The Virus TI series was first released in 2005 and is a part of the Access Virus virtual analog synthesizer product line, made by the German manufacturer Access Music since 1997. The Virus TI Polar is a 37-key model.
In November 2005, the Virus TI series was released, including the 61-key Virus TI Keyboard and the 37-key Virus TI Polar. A small desktop model was released in February 2008 called the Virus TI Snow. A revision of the TI series called TI2 came out in March 2009, featuring faster digital signal processing (DSP), greater polyphony, more effects in the effect section and a slightly changed design.