Automatic Compressor/Limiter MDX 402, professional equipment with adjustable Threshold, Auto, and Ratio. Made in Germany by Behringer, unlike the current Chinese-made versions, the sound is not flashy. Once you set the Threshold and Ratio curves, the Attack and Release are automatic: On for slower types like vocals, and Off for faster types. Low noise, natural effect, and a straightforward, easy-to-use compressor/limiter. Easy setup, an essential item for home recording. - Model: MDX 402 - Type: Automatic Compressor/Limiter - Controls: Threshold, Auto, Ratio - Input/Output Terminals: IN, OUT, Sidechain No claims and no returns accepted. Thank you for viewing.