Up until about 25 years ago, the only way for amplified performers to hear a “mix” on stage, other than what was bouncing around the room acoustically from the mains, was via stage monitors. The most common of these are the “wedges” we all know – speaker cabinets with a shape designed to sit on the floor and aim at the performers. While these work very well, there are drawbacks. The newer technology of in-ear systems offer a wonderful solution but are not without tradeoffs. This article is aimed at explaining the main differences between the two approaches and where the compromises are.