I have stillpoints products under all my components. I don't know what your budget is, but stillpoints cones and risers in comination with their component stands worked wonders under my CD player and preamp. I also found the component stands to very effective under my speakers. The cones and risers by themselves definitely produce benefits, but the combination of cones and risers with component stands was highly synergistic.
Stillpoints
Which devices benefit more from the stillpoints? cd-players, power amplidiers, loudspeakers, tube-, solidstate?