Tube Saturator Vintage is a free reissue of the original Tube Saturator. It uses circuit simulation technology to faithfully reproduce the sound of a dual triode preamp. While it sounds great, the circuit simulation technology is very CPU intensive, that’s why we developed its successor, Tube Saturator 2. Tube Saturator 2 is vastly more efficient, nearly identical in simulation accuracy, and adds other features. However, some users prefer the sound of the original and request it, hence we have released it as a free plug.