Mixbus 32C is a separate product from Mixbus and is purchased and licensed separately. It is possible to have both installed on your computer at the same time.
Mixbus 32C is the premium version of Mixbus. While it retains all of the superior features of Mixbus it adds an important difference: the channel signal path models the analog circuitry of our classic 32 Series console from 1975. It also adds additional mixing buses and has a more advanced channel EQ which is a model of the EQ circuit in the original analogue console.