Yes, you can use different types of coffee beans in Schaerer Coffee Art C. The machine has a built-in grinder that allows you to adjust the grind size according to your preference. This allows you to use different types of coffee beans, from light to dark roasts, and achieve the desired strength and flavor. It is recommended to use high-quality beans for the best results. Additionally, the machine has a bypass doser that allows you to use pre-ground coffee if desired.