PreSonus ISPD-4 Studio Monitor Isolation Pads acoustically isolate your studio monitors from your work surface or speaker stand to prevent vibration and improve clarity. The pads come in pairs that can be split into four halves, so you can use the entire pad, use half a pad for a small speaker, or separate the two halves and use both for extra width, such as with a horizontally placed speaker. The ISPD-4s are both affordable and versatile for a variety of applicable options