We developed the Ultimate Ears 1 Pro Custom Stage Single Sided Monitor specifically for performing artists who desire significant stage bleed while performing. It’s the ideal solution for when you’re performing harmonies and acoustic sets or for playing small venues and special events when it is imperative to hear the stage and crowd noise. For this application, the Ultimate Ears 1 Pro Custom Stage Monitor is much more convenient and comfortable than a full set of in-ear monitors. They deliver the distinctive Ultimate Ears sound signature you expect with evenly balanced frequency response, and the best possible clarity and detail.