Behringer MDX2200 Composer Pro Audio Interactive Dynamics Processor Powers Up. Condition is "Used". Shipped with USPS Priority Mail. The Composer Pro MDX2200 is a modest 1U rackmounting unit measuring a minuscule 190mm front to back. The front panel is polished aluminium with white‑on‑black screen printing and the controls are laid out in a very clear and logical manner. With the exception of the large power button, all function switches are illuminated, and each channel sports its own input/output level bargraph meter as well as a gain‑reduction meter and traffic‑light threshold indicators for each of the separate dynamics sections.