Electro-Voice 2202 is a professional-grade graphic equalizer designed to enhance the sound quality of your audio system. With 10 slide controls, each governing a specific frequency band, you can fine-tune your audio to perfection. The ±15dB boost/cut range provides ample flexibility for shaping your sound, while the narrowband EQ allows for precise adjustments. Additionally, the EQ In/Out switches let you bypass the equalization circuitry when desired, giving you the option of comparing the original and processed signals.