A graphic EQ, or graphic equalizer, is an audio processing tool that allows users to adjust the frequency response of sound. It features multiple sliders, each corresponding to a specific frequency band, enabling precise control over the audio output. This helps enhance or reduce certain frequencies, improving the overall sound quality in various environments. Graphic EQs are commonly used in live sound systems, recording studios, and home audio setups. By visually representing the frequency spectrum, they make it easier for users to identify and modify specific sound characteristics, ensuring a balanced and pleasing audio experience.