Sold in pairs, each PreSonus ISPD-4 isolation pad can be divided into halves and configured in several ways so you can use them with virtually any near-field studio monitors. These inexpensive foam pads isolate your speakers from their supporting surface, reducing vibration and improving clarity and midrange resolution. For small, vertically placed speakers, use half of an isolator per side or employ the full pad, whichever works best. Place two half-pads side-by-side to accommodate larger speakers or horizontal placement.