Thank you for viewing. This is a Focusrite Liquid Channel. I am selling one of the two units I own. It features modeling of dozens of microphone preamps and compressors in a single unit, allowing you to change the sound to match your music or the instrument you are playing. In particular, the modeling of the Millennia HV-3D is, like the original, a superb achievement, with a high ceiling. There are scratches and dirt commensurate with its age, but it works well without any noticeable crackling.