Yes, you can use pre-ground coffee with our coffee makers. However, for better results, we strongly encourage you to invest in a burr grinder, buy whole bean coffee and grind enough just for each cup.
Ideal grind settings will vary for different coffee makers, coffee blends and origins, and roast levels. For example, darker roasts may require a coarser grind setting than lighter roasts.There is also no universally accepted grind setting for any particular coffee maker. You may buy your coffee pre-ground for espresso, but not all espresso machines are alike. What may work well in one espresso machine may be terrible in another.
Pre-ground coffee also stales much more quickly than whole bean coffee. Stale coffee smells and tastes bland.