White Instruments 4828 28-Band 1/3-Octave Graphic Equalizer
The Model 4828 is a 28-band, R-C active graphic equalizer featuring a level control with up to 20dB gain; EQ in/out switch; adjustable high and low-pass filters; and 7 LED bar graph headroom indicator. The filter controls are 60mm slide faders with center detents and dust shields.