Coffee brewing devices like AeroPress or Chemex impact the taste and quality of coffee by allowing for more control over the brewing process. These devices determine factors such as water temperature, brewing time, and extraction method, which can influence the flavor profile of the coffee. AeroPress typically produces a richer, bolder cup with a smooth finish, while Chemex is known for producing a cleaner, more delicate cup with distinct flavor notes. Ultimately, the choice of brewing device can significantly impact the taste and quality of the coffee based on personal preferences and desired flavor characteristics.