Electro-Voice 2230 is a single-channel 1/3 octave graphic equalizer with 27 bands of equalization. It can provide up to 12 dB of boost or cut at each frequency, allowing for precise control over the sound of your audio. The combining filter action of the 2230 results in a smooth phase and frequency response, making it ideal for use in both live sound and recording applications.

The 2230 also features a number of other useful features, including a built-in high-pass filter, a low-pass filter, and a peak-stretching LED clipping indicator. The high-pass filter can be used to remove unwanted low frequencies, such as rumble or stage noise, while the low-pass filter can be used to eliminate excessive high frequencies, such as hiss. The peak-stretching LED clipping indicator helps to prevent distortion by providing a visual indication of when the signal is reaching its maximum level.