FOH stands for Front of House, which is the part of a performance venue that is open to the public. In concert and PA applications, FOH is generically used to describe anything in the audience area. Specifically, the main, or house mixing position is referred to as the FOH position, which is meant to differentiate the main house mixer from the monitor mixer normally located to the side of the stage. The FOH engineer, also known as the band engineer or soundman/soundwoman, is responsible for mixing the sound for the audience at a concert. They manipulate the levels and equalization of the various instruments and vocals, blend them together, add reverb and effects as needed, and produce a mix of the band that is amplified through the PA system. FOH engineers are positioned in a small sectioned-off area front-of-house, surrounded by the audience or at the edge of the audience area, where they have an unobstructed listening and a clear view of the performance, enabling the operation of the main speaker system, show control consoles, and other equipment.