You are offerding on a vintage Symetrix Sx206 multi-compressor. This half-rack space, mono compressor has various modes: comp/limiter, expander, gate and ducking compression. It's a great sounding unit in equally great condition. This is not a "character" compressor but it definitely imparts an analog flavor on recorded tracks. It added a little something to guitar amp simulation plug-ins that was very noticeable. It's a good little unit. Includes power and manual.