I have used black diamond racing cones MKIII with very good effect ,tighteng up the low end more focus else where,then as my system was upgraded in several areas I found an unnatural hardening in the sound in that set up.Now I am using a $3, 12" bicycle tube with a corion shelf on top, best results with pre on it's original feet.This works well for tube pre but the best yet is SOLID TECH'S SILENT FEET under the CD player (could be used for pre as well but with diminishing cost/effect returns),look for major increases (all good)with this set up .oh ya all this is best on a cement foor.
