable sandbox to control vibration have been well documented. I fabricate these from 3/4" solid bamboo plywood with a plastic laminate faced MDF floating platform. They are finished with a penetrating oil and a conversion varnish topcoat. When filled with 40-50 lbs of playground sand (supplied by you) and placed on vibration control feet, the turntable is well isolated and the results are sonically very neutral, helping produce tight bass and clear, clean highs. Standard size is 20-3/4" x 16-3/4" x 3-7/8" overall, which accommodates most turntables. Dimensions can be modified as necessary. The price is $195 + shipping. Feet not included.