Samson s-com4  4 channel compressor rack unit

TheS-com 4 is a compact and versatile single-rack space device that provides four channels of high-quality dynamic processing with an Expander/Gate and Compressor/Limiter on each channel. The four channels operate independently or in stereo pairs.

4-Channel Compressor / Expander / Gate 2 x Linkable units, Balanced XLR output and jack, Individual threshold and ratio for each channel, Format: 1U