The Braun KF600 Impressions coffee maker uses a gold-tone permanent filter that is a replacement for #4 size cone paper filters. Paper filters can be used in place of the gold-tone filter, but they do not produce the same high-quality taste.
The gold-tone filter is easy to remove and can be filled directly on the counter top, which helps to eliminate messes. The water filter prevents scale buildup and helps to reduce impurities, such as chlorine, that can make the coffee taste bad.
Replacement gold-tone filters can be purchased at Amazon.com or at any number of retailers. In addition to the coffee filter, this appliance comes with a Brita water filter.