Behringer Composer Pro-XL MDX2600 V2COMPOSER PRO XL MDX2600 V2 The reference class MDX2600 is a marvelous dual channel Expander Gate Compressor Peak Limiter that is ideal for: compressing mono stereo signals and providing virtually inaudible noise suppression, without loss of high frequencies; increasing vocal presence and energy; and limiting, or smoothing out extremely high signal peaks. Additionally, the MDX2600 features an integrated Dynamic Enhancer, De Esser, Low Contour filter