Equalization is used to shape the tone of a sound, to filter out unwanted noise, to balance out a song, and to create interesting sonic textures. In an ideal world, we’d never have to touch an EQ because our mic choices, mic placements, and recording and mixing spaces would all be perfectly balanced. Since this is rarely the case, equalizers are a must-have for every sound engineer. This info-graphic was made for beginner and intermediate levels to explain how different types of EQs work and what the various controls and features do. Each of the EQs shown works a little bit differently, but they yield the same sounding results.