Placed on top and in the middle of MartinLogan curved electrostatic panels (13a), the physical boundaries of the sound disappear. The height, width, and depth of the soundstage become extended, like nothing I have come close to achieving before. The Blue Diamonds are sensitive to vibration control, so experiment with quality support underneath them. (I also placed a strip of clear packing tape on the top rim of the speaker, under the BD. ). I am not using these in conjunction with any other Stein products. Blue Diamonds simply must be experienced, to be believed…