The Multicom Pro-XL MDX-4600V2 from Behringer is a 4-channel expander, gate, compressor, and peak limiter for processing mono and stereo signals. Use the gate to filter out unwanted noise, the expander to increase the dynamic range of the signal, or the compressor/limiter to decrease the dynamic range and smooth out any loud signal peaks. Add signal enrichment with the dynamic enhancer and low-contour filter. The MDX-4600V2 is housed in a single space rack-mount chassis and is applicable in recording, mixing, and mastering sessions.