cut up a dowel rod [25mm] into 10-15mm slices ...drill a 8mm dia hole in the centre of one face, 2-3mm deep. Then line with a tiny bit of blutac and place a 10mm ish ball bearing in the cavity an press in the bluetac. make three and place under your cdp etc .... two at the front and one to the rear. could be an eye opener.... On the three systems I've tried this the tonal balance remains unchanged ..but the image focus is improved greatly....though the results will obviously be different with your own kit combinations. [all units were on dedicated hifi stands]