ARGOSY Spire Speaker Stands feature patented IsoAcoustics monitor isolation technology for the ultimate blend of monitor support. This beautiful stand is made with 5/4" powder-coated substrate to provide a safe, sturdy, and resilient solution to isolate your studio monitor. It features beveled edges and a stunning look to enhance the feel of your studio. The isolators are designed to keep all movement on-axis...to move in the direction of the speaker cone's travel, while resisting movement in other directions. Place your larger-sized monitor on the 420xi and you will notice a definite tightening of the low end and improved stereo imaging of your existing speakers.