I too was intrigued by the CAD grounding devise, with the exception of the price, which got me thinking. I use a few High Fidelity products, the MC-0.5 plugs into an unused outlet and "conditions" the sound. Since I have been experimenting with magnets, I tried doing the same thing on an unused input using (4) 1/2"x1.25" N52 cylinder type magnets. I took a cheap rca IC, cut the ends of one end, leaving one hot, one neutral wire for the right input and one hot one neutral for the left input. I attached the magnets (4) to each wire (totaling four wires) and plugged it in to an unused input, and was somewhat astounded by the improvement in sound.