Behringer - Pro-XL MDX1600 Stereo compressor

The Behringer Pro XL MDX1600 is a versatile two-channel dynamic audio processor compressor/limiter for professional studio and live sound. The device helps to tame volume peaks and make soft sounds more intelligible, which is ideal for vocals or instruments. What is unique about this model is the Dynamic Enhancer, which prevents the sound from becoming dull or muffled under heavy compression. It also features Interactive Knee Adaptation (IKA) for smooth compression and a separate peak limiter to effectively protect your connected equipment or speakers from clipping.

The Behringer works perfectly.
For a better impression, see photos