The AT-4000 Series Attenuators are designed to be ergonomic with a big-sized control knob to provide a comfortable grip and excellent control with every turn. Finished in gloss white the series comes in input capacity ratings of 12 30 60 and 120 watts which are compliant for most installation types or professional applications. A clip-on face plate also means easy installation and clean overall look with no visibility of screws on the surface to ruin the visual aspect of the interior space.