Front-panel knobs provide active equalization, each controlling a separate audio band. These bands were carefully selected to yield a module that works effectively in a wide variety of systems. Each band"s center frequency can be either boosted or attenuated by at least 12 dB. The Q of the low and high band equalizers was selected so that those controls can be functionally considered as a total bass band or treble band control. The RU-EQ3 adds a third control. * This midrange control is optimized to voice band adjustment, with the overlap tailored to provide smooth operation for wideband music applications. The RU-EQ3"s OVERLOAD indicator flashes if either the input or output stage clips. * Features:3-Band Audio Equalizer.Custom Tailored Audio Bandwidth.User-Accessible Adjustments.High-Density Rack-Mount Convenience.Low-Noise, Low-Distortion EqualizerThis midrange control is optimized to voice band adjustment, with the overlap tailored to provide smooth operation for wideband music applications. The RU-EQ3"s OVERLOAD indicator flashes if either the input or output stage clips.