This KLARK TEKNIK DN360 Graphic Equalizer is a reliable and high-quality unit that has been tested and confirmed to be working perfectly. It offers a frequency range of 25hz - 20khz and features XLR In and XLR Out ports, a silver color, and a 2U rack unit height. This analog equalizer has a graphical interface for easy adjustment of frequencies and is designed to enhance and amplify audio signals. It is a great addition to any pro audio equipment collection and is perfect for use in a studio or live performance setting.